Showing Results for High Blood Pressure
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Coconut Oil and Medium Chain Triglycerides (MCT) Oil Review – Semi-Solid and Liquid Oils & Supplements
Black Currant Oil, Borage Oil, Evening Primrose Oil, Flaxseed Oil, and Hemp Oil Supplements Review: Sources of ALA and GLA (Omega-3 and -6 Fatty Acids)
CL Answers (145)
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Which supplements can help to lower blood pressure?
Supplements to lower blood pressure, including CoQ10, vitamin C, fish oil, and olive oil, are all explored to find out what works.
A tea called Throat Coat made me lethargic and I was found to have low potassium. Is this a known problem? I was drinking 5 cups a day.
Throat Coat tea information, including licorice root content, potassium loss, and symptoms such as lethargy, increased blood pressure and fluid retention. ConsumerLab.com's answer explains.
I have low blood pressure. Are there any supplements I should avoid?
Find out which supplements can cause decreases in blood pressure, including melatonin, arginine, magnesium, and calcium.
What is Noopept? Can it really improve memory and cognition, and is it safe?
Learn more about Noopept, including results from clinical studies on cognition, safety, and dosage.
Is it better to use a powdered product that you mix with liquid than to take a pill? I was told that the vitamins will be more completely absorbed. Is that true?
Learn more about taking supplements & multivitamins in powder or tablet form, including tips on how to get the most from your supplement.
How do I find the best quality olive oil and what are the health benefits?
Health Benefits of olive oil, including heart benefits, anti-inflammatory effects. Plus, how to choose a quality olive oil and cook with olive oil
Can beetroot juice or supplements help lower my blood pressure?
Learn more about beetroot juice and beetroot supplements and if beetroot can really help lower blood pressure.
Are there negative interactions between the following supplements and 60 mg of beta-sitosterol with dinner: Vitamin C (500 mg), CoQ10, grape seed extract, fish oil, vitamin D3/calcium/magnesium/zinc?
Learn about drug interactions & proper dosages for supplements such as CoQ10, vitamin D & C, fish oil, magnesium, zinc and grape seed extract.
I'm worried that I'm not getting enough potassium, but potassium supplements only provide a small dose -- much less than the daily requirement. Why is this, and how can increase my daily intake?
Find out why many potassium supplements contain small doses of potassium and how to get adequate potassium from food and supplements.
Can vitamins or other supplements cause a change in the ability to taste, or even a loss of taste?
Find out if supplements or vitamin deficiencies can cause changes in taste, loss of taste or smell. Information about vitamin D, zinc, vitamins A, B6, B12 and others. Plus medications and medical conditions that can alter taste and smell. ConsumerLab.com's answer explains.
Does coconut water help re-hydrate as well as sports drinks?
Find out how coconut water compares to sports drinks, including rehydration and possible side effects.
Is it better to take fish oil, flaxseed oil -- or both?
Fish oil and flaxseed oil -- how they are different, what they are used for, if and how they can help with arthritis, depression, lowering cholesterol & more.
I was told I have a MTHFR gene mutation. Do I need to take methylated forms of B vitamins, such as methylfolate and methylcobalamin?
MTHFR gene mutation can impact B vitamin bioavailability. Learn more about this and which deficiencies are more likely to occur.
Are there any supplements I should avoid when taking acetaminophen (Tylenol)?
Find out if there are any supplements that should be avoided when taking acetaminophen (Tylenol).
I take lisinopril (Zestril), an ACE inhibitor drug to lower blood pressure. Are there supplements I should avoid, or be taking, due to this drug?
When taking ACE inhibitors, find out which supplements should be avoided. Interaction info on Lisinopril or another ACE inhibitors.
What are the health benefits of tart cherry juice?
See the evidence for tart cherry juice health benefits from clinical studies. Find out if tart cherry has anti-inflammatory effects, if it can improve sleep, lower high blood pressure, or help for muscle pain and osteoarthritis.
What is GABA (gamma-aminobutyric acid)? Is it beneficial for stress, anxiety, insomnia or other conditions, and is it safe?
Find out about GABA (gamma-aminobutyric acid), including if it's beneficial for insomnia, epilepsy, stress and anxiety, high blood pressure and building muscle, and learn if taking GABA supplements is safe.
Which supplements reduce the risk of stroke? Which increase the risk of stroke?
Find out which supplements (may help reduce the risk of stroke/might increase the risk of stroke.)
Is it true that eating Brazil nuts can help with weight loss? Are there other health benefits or risks of Brazil nuts
Learn more about vitamin E intake from nuts, including Brazil nuts, hazelnuts, and almonds.
Can prenatal vitamins have too much folic acid? Mine has 800 mcg, but isn't that more than what's recommended? Is this dangerous to me or my baby?
Is it possible for prenatal vitamins to have too much folic acid? Find out the correct dosage so that it is not dangerous to babies.
What is hesperidin, what is it used for and is it safe?
Learn about hesperidin, including whether its beneficial for heart health, problems with circulation, stroke, cognitive function, depression, cancer and other conditions, and find out if it is safe.
Which oils can help lower my cholesterol and risk of heart attack? How are coconut oil, olive oil, and fish oil for example?
Find out which fats and oils, such as coconut oil and fish oil, lower cholesterol and lower the risk of cardiovascular disease.
I'm interested in using Himalayan salt. What are the health benefits with it and other specialty salts? Are there contaminants in these salts?
Himalayan salt health benefits, along with other gourmet salts like Hawaiian and Mediterranean. Info including what's in them and their safety.
What are the health benefits of stevia? Is it safe?
Learn more about the health benefits of stevia and whether it is safe. ConsumerLab.com's answer explains.
Which supplements or foods can help lower cholesterol and keep my heart healthy? Are there any to avoid?
Information about heart health supplements & vitamins that help with cholesterol, including sterol esters, CoQ10, and vitamin D, and which may be bad for the heart, like calcium.
Can CBD cause a drop in blood pressure?
Find out if CBD (cannabidiol) can lower blood pressure or affect heart rate, plus information about other CBD side effects, drug interactions and safety concerns. ConsumerLab.com's answer explains.
What are the health benefits of black cumin seed (black seed) oil?
Find out if black seed oil has health benefits, such as lowering blood pressure or cholesterol, asthma, weight loss, and others. Dosage, forms, including black seed oil and black seed powder, safety information, using black seed oil in foods and more. ConsumerLab.com's answer explains.
What are the health benefits of olive leaf extract?
Olive leaf extract is promoted to help lower blood pressure and cholesterol levels, lower blood sugar levels and improve insulin function, reduce joint pain, and other uses. Find out if it really works, see the clinical evidence, and learn about side effects and drug interactions with olive extract.
What are the health benefits of amla and is it safe?
Learn about amla (Indian gooseberry), including its potential health benefits and possible safety concerns.
Do any supplements or foods help with brain function, like memory and cognition?
Find out which supplements help improve memory, brain function and cognition, including fish oil, some B vitamins, cocoa, and curcumin. ConsumerLab's answer explains the evidence for supplements promoted to help with brain function and cognition.
What are the health benefits of green tea, and is it safe?
ConsumerLab explains green tea's potential health benefits for everything from fighting cancer to helping your heart.
Do any supplements, foods, or oils help reduce muscle pain, muscle cramps, or nighttime leg cramps?
Find out which supplements, and topical products such as magnesium creams, can help reduce muscle pain, leg cramps, and nighttime leg cramps, and which may worsen muscle cramps. Also, learn about vitamin and mineral deficiencies and common medications that can cause muscle cramps and nocturnal leg cramps.
How do I choose the best magnesium supplement?
Choosing the best form of magnesium supplements can be tricky due to the many different types (magnesium aspartate, bicarbonate, carbonate, chloride, citrate and others).
I'm taking Lumiday, a supplement to improve mood. It seems to help me but is it safe?
Lumiday info including side effects, drug interactions and reviews. Lumiday is a supplement marketed to improve mood.
Do "lite" salts and salt substitutes containing potassium help lower blood pressure and reduce heart risks? Are they safe?
Find out if replacing regular salt with "lite" salt or salt substitutes, such as Morton Lite Salt, Morton Salt Substitute, NoSalt Original Sodium Free Salt Alternative, and MySalt, helps to reduce blood pressure, or decrease the risk of heart attack and stroke. Plus, learn about the safety and side effects associated with salt substitutes, drug interactions, and more.
What is hydrogen water? Is it beneficial for alertness, athletic performance, arthritis or other conditions, and is it safe?
Find out if hydrogen water has benefits with regard to alertness, side effects of radiotherapy in cancer patients, metabolic syndrome, athletic performance, rheumatoid arthritis, liver disease, and other conditions, and learn if it is safe to use.
Do any supplements help for restless legs syndrome?
Find out whether supplements or vitamins like iron, magnesium, vitamin E and others can help for restless leg syndrome (RLS). ConsumerLab.com's answer explains.
How does regular black pepper compare with black pepper extract used in supplements? Will sprinkling it on food with turmeric help increase the bioavailability of curcumin compounds from turmeric?
Find out how black pepper extract in supplements compares with regular black pepper added to foods with turmeric.
Does drinking coffee increase or decrease the risk of cancer? Can it slow cancer progression?
Learn more about coffee, its safety, if it's good for you, and if it impacts your risk of cancer.
Do any supplements help with the coronavirus (COVID-19)? Do supplements like vitamin D, zinc, vitamin C, or herbals work?
Find out if natural remedies & supplements for coronavirus such as zinc, vitamin C, garlic, or elderberry help to prevent or treat COVID-19.
How to Reduce Lightheadedness and Dizziness When Standing Up (Orthostatic Hypotension)
Learn about movements that can reduce lightheadedness and dizziness that can occur from a drop in blood pressure upon standing (initial orthostatic hypotension). Plus find out if supplements such as vitamin D and CoQ10 may help.
How much magnesium do I need and how much magnesium from supplements is too much?
