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Showing Results for Constipation

CL Answers (35)

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Which supplements can cause constipation?

Find out which supplements can cause constipation, including iron, calcium, protein powders and drinks and others. ConsumerLab.com's answer explains.

Which supplements can cause constipation? -- Woman with gastrointestinal pain

Which supplements can help treat constipation?

Find out which supplements can help for constipation, including fiber, flaxseed, probiotics, and magnesium.

Supplements for Constipation

Can turmeric or curcumin with black pepper extract cause constipation? I had this problem, but it resolved when I switched to a curcumin supplement without piperine (black pepper extract).

Learn more about black pepper extract, why it is added to turmeric/curcumin supplements, and if it can cause gastrointestinal effects.

Turmeric or Curcumin

After taking a curcumin supplement, I started getting chronic diarrhea which went away when I stopped taking it. Can curcumin supplements cause diarrhea?

Learn more about the side effects of curcumin supplements, including diarrhea and other gastrointestinal discomfort.

Woman Holding Curcumin Capsule and Water

Is magnesium citrate safe? I heard that it might cause damage to the esophagus.

Find out if magnesium citrate is safe to use or if it causes damage to the esophagus.

Magnesium citrate in a spoon over a glass of water

What is the best form of iron supplement?

Find out the best form of iron (such as ferrous glycinate, rerrous bisglycinate, ferrous sulfate and others) to take as a supplement, which form is best-absorbed and least likely to cause stomach upset. ConsumerLab.com's answer explains.

Iron Supplements Reviewed by ConsumerLab.com

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.

Magnesium Side Effects -- Magnesium supplements

Are there supplements I should take, or take differently, when intermittent fasting?

Supplements that may help when intermittent fasting. Information about whey protein, CoQ10, magnesium and others, plus coffee, fiber and more.

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.

Health Benefits of Manuka Honey -- jar of manuka honey

Does magnesium cause diarrhea? Are some forms less likely to cause loose stools than others?

Could your magnesium supplement be causing diarrhea? Find out why the dose of magnesium in your supplement matters, and which forms of magnesium are less likely to cause diarrhea ConsumerLab.com's answer explains.

Magnesium Supplements Reviewed By ConsumerLab.com

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.

Taking Vitamin K With Vitamin D

As vitamin D is a fat-soluble vitamin, why is it necessary to take it every day?

Find out how best to take vitamin D supplements, including cautions on overdoses.

Do I need to take vitamin D daily

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.

Taking Too Much Fish Oil -- bottle of fish oil and fish oil capsules

I have IBS and don't want to take medication if I can help it. I've heard that peppermint works for IBS, but is there good research to support this?

Information about using peppermint oil for irritable bowel syndrome (IBS), including clinical evidence, dosage, safety and more.

Peppermint Oil for IBS? -- Bottle of peppermint oil and capsules and peppermint leaf

Do any supplements help for irritable bowel syndrome (IBS)?

IBS supplements may help reduce irritable bowel symptoms such as pain, diarrhea and constipation. Supplements include probiotics, melatonin, and flaxseed.

Supplements for IBS? -- Women With Stomach Pain

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.

Are there side effects from collagen supplements?

Find out if there are collagen side effects from supplements (collagen hydrolysate, collagen peptides, etc.) such as nausea, constipation, skin rash and others. ConsumerLab.com's answer explains.

Collagen Supplement Side Effects -- woman with stomach pain

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.

Laxatives and vitamin and mineral absorption

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.

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).

Too Much Vitamin D? -- bottle of vitamin D and vitamin D tablets in the shape of the letter D

Which supplements have been shown to be helpful for autism?

Find out which supplements may help reduce symptoms of autism, including multivitamins, probiotics, and melatonin.

Does Restore (Bionic Sciences LLC) really improve gut health? What is in Restore?

Learn more about Restore, including clinical studies on gut health, dosage, cost, and safety.

What is Prelief? Does it really help for heartburn and/or bladder pain from acidic foods?

Prelief information, including what it has been claimed to do (such as helping with painful bladder, frequent urination, heartburn or indigestion from acidic foods), clinical evidence, and safety.

What are the health benefits of andrographis? Can it treat colds, help with joint pain, or other conditions, and is it safe?

Learn about the health benefits of andrographis, whether it can help relieve cold symptoms, reduce pain and stiffness of osteoarthritis or rheumatoid arthritis, decrease symptoms of ulcerative colitis, or slow the growth of cancer. See the clinical evidence for the branded andrographis extract ParActin. Plus, learn about dosage, side effects and drug interactions with andrographis.

Andrographis

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.

A bottle of Z-Stack capsules

Does OsteoMD improve calcium absorption and increase bone density?

ConsumerLab reviews the evidence for OsteoMD by 1MD, a bone health supplement promoted to slow bone loss and reduce the risk of osteoporosis.

OsteoMD by 1MD

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.

What is lactoferrin and will it really strengthen my immune system?

