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Should I be concerned about pyrrolizidine alkaloids in herbal supplements?

Find out which herbal supplement ingredients contain pyrrolizidine alkaloids (PAs), learn why these constituents are a safety concern, and find out how supplements containing these ingredients are regulated in the U.S. and Europe.

Herbal capsules being poured out of supplement container onto table

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).


Top 8 Supplements for Vegetarians and Vegans

Find out which 8 supplements may be needed by vegetarians or vegans to meet all their daily nutrient requirements and learn ways to find supplements that do not contain ingredients objectionable to people following vegetarian or vegan diets.

Woman pouring supplements into her hand while sitting in front of a table on which vegetables are placed

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.

Capsules with white powder and spoon holding white powder on white background

5 Tips for Finding a Soap or Body Wash That Won't Irritate Skin

Get 5 tips for finding soap or body wash that won't cause skin irritation. See which soaps we rate best, ingredients to avoid, and phrases on labels that can mislead.

Different bars of soap on a marble countertop

Which supplements reduce hearing loss?

Can supplements such as alpha-lipoic acid, magnesium, N-acetyl-cysteine, folate or vitamins B-12, C and/or E help prevent or improve symptoms among people with hearing loss due to excessive noise or aging? Find out what the clinical evidence shows, and learn whether Advanced Hearing Formula, a supplement marketed for ear health, is likely to help.

Older man holding his hand up to his ear due to hearing loss

Butyrate Supplements for Gut Health: Does butyric acid really work and is it safe?

Can butyrate supplements improve gut health or help reduce symptoms of irritable bowel syndrome (IBS) or Crohn's disease? Find out what the clinical evidence shows, learn about the different forms of butyrate, including sodium butyrate, calcium-magnesium butyrate, and tributyrate, and get details about products such as BodyBio Sodium Butyrate and Healus Complete Biotic Tributyrin, dosage, safety and cost.

Butyrate Supplements

When choosing a vitamin C supplement, should you look for one that is "reduced," "L" form (l-ascorbic acid), or "natural"?

Are supplements containing "natural" vitamin C, "reduced" vitamin C, or l-ascorbic acid better than regular vitamin c or ascorbic acid supplements? Find out if these forms are better absorbed or have other advantages, plus, learn about buffered and slow-release forms of vitamin C.

Forms of Vitamin C

What are the health benefits of bovine colostrum and is it safe?

Bovine colostrum is promoted for boosting immunity, preventing and treating diarrhea, and improving gut health, but does it really work? See the clinical evidence for bovine colostrum, including doses that have been used, as well as safety concerns, cost considerations, and the difference between regular bovine colostrum and hyperimmune bovine colostrum.

Bovine colostrum powder and capsule supplements

Which dietary supplements are most often linked to adverse reactions by users?

Find out which types of supplements are most likely to cause adverse effects such as nausea, dizziness, racing heart, or insomnia based on a study of supplement users. Also learn how often adverse effects are reported when taking workout and bodybuilding supplements, weight loss supplements, and more.

Man Experiencing Chest Pain
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