Find out how much magnesium you should be getting on a daily basis, signs of magnesium deficiency, and how much magnesium is too much, particularly from magnesium supplements and laxatives containing magnesium. Find out the side effects and potential adverse effects of too much magnesium.
When taking a statin drug like Lipitor or Crestor, are there supplements I should avoid or take?
Learn about the interactions between certain supplements and atorvastatin (Lipitor), rosuvastatin (Crestor), and other cholesterol-lowering statins.
What is lunasin and does it really reduce cholesterol?
Lunasin supplement information, whether lunasin can lower cholesterol, safety and side effects, foods that contain lunasin, like soy.
Does Carditone work to lower blood pressure?
Carditone information, including safety and side effects, whether Carditone has been shown to work for blood pressure and angina, and more.
Is Theracurmin better absorbed than other curcumin formulas - and can it really help lower my blood pressure?
Theracurmin information. Find out if Theracurmin's nanoparticle curcumin formula is better than other types of curcumin.
What Is Marine-D3 and does it live up to anti-aging claims?
Learn more about Marine-D3, a supplement from Marine Essentials, including evidence from clinical studies on aging.
I take omeprazole (Prilosec), a proton pump inhibitor, to reduce stomach acid. Are there supplements I should avoid, or be taking, due to this drug?
Supplement interactions with proton pump inhibitor (PPI) drugs like omeprazole (Prilosec) and Nexium.
What is graviola? Can it really help fight cancer?
Learn more about graviola, if it can really help fight cancer, and its safety.
What are the benefits of grape seed extract?
Learn about the health benefits of grape seed extract, and find out it improves venous insufficiency, leg swelling, swelling after surgery, or can help to lower blood pressure.
Is canola oil good or bad for you? I heard it can be toxic.
Find out if canola oil is bad for you or good for you, and whether it helps heart health. Clinical evidence and how it compares to other oils.
How Should You Take Care of Yourself After You’ve Had COVID-19?
Find out the best way to care for yourself when recovering from COVID-19, including how long you should quarantine, whether you should get vaccinated, when it is safe to undergo a surgery, and how to spot and, possibly, improve lingering symptoms.
Can beetroot juice improve my workout performance?
Find out if beetroot juice can help improve exercise endurance or performance, how it works, the clinical evidence, and cautions.. ConsumerLab.com's answer explains.
How do the Pfizer, Moderna and Johnson & Johnson COVID-19 vaccines compare in terms of efficacy, safety and side effects? How, when and where do I get the COVID-19 vaccine?
Find out how the COVID-19 vaccines from Pfizer and Moderna compare and learn how when and where you can get the COVID-19 vaccine.
Is kratom too dangerous to use?
Find out if kratom is safe/legal to use, including potential adverse effects, such as agitation, rapid heartbeat, nausea, drowsiness, seizures. ConsumerLab.com's answer explains.
I've heard that grapefruit juice can interact with medications because it inhibits an enzyme that breaks down drugs in the body. Do any supplements interact the same way with drugs?
CYP3A4 inhibitors, such as grapefruit, can interact with certain medications by inhibiting the liver enzyme that metabolizes many drugs. ConsumerLab.com's answer explains.
Which supplements make acid reflux worse? I take many and think some are causing heartburn. Are there any supplements that help treat acid reflux?
Find out which supplements can cause or worsen acid reflux, nausea and GERD, including vitamin B6, arginine, and CoQ10.
Can taking NAC (N-acetylcysteine) interfere with blood tests?
Find out if NAC (N-acetylcysteine) can interfere with laboratory and blood tests, such as blood tests for cholesterol. ConsumerLab.com's answer explains.
My HDL (good) cholesterol level is low. Should I take niacin to raise my HDLs?
Learn more about niacin and find out if it can raise HDL ("good") cholesterol levels.
Is drinking coffee good or bad for heart health?
Learn more about coffee and caffeine, its safety, if it's good for you, how much coffee is too much and its impact on your heart.
I have been having dizziness for the past few months and am wondering if it could be a side effect of supplements I take. Which supplements cause dizziness?
Find out which supplements that may cause dizziness, vertigo, or imbalance, including garlic, melatonin, saw palmetto, and red yeast rice.
Rhodiola and ashwagandha are both promoted to help with stress and anxiety. Is it safe to take them at the same time?
Find out if it is safe to take ashwagandha and rhodiola together. Both herbs are promoted to help with stress and anxiety, but may also lower blood pressure and have other side effects. ConsumerLab.com's answer explains.
I take melatonin to help me fall asleep. Are there any drugs that interact with melatonin that I should be aware of ?
Melatonin interactions with drugs, including blood pressure medications, Xanax, Ambien, antidepressants, caffeine and more.
What are the side effects of melatonin supplements?
Melatonin side effects - are there any? Read about drowsiness, dizziness, headache, nausea, mood & behavior, the risk of fractures and others. ConsumerLab.com's answer explains.
Which is the best pulse oximeter for home use?
Best pulse oximeter for home use (COVID-19, asthma and COPD). Differences between home use and FDA-approved medical pulse oximeters.