Info about lactoferrin supplements, clinical evidence for strengthening the immune system, preventing or treating colds, gut health and treating H.

What is Lactoferrin? -- lactoferrin capsules and bottle

What are the health benefits of grapefruit seed extract (GSE)? Is it safe?

Learn more about grapefruit seed extract health benefits, including its possible antifungal and antibacterial effects and its safety.

Grapefruit with Extract and Spoon

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.

Container of natural appetite suppressant supplement with measuring tape and scale in background

Does Prevagen really improve memory?

Learn more about Prevagen, including clinical studies on Prevagen's impact on memory & cognition, safety, pricing, and an FDA warning letter. ConsumerLab explores the efficacy of Prevagen.

Prevagen for Memory? -- bottle of Prevagen

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.

Trace Minerals - What are they and do you need them?

I read that famotidine (Pepcid) may help treat COVID-19. Is this true? Might a proton pump inhibitor, like Prilosec, help?

Pepcid (famotidine) was reported to improve outcomes in people with COVID-19 in China. But is there evidence that Pepcid really helps to treat COVID-19?

Can Pepcic (famotidine) Treat COVID-19? -- Box of Pepcid and Handout About COVID-19

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.

Bottles of vitamin C pills

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.

Blood Sugar Control -- blood test and blood sugar chart
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Recalls & Warnings (22)

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1/13/2022

Senna Laxative Recalled Due to Microbial Contamination
2/22/2021

Canadian Creatine Recalled for Dangerous Levels of Vitamin D
1/25/2021

Clover Leaf Sardines Recalled Due to Risk of Botulism
7/21/2020

51 CBD Products Recalled Due to Lead Contamination
5/16/2020

CBD Oil Recalled, Risk of High Lead Exposure
2/26/2020

Company Failed to Report Adverse Events Associated With Its Nutrition Shakes
2/19/2019

Alaskan Smoked Silver Salmon in Jars and Cans Recalled Due to Risk of Botulism
5/06/2017

Herbal Teas Recalled Due To Botulism Risk
1/28/2017

FDA Testing Confirms Elevated Levels of Belladonna in Some Homeopathic Teething Products
10/01/2016

Homeopathic Teething Tablets and Gels May Pose Danger, FDA Warns
8/05/2016

U.S. Marshals Seize $150,00 Worth of Kratom
1/20/2016

Seller of Aloe, Moringa Supplements Warned for Manufacturing Violations, Drug Claims
1/12/2016

Over $400,000 Worth of Kratom Supplements Seized by U.S. Marshals
11/07/2015

Seller of "NaturalDoctor" Vitamin C, Echinacea and More Warned for Manufacturing Violations
8/06/2015

Children and Adult Gummy Vitamins Recalled in Canada Due to Excessive Vitamin D
9/30/2014

U.S. Marshals Seize $5 Million Worth of Kratom
5/06/2014

Seller of Flaxseed, Ginkgo and More Warned for Manufacturing Violations and Drug Claims
3/21/2014

Products Containing Kratom Recalled Following FDA Import Alert
7/01/2013

Teas Recalled Due To Potential Botulism Contamination
6/22/2011

Recall of Calcium & Magnesium Softgels Containing Excessive and Potentially Toxic Amounts of Vitamin D
6/21/2010

FDA Warns Parents to Be Careful Giving Vitamin D Drops to Infants
1/31/2010

Glucomannan May Cause Choking if Not Taken with Fluid
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Clinical Updates (5)

Search term may appear only in full report available to members. Join now for full access.

8/16/2016

Inulin for Constipation
A small study among men and women with constipation found that inulin, a type of prebiotic, was able to modestly increase the frequency of bowel movements in men and women with constipation. For details, evidence for other uses of prebiotics and our tests of products, see the Probiotics Supplements Review >>
10/24/2015

Probiotic Helps with Constipation
A recent study found that taking a particular probiotic twice a day after meals significantly increased the number of bowel movements in people with chronic constipation. For details about the probiotic and dose, see the Probiotic Supplements Review >>
7/14/2020

Precaution When Taking Iron

Supplementing with iron can cause constipation and even bowel obstruction. Find how to reduce these risks when taking iron in the ConsumerTips section of the Iron Supplements Review. Also see our Top Picks for iron.
6/26/2021

Caution With Too Much Magnesium
Magnesium can be an effective laxative, but taking too much magnesium can be very dangerous, as was recently reported. Get the details in the Concerns and Cautions section of our Magnesium Supplements Review.

Also see our answer to the question: Which supplements can help treat constipation?
8/07/2021

Curcumin for Indigestion?
How well does curcumin (from turmeric) improve digestive symptoms such as indigestion, diarrhea or constipation? See what a new study found in the What It Does section of our Turmeric and Curcumin Supplements & Spices Review. Also see our Top Picks among turmeric and curcumin products.
Results
  1. Product Reviews
  2. CL Answers
  3. Recalls & Warnings
  4. Clinical Updates
  5. News Releases