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Can fluoride in toothpaste, mouth rinses or drinking water cause attention-deficit/hyperactivity disorder (ADHD) or other neurodevelopmental disorders in children?

Find out if community water fluoridation increases the risk of attention-deficit/hyperactivity disorder (ADHD) or causes lower IQ in children, and learn what the American Dental Association recommends when using fluoride-containing toothpaste and mouth rinses in children.

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Do any supplements help with gum disease or periodontitis?

Supplements for healthy gums may help with gum disease or periodontitis. Learn more about omega fatty acids, lycopene, and probiotics.

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Can any vitamins or minerals help prevent or reduce canker sores or cold sores?

Find out which, if any, supplements, including iron, L-lysine, monolaurin, olive leaf extract, vitamin B-12, and zinc, may be beneficial for canker sores or cold sores.

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Do Any Supplements Improve Dry Mouth (Xerostomia) or Make It Worse?

Find out if any supplements, topical formulations (patches, rinses, lozenges, toothpastes, sprays, gels or gums), or lifestyle modifications reduce dry mouths symptoms.

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Sugar Substitutes: Pros, Cons, and Best Choices

Learn about the pros and cons of using sugar substitutes and artificial sweeteners in place of table sugar. Sweeteners discussed include stevia, monk fruit, and other high-intensity sweeteners; xylitol, erythritol, allulose and other low-calorie sweeteners; and agave syrup, black sugar, coconut sugar, honey, molasses and other sugar alternatives.

Recalls & Warnings

September 19, 2022

Colgate Toothpastes, Fixodent, Poligrip, & Other Personal Care Products Recalled by Family Dollar

On September 15 and 16, 2022, Family Dollar issued a recall of certain toothpastes, mouthwashes and denture adhesives, as well as other personal care products, because the products were stored and shipped outside of labeled temperature requirements.

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Which foods and supplements contain lead, cadmium, or arsenic?

Discover which foods and dietary supplements contain lead and other metals, the limits, who’s testing, and how to stay safe.

Recalls & Warnings

April 24, 2024

NOW Solutions XyliWhite Coconut Oil Toothpaste Gel Recalled

On March 6, 2024, NOW Foods issued a recall of over 27,000 units of NOW Solutions XyliWhite Coconut Oil Toothpaste Gel because it has an off taste and flavor.

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PFAS (Per- and Polyfluoroalkyl Substances): How can I avoid PFAS in dental floss, food, water, and other products?

Some brands of dental floss, including Oral-B Glide, may contain potentially toxic chemicals known as PFAS (polyfluoroalkyl substances). Get the details, and learn which floss and pick products are our Top Picks.

Recalls & Warnings

April 27, 2023

FTC Returns over $1.1 Million to Consumers for RevMountain Teeth Whitening Products

On April 25, 2023, the FTC announced it will be returning over $1.

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Which supplements, foods or diet and lifestyle changes help relieve acid reflux (heartburn), and which worsen it?

Find out which supplements and foods can help relieve acid reflux, and which can make it worse.

Recalls & Warnings

June 10, 2024

StellaLife Homeopathic Oral Rinse & Spray Recalled Due to Yeast, Mold, and Bacteria

On June 5, 2024, HomeoCare Laboratories, Inc.

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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.

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I take levothyroxine (Synthroid), a thyroid hormone to treat hypothyroidism. Are there supplements or foods 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.

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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.

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Which deodorants and antiperspirants are contaminated with benzene and which are not?

Benzene, a carcinogen, has been detected in over 40 spray deodorants, antiperspirants, and body sprays. Tests were conducted on brands including Axe, Bath & Body Works, Brut, Degree, Dove, Gold Bond, Right Guard, Secret, Speed Stick, Suave, Old Spice, Victoria's Secret and others. Find out which products contained benzene, and how much they contained.

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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.

CL Answer

Do sea moss and carrageenan have health benefits? Are there risks?

Sea moss is promoted for thyroid health, boosting immunity, improving gut health, and other uses. Find out if it works and learn about possible side effects of sea moss and its constituent, carrageenan.

Recalls & Warnings

April 11, 2020

FDA Warns Sellers of CBD, Colloidal Silver & Natural Remedies Promoted to Treat Coronavirus

Between April 7 and April 9, 2020, the FDA issued warning letters to five companies for selling products such as CBD, colloidal silver, and natural treatments with unsupported claims that they can treat coronavirus (COVID-19).

Recalls & Warnings

December 19, 2024

Jarritos Coconut Water Recalled

On November 4, 2024, Tipp Distributors, Inc. issued a recall all lot codes of Jarritos Coconut Water (17.5 fl oz cans) because the airtight seal on the lid of the cans may be compromised.

Recalls & Warnings

May 14, 2016

Xylitol in Supplements Poses Danger for Dogs

On May 12, 2016, the FDA warned consumers that xylitol, a popular sweetener found in chewable vitamins, chewing gum, breath mints, toothpaste and a variety of other products, is toxic to dogs.