What are the side effects of magnesium supplements?
Info on magnesium supplement side effects, such as stomach upset, nausea and diarrhea. Learn about magnesium dosage, safety and drug interactions. ConsumerLab.com answer explains.
I take levothyroxine (Synthroid), a thyroid hormone to treat hypothyroidism. Are there supplements I should avoid, or be taking, due to this drug?
Is taking certain supplements and hypothyroidism medications bad? Learn which supplements can interact with thyroid hormone medications like levothyroxine (Synthroid), thyroid hormone levels, and laboratory tests.
Are There Supplements That Help Treat POTS (Postural Orthostatic Tachycardia Syndrome)?
Find out which supplements and lifestyle changes may be helpful for people with Postural Orthostatic Tachycardia Syndrome (POTS).
Can supplements help me lose weight?
Learn more about weight loss supplements, including our lab test results and product comparisons.
What are the health benefits of serrapeptase?
Serrapeptase is a proteolytic enzyme. Learn more about its health effects, including whether evidence supports its use for pain, inflammation, and heart health.
Which supplements and foods can help lower or control my blood sugar?
Find out which supplements can help lower or control blood sugar. Supplements including turmeric/curcumin, fiber, cinnamon, and ginseng are believed to help lower blood sugar.
Can taking too much fish oil be dangerous?
Find out if too much fish oil can be dangerous, and if taking too much fish oil can cause effects such as suppressing the immune system, thinning the blood (increasing the risk of bleeding), increasing levels of LDL cholesterol and liver enzymes or increasing the frequency in episodes atrial fibrillation. ConsumerLab.com's answer explains.
Which supplements can help treat anemia? Can any supplements cause a low red blood cell count?
Find out which vitamin and nutrient supplements can help prevent and treat anemia in people who are nutrient deficient and learn which supplements may cause low bleed cell counts, especially when used in excess.
Is it true that some vitamins or supplements can cause cancer?
Learn more about the effects of certain vitamins and supplements on cancer, including beta-carotene, vitamins E and B9, and multivitamins.
Is it safe to consume fish oil as a long-term food supplement?
Learn more about fish oil supplement safety including long-term use, side effects, and more.
Are L-carnosine supplements helpful and safe?
Learn about the potential health benefits of L-carnosine, as well as possible safety concerns, drug interactions and cost.
What supplements should I stop taking before surgery?
Info on which supplements to avoid before surgery due to increased risk of bleeding or interference with anesthesia.
I've read that magnesium deficiency is rare but also that most people don't get enough magnesium. How can these both be true?
Learn how common magnesium deficiency is, and why, even if you are not deficient, you may still benefit from getting more magnesium. ConsumerLab.com's answer explains.
Is it safe to take arginine, or other supplements for sexual enhancement, while taking Viagra or Cialis?
When taking Cialis or Viagra, is it safe to take arginine or other sexual enhancement supplements?
What are the side effects of glucosamine and chondroitin?
Learn the side effects of glucosamine and chondroitin supplements for joint health and joint pain, including stomach upset, headache, and many others. ConsumerLab.com's answer explains.
Does glucosamine raise "bad" LDL cholesterol?
Learn more about the link between glucosamine and cholesterol, including evidence from clinical studies.
Is quercetin helpful for a specific condition? I see it as an ingredient in several different types of supplements.
Learn more about quercetin, including the benefits of quercetin and other evidence from clinical studies on prostatitis and memory.
Is there a danger in taking lecithin or phosphatidylcholine? I heard that they may increase the risk of heart attacks.
Lecithin, phosphatidylcholine and choline - Learn more about the potential link between them and cardiovascular disease.
What are the side effects of ashwagandha supplements?
Learn about the safety and side effects of ashwagandha supplements, including headache, sleepiness, upset stomach, blood pressure and more. ConsumerLab.com's answer explains.
Does Gynostemma pentaphyllum really work as an AMPK activator and help for diabetes, high cholesterol, or weight loss?
Find out if Gynostemma pentaphyllum ( jiaogulan) works as an AMPK activator and helps to lower blood sugar and treat diabetes. ConsumerLab.com's answer explains.
What are the health benefits of manuka honey, and is it safe?
Manuka honey health benefits, how it differs from common, store-bought honey, safety, evidence for using manuka honey for wounds, sore throat and cough, constipation and more.
Do any supplements or foods help with migraine? Do any trigger migraine?
Find out if supplements such as magnesium, CoQ10, riboflavin, butterbur, feverfew and others help with migraine. Also learn about foods that may trigger migraine, including chocolate and watermelon.
What is Brain Bright and can it really improve memory or cognition?
Learn more about BrainBright, including clinical studies on memory and cognition, safety, and cost.
What are the best supplements for insomnia? Are there any supplements that interfere with sleep?
Find out which vitamins may help you sleep and learn if any vitamins or supplements can cause insomnia.
Does Alpha Brain really improve memory, focus and cognition?
Find out if Alpha Brain really improves memory, focus and cognition. See the clinical evidence and get details about Alpha Brain ingredients, as well as potential side effects and drug interactions. ConsumerLab.com's answer explains.
