March 1993 in “Neuroscience letters” Biotin is important for metabolism, with specific daily intake recommendations, and deficiency can cause health problems.
September 1989 in “Neuroscience letters” People need different amounts of biotin based on age, and not getting enough can cause health problems.
7 citations
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March 2002 in “AIDS” Indinavir, especially with vitamin A, may cause bone changes, but switching to nelfinavir can reduce these effects.
June 2023 in “Small animal advances” Selamectin spot-on effectively treats scabies in rabbits.
April 2024 in “Jurnal Ilmu Kesehatan Hewan” The cat fully recovered after treatment and showed no further symptoms.
July 2025 in “Buletin Veteriner Udayana” The dog's skin condition improved with treatment, but full recovery wasn't achieved, and environmental cleaning is advised to prevent re-infection.
April 2025 in “Journal of Applied Veterinary Science And Technology” The cat's health improved significantly after treatment.
The man has patchy hair loss likely due to alopecia areata.
7 citations
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October 2020 in “Dermatology practical & conceptual” Some skin, hair, and nail supplements can be toxic, interact with medications, affect lab tests, and may increase cancer risk.
3 citations
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February 2020 in “International journal of women’s dermatology” Most women with hair loss take more supplements than average, but these often don't help and can be risky and costly.
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.
Calcium and magnesium levels in hair decrease after taking supplements, indicating early metabolic changes in perimenopausal women.
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.
3 citations
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June 2012 in “Korean Journal of Human Ecology” The supplement reduced hair loss and increased hair thickness safely.
January 2023 in “Side effects of drugs annual” Some vitamins, amino acids, and alternative medicines can cause serious side effects, including bone, muscle, and skin issues, and healthcare professionals should be aware of these risks.
The conclusion is that hair supplement ingredients may be unsafe and should be disclosed and proven safe before use.
2 citations
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June 2023 in “Journal of the American Academy of Dermatology” Hair, skin, and nails supplement use nearly doubled from 2011 to 2020, with higher usage among young adults, females, and certain ethnic groups.
May 2023 in “Elsevier eBooks” Some nutritional supplements may help thicken hair in people with hair loss, but taking too much can cause side effects.
20 citations
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November 2017 in “PubMed” A new supplement may treat hair loss by targeting multiple causes like inflammation and stress.
4 citations
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December 2020 in “Current sports medicine reports” Athletes usually get enough vitamins and minerals from a healthy diet, and supplements are only needed for those with actual deficiencies.
April 2016 in “Journal of The American Academy of Dermatology” A vitamin and mineral supplement significantly reