September 1989 in “Neuroscience letters” People need different amounts of biotin based on age, and not getting enough can cause health problems.
June 2012 in “한국생활과학회지 = Korean journal of human ecology” The supplement reduced hair loss and increased hair thickness without side effects.
April 2026 in “Journal of Pharmacy Practice” Improper vitamin use after bariatric surgery can cause acne.
71 citations
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June 2008 in “Annals of Internal Medicine” Excessive selenium from supplements can be harmful.
January 2021 in “Scandinavian journal of clinical and laboratory investigation” The document describes a way to measure biotin in blood to prevent wrong test results in hormone level testing.
Biotin supplements don't consistently help hair growth in alopecia unless there's a deficiency.
September 2023 in “Food and chemical toxicology” High doses of some selenium supplements caused liver and reproductive harm in rats.
26 citations
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May 1984 in “Journal of Parenteral and Enteral Nutrition” Biotin supplements restored hair and resolved symptoms in a woman with biotin deficiency.
Supplements improve health, appearance, and athletic performance.
1 citations
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July 2022 in “Dermatologic Therapy” Both brands of biotin and dexpanthenol injections improved hair loss, with Bayer also increasing the ratio of thick to thin hairs.
3 citations
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June 2012 in “Korean Journal of Human Ecology” The supplement reduced hair loss and increased hair thickness safely.
23 citations
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January 1991 in “Journal of Animal Science” Biotin supplementation in sow diets is unnecessary.
1 citations
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July 2023 in “Plastic and Aesthetic Nursing” Biotin and collagen may improve hair health.
The supplement improved hair density and overall hair beauty.
1 citations
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May 2019 in “Annals of Medicine” Many food supplements in Portugal have mineral doses above safe levels, posing health risks.
January 2023 in “Italian journal of dermatology and venereology” The supplement effectively improved hair growth and reduced hair loss safely.
September 2025 in “Dietary Supplements and Nutraceuticals” Cerebronal® may help improve certain brain health markers.
September 2023 in “Baylor University Medical Center Proceedings” Some alternative supplements might help with hair loss due to androgenetic alopecia.
1 citations
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May 2017 in “Asian journal of medical sciences” The dietary supplement significantly improved skin, nails, and hair in older adults.
2 citations
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July 2018 in “Elsevier eBooks” Some supplements may help with hair loss, but there's not enough strong evidence to recommend them without doctor advice.
67 citations
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January 2007 in “Environmental health perspectives” A woman's health issues were caused by arsenic poisoning from kelp supplements.
2 citations
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August 2024 in “Molecular Genetics & Genomic Medicine” Biotin mega-dose therapy led to dramatic improvement in a newborn with a rare metabolic disorder.
11 citations
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November 2022 in “JAMA dermatology” Some nutritional supplements may help treat hair loss with generally mild side effects.
15 citations
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July 1984 in “Nutrition Research” Selenium increased in hair but not in blood after taking supplements.
3 citations
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March 2022 in “International Journal of Trichology” Special supplements with collagen, vitamins, and minerals can help treat hair loss.
March 2022 in “Annals of Bariatric Surgery” Protein supplements with zinc, iron, and B vitamins reduce hair loss after sleeve gastrectomy.
March 2023 in “International Journal of Science and Research (IJSR)” Iron supplements improve life quality for people with anemia.
27 citations
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January 2015 in “International Journal of Trichology” The supplement helps improve hair growth and reduce hair shedding.
3 citations
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January 2017 in “Journal of cosmetology & trichology” The food supplement with L-cystine, Serenoa repens extract, and biotin safely reduced hair loss and improved hair growth in men and women.
January 2025 in “Open Veterinary Journal” Supplements improved the dog's hair growth without side effects.