I'm considering taking vitamin K for my bones, but I take blood thinner (anticoagulant) medication. Is there a problem taking both?
Learn more about vitamin K, including info on interactions with blood thinners such as Coumadin and Jantoven, its effects on bones & impact on clotting.
Is it possible to take too much vitamin C?
Find out the daily value of vitamin C, along with possible side effects of excessive vitamin C intake. ConsumerLab explores the topic of proper vitamin C supplement usage, and why taking too much can be harmful.
What are sugar alcohols and why are they in my nutrition bar?
Learn more about sugar alcohols, including maltitol and lactitol, why some products contain them, and possible side effects.
Is it true that vitamin D can increase the risk of prostate cancer in men?
Information on the potential link between vitamin D and prostate cancer, based on a clinical study.
Which supplements and foods help with gout and which may worsen it?
Find out about the effects on uric acid levels and gout of fish and fish oil, coffee, beer, animal meat, milk proteins, vegetable proteins, fructose, lemon juice, tart cherry juice, vitamin A, vitamin C, and niacin
Which dietary supplements and health foods contain high levels of lead?
Information about lead and heavy metals in vitamins, supplements and foods. Information on the adverse effects of lead.
A blood test showed my vitamin D level is low. How do I know how much vitamin D to take?
Find out how to increase vitamin D blood levels, including a good target range.
Is it possible to get too much vitamin D?
Too much vitamin D can lead to adverse effects, including hypercalcemia (excess calcium in the blood).
Which supplements help reduce the risk of colorectal cancer?
Find out which supplements may reduce the risk of colorectal cancer, including folate, fiber, selenium, and vitamin D.
Can supplements with antioxidants like beta-carotene and vitamins A and E cause you to die sooner?
Learn more about antioxidants like beta-carotene, vitamin A, vitamin E, and their effect on mortality, or premature death.
Can CLA slimming supplements cause liver damage?
Find out more about CLA slimming supplements and their safety, including if they can cause liver damage.
Which supplements may help with PCOS (polycystic ovarian syndrome)?
Many supplements are promoted to help treat symptoms of PCOS (polycystic ovarian syndrome), but do they really work? See the clinical evidence for inositol (myo-inositol and D-chiro-inositol), alpha lipoic acid, vitamin B-12, folic acid, vitamin D and more.
Which supplements can help lower my triglycerides?
Find out whether fish oil supplements, or plant-based oil supplements, such as flaxseed oil and echium oil are best for lowering triglyceride levels. ConsumerLab.com's answer explains.
What are the health benefits of dark chocolate?
Information on the health benefits of dark chocolate, including how dark chocolate may improve heart health, decrease blood sugar levels and more. ConsumerLab.com's answer explains.
Do any supplements naturally suppress appetite and help with weight loss?
Learn which natural ingredients can suppress appetite and find if these natural appetite suppressants help with weight loss.
Can psyllium help control hunger and appetite?
Learn more about psyllium (found in Metamucil), including effects on appetite and hunger control, results from clinical studies and safety.
Is it true that there is no point in taking fish oil supplements for heart health?
Taking fish oil for heart health may be a benefit. Learn more about omega fatty acids from fish oil and it's impacts.ains.
I've been using a lutein supplement with 40 mg of lutein and am concerned that this dose may be too high. Are there known harmful side-effects?
Learn more about lutein side effects, proper dosage and safety in vision supplements.
How much cocoa or chocolate do I need to consume in order to get a benefit?
Learn more eating chocolate and cocoa including the benefits, amounts and info on studies.
Which supplements help with Raynaud's phenomenon?
Raynaud's phenomenon may be helped by some supplements. Learn more about fish oil, Gingko biloba, and ginseng.
I've heard that soaking dried beans for 24 hours reduces the phytate level, allowing for greater access to nutrients. Is this true?
Does soaking dried beans in water help reduce phytate levels to help gain greater access to nutrients?
Which supplements help with erectile dysfunction?
Supplements for erectile dysfunction. Find out which supplements can help with ED, including ginseng, L-arginine, and maca.
I have been having neurological symptoms. My blood test showed a toxic level of vitamin B-6. My multivitamin contains 75 mg of B-6 -- below the upper limit of 100 mg. Is the label wrong?
Find out if multivitamins contain excessive amounts ofvitamin B-6, symptoms of vitamin B-6 toxicity, and the daily Tolerable Upper Intake Level for B-6.
Do any supplements help with fatty liver disease? Are some diets more beneficial than others?
Find out if supplements such as vitamin E, fish oil, milk thistle, curcumin, choline, probiotics, vitamin D, reishi mushroom, or extra virgin olive oil are beneficial for fatty liver disease and learn which diet (Mediterranean, ketogenic, DASH, or fasting diets) seems to have greatest benefit.
Do you need to take vitamin K when taking vitamin D?
Find out if you need to take vitamin K when taking vitamin D and how this effects coronary artery calcification. Also learn if vitamin K supplements can reduce other harmful effects of high-dose vitamin D.
How are you staying healthy during the coronavirus pandemic?
Tips for staying healthy during the coronavirus (COVID-19) pandemic. Tips from ConsumerLab members for maintaining physical health, mental health and social well-being during COVID-19.
If I already take red yeast rice, would adding high-dose niacin help further reduce my cholesterol levels, and would this be safe?
Learn more about the effect of combining red yeast, statins and high-dose niacin on cholesterol and safety.
Are there any serious side effects with Lovaza or Epanova (prescription fish oil)? If so, would these also apply to generic versions of these drugs and to fish oil supplements?
Understand the side effects of prescription fish oil like Lovaza and Epanova, and find out if the generic fish oils are effective and safe.
Does taking a laxative interfere with the absorption of vitamins or minerals?
Information on laxative interactions with other medications and supplements such as Maalox, antibiotics, and statins and diabetes medications.
I'm over 50 and looking to take a vitamin B-12 supplement. Many contain a form of vitamin B-12 called cyanocobalamin, yet I read on the Internet that this form is toxic. Should I be concerned?
Looking to see if the cyanocobalamin form of vitamin B-12 is safe? Read research and safety information on ConsumerLab's report.
Do any supplements help for varicose veins or chronic venous insufficiency?
Find out which supplements help for varicose veins and chronic venous insufficiency, including citrus bioflavonoids and grape seed extract.
Supplements for multiple sclerosis (MS): Do any supplements reduce symptoms or relapse?
Find out if vitamins or supplements such as ginkgo, fish oil, biotin, vitamins A, C, E, D, and B12, or selenium reduce symptoms or relapse in people with multiple sclerosis (MS).
Is sublingual vitamin B-12, which is placed under the tongue and allowed to dissolve, really better than the pill form?
Learn the difference between sublingual vitamin B-12, vitamin B-12 pills and more through information including clinical evidence.
Does yacon syrup decrease appetite or help with weight loss? How do I find a quality brand?
Can yacon syrup can help with weight loss? Learn more, including clinical evidence, side effects, and dosage.
What are trace minerals and do I need them?
Trace minerals include boron, chromium, copper, iodine, iron, manganese, molybdenum, nickel, zinc, and others. Find out what they do, how much of each trace mineral you should be getting, and who's most likely to be deficient in these minerals.
Can magnesium supplements reduce heart palpitations or PVCs?
Having low blood levels of magnesium has been associated with abnormal heart rhythms known as PVCs (premature ventricular complexes). Find out if taking magnesium supplements can help.
Do Sugar Bear Hair Vitamins make hair shine, nails stronger, and help both to grow? They taste good but are super expensive.
Info on Sugar Bear Hair vitamins. Do they make hair shine, nails stronger and help hair and nails grow? ConsumerLab.com's answer explains.
What is acrylamide? Is it true that coffee and cocoa contain this toxin?
Find out what acrylamide is, how much is found in coffee and cocoa, and how you can minimize your intake of acrylamide.
Is Hershey's Special Dark better than other dark chocolate bars or cocoa powders?
Find out if Hershey's Special Dark Chocolate bar is better than other dark chocolate bars or cocoa powders, including flavanol content, contamination with lead or cadmium and other tests of quality. ConsumerLab.com's answer explains.
Do supplements help with Parkinson’s disease treatment or prevention?
Learn what has been shown with vitamins D and E, niacin, CoQ10, melatonin, creatine, SAMe, NAC, valerian, CoQ10, and CBD, as well as with coffee and the Mediterranean and MIND diets for treating and/or preventing Parkinson's disease.
Is there a risk of liver toxicity with certain supplements?
Find out if there is risk of liver damage from supplements such as green tea, niacin, red yeast rice and vitamin A.
I thought the B vitamins were all water soluble and did not build up in the body, so you would not build up toxic levels. Am I wrong?
Learn more about water-soluble B vitamins including niacin, B6, B12 and folic acid, and why taking too much of these vitamins can be toxic. See the symptoms of overdose and toxicity from B vitamins. ConsumerLab.com's answer explains.
Do any supplements, like Nervive, help with nerve pain, like sciatica or diabetic neuropathy?
Find out which supplements for nerve pain are effective. Sciatica & diabetic neuropathy may be helped, including fish oil and alpha-lipoic acid.
Is it true that taking turmeric/curcumin with food can reduce iron absorption from food?
Learn more about how to take turmeric/curcumin and if they limit iron absorption from food.
I have type 2 diabetes. Should I be concerned about ingredients like maltodextrin and maltitol that are found in some protein bars and drinks?
Learn more about maltitol and maltodextrin and their effects on blood glucose levels for people with type 2 diabetes.
Does Z-Stack multivitamin work to boost the immune system, and is it safe?
Find out about Z-Stack, including if it can help boost the immune system and if it is safe to use at the suggested dose.
Do diamine oxidase (DAO) supplements for histamine intolerance really work?
DAO supplement info for histamine intolerance, including diamine oxidase safety, evidence from clinical studies, and dosage.
Does Longevinex resveratrol really help for age-related macular degeneration?
Longevinex resveratrol information including how it helps age-related macular degeneration & clinical evidence.
I recently read that a gluten-free diet may increase your exposure to arsenic and mercury. Is this true?
Find out if your gluten-free diet is increasing your exposure to toxic heavy metals like arsenic and mercury.
Do glutathione supplements work to prevent aging or for other conditions?
Do glutathione supplements help with aging or other conditions such as cancer and diabetes?
I take 1000 mg of a high-absorption curcumin extract. It seems to be working, but would it be safe to take a larger dose?
Is it safe to take high doses of high-absorption curcumin extract? Learn more about these larger doses. ConsumerLab.com's answer explains.
Do vitamin C supplements help prevent cataracts?
Learn more about the link between vitamin C and cataracts, based on clinical evidence.
What is Pycnogenol and does it work?
Learn more about Pycnogenol, including evidence from clinical studies on blood clots, osteoarthritis, cognition, vision, tinnitus, and the skin and safety.
I do moderate exercise for about an hour a few times a week. Which supplements might help me?
Info on what supplements are best for work out & exercise regimens, including electrolytes, protein, creatine, and BCAAs.
Do supplements help treat peptic ulcer disease? Should any be avoided?
Vitamins and supplements that may help with peptic ulcer disease, including probiotics, cranberry, melatonin, lactoferrin, berberine, and licorice.
Clinical Updates (70)
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High Blood Pressure Risk With Too Much Folic Acid During Pregnancy
Also see our Top Pick among prenatal vitamins, which provides adequate (but not too much) folic acid, in our Multivitamin and Multiminerals Supplements Review.
Flaxseed Oil for High Blood Pressure?
Yogurt & High Blood Pressure
Vitamin D May Help Lower Blood Pressure
Vitamin D for Blood Pressure?
B Vitamin May Lower Blood Pressure
Fish Oil Lowers Blood Pressure
Beetroot for High Blood Pressure?
Cocoa for High Blood Pressure?
Magnesium, Niacin and Blood Pressure
Green Tea for Lowering Blood Pressure
Garlic and Blood Pressure
Magnesium & Metabolic Syndrome
Vitamin D for Hypertension?
Probiotics Lower Blood Pressure
Can a B Vitamin Lower High Blood Pressure?
Fish Oil and Blood Pressure
Vitamin D & Depression
Vitamin D for Failing Hearts?
Vitamin C and Blood Pressure
Acetyl-L-carnitine + Alpha-Lipoic Acid for Lowering Blood Pressure?
Vaccines, Blood Pressure, and Thyroid Symptoms
Flaxseed Lowers Blood Pressure
Low Vitamin D and Low Blood Pressure?
Magnesium for Lowering Blood Pressure?
Grape Seed Extract for Blood Pressure?
Coconut Oil for Lowering Blood Pressure?
Magnesium for Lowering Blood Pressure?
Magnesium Lowers Blood Pressure
CoQ10 for Orthostatic Hypotension
Whey Protein & Blood Pressure
Older people may experience a dip in blood pressure after consuming whey protein, according to a recent study. Get the details in the Concerns and Cautions section of our Protein Powders, Shakes, and Drinks Review.
Folic Acid Reduces Risk of Stroke
Vitamin D Sweet Spot
Magnesium for Metabolic Syndrome?
Vitamin D for Dizziness When Rising?
Vitamin D for Orthostatic Hypotension?
Energy Drinks and Blood Pressure
Peanuts for Obesity?
B12 & the Vegetarian
Vitamin K & Heart Health
Vitamin D's Cardiovascular Effect
More Cocoa Benefits
Green Tea "Blocks" Beta-Blocker
If you take a beta-blocker (which includes the popular drugs metoprolol (Lopressor, Toprol) and propranolol (Inderal)), be aware that chromium and CoQ10 may offer benefits.
Choosing a Tart Cherry Product
Which tart cherry products are best for reducing muscle pain, improving sleep, or lowering blood pressure or cholesterol? Although the evidence is not strong, we identified products with the most evidence behind them in our Tart Cherry article.
Help for Dizziness When Standing
Many people experience lightheadedness when standing up due to a temporary drop in blood pressure but certain techniques may help, according to a new study. Get the details in our new article How to Reduce Lightheadedness and Dizziness When Standing Up (Orthostatic Hypotension).
Antioxidants: Too Much of a Good Thing?
Hair & Nail Supplements Can Skew Lab Tests
Lower Cancer Risk With High Vitamin D?
Cocoa Increases Blood Flow to Brain
CBD Interaction With Warfarin
Biotin May Skew Many Blood Tests
Vitamin D & Blood Sugar Control
Vitamin C for Blood Sugar Control
Fish Oil Interaction With Medication
Vitamin D Keeping You Up?
Biotin Interference With Vitamin D Test
Potential Risk with High B-12
Vitamin D for Muscle and Balance?
Fish Oil Helps After Heart Attack
Folate & Memory
Vitamin D for Breast Cancer?
Optimum Level of Vitamin D
Did you hear that DHA (an omega-3 fatty acid in fish oil) might raise the risk of prostate cancer?
Adding Vitamin D to Statin Treatment
Vitamin D and Statin-Related Muscle Pain
Too Much Vitamin D
Risk of Too Much B-12
It’s easy to get way more vitamin B-12 than one needs from supplements. Unfortunately, high blood levels of B-12 are being linked to higher risks of death and disease, as shown in a recent U.S. study. Get the details in the Upper Limit for B-12 section of our B Vitamin Supplements Review. Also, see our Top Pick among B-12 supplements.
Vitamin D & Death From COVID
Some research suggests that low blood levels of vitamin D increase the risk of death from COVID, but a new study suggests that high levels also increase risk. Get the details in the COVID section of our Vitamin D Supplements Review.
Also see our answer to the question: Do any supplements help with the coronavirus (COVID-19)?
Glucosamine & Eye Pressure
Glucosamine May Increase Eye Pressure
Recalls & Warnings (448)
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FDA Warns Seller of Reishi, Joint Supplements, Ginseng & More for Pesticides, Other Violations
FDA Warns Seller of Milk Thistle, Chromium, Joint Supplements & More for Manufacturing Violations
FDA Warns Seller of Arthritis, Blood Pressure, Diabetes Supplements For Making Drug Claims
FDA Warns Seller of DHEA, Creatine, Chromium & More for Manufacturing Violations, Drug Claims
Seller of "Super Strength Prostate Formula," Acai Berry Supplements & More Warned for Drug Claims
Some Supplements May Cause or Exacerbate Heart Failure (Includes vitamin E and many herbs)
Seller of CoQ10, Anxiety Supplements and More Warned for Manufacturing Violations, Drug Claims
Joint Pain Supplements Found to Contain Diuretics, Antihistamines and Other Undeclared Drugs
Herbal Laxative and "Detox" Kit Containing High Levels of Lead and/or Arsenic Recalled in Canada
Seller of Antioxidant Water, Energy Drops Warned for Manufacturing Violations and Drug Claims
Seller of Green Tea, Prostate, Pain Supplements and More Warned for Manufacturing Violations and Drug Claims
Seller of B Vitamins, CoQ10, Amino Acids and Other Supplements Warned for Manufacturing Violations and Drug Claims
Seller of Aloe, Thyroid and Other Supplements Warned for Manufacturing Violations and Drug Claims
Seller of Sexual Enhancement Supplement and Tea Drink Warned for Drug Ingredients and Drug Claims
Seller of Herbal Supplements and "Tonics" Warned For Manufacturing Violations and Drug Claims
Seller of Liquid Minerals, Joint Care and Herbal Supplements Warned For Manufacturing Violations, Drug Claims
Seller of Sexual Enhancement, Cholesterol, Resveratrol Supplements and More Warned For Drug Claims
Manufacturer of Heart, Multivitamin, Cranberry, and Longevity Supplements Warned For Adulteration and Drug Claims
Growth Factor Supplement For "Size, Strength and Stamina" Recalled Due To Potential Contamination
Maker of Blood Pressure, Probiotic, Resveratrol and Hormonal Supplements Warned For Manufacturing Violations and Drug Claims
Maker of Joint Health, Blood Sugar, Prostate, Ginkgo Supplements and More Warned For Drug Claims, Misbranding and Adulteration
Manufacturer of Green Tea, Vitamin E, Omega-3 and Cranberry Supplements Warned For Manufacturing Violations, Misbranding and Drug Claims
FDA Warns Consumers of Weight Loss and Body Reshaping Supplements Containing Controlled Substance
Maker of Noni, Nopal, Blood Sugar and Cholesterol Supplements Warned For Drug Claims, Misbranding, and Manufacturing Violations
Distribution of Weight Loss Product Containing DMAA Should Be Stopped Immediately, Warns FDA
Supplement Company Warned For Medical Claims and Misbranding Of Omega-3, CoQ10, Noni Juice And More
FDA Warns of Life-Threatening Side Effects and Withdrawal Symptoms from Two Arthritis, Muscle Pain Supplements
Prescription and Street Drug Alternatives Found in Male Enhancement, Mood, and Sleep Supplements
FDA Seeks Permanent Injunction Against Dietary Supplement Maker -- 400+ Products Affected
Recall of Calcium & Magnesium Softgels Containing Excessive and Potentially Toxic Amounts of Vitamin D
Nationwide Recall of a Weight Loss Supplement Found to Contain Undeclared Drug Ingredients
Possible Risk Rather than Benefit Found in Trial of Vitamin E and Selenium for Prostate Cancer
FDA Warns that Dietary Supplements Containing Ephedrine Alkaloids are Illegal and Pose Risk to Users
Recall and Warning for Another Sexual Enhancement Supplement Illegally Containing Viagra Ingredient
Warning and Recall for "Herbal" Sexual Enhancement Supplement in Canada Illegally Containing Pharmaceutical Compound
News Releases (24)
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Caution With Cinnamon: ConsumerLab Tests Reveal High Amounts of Toxin in Some Supplements and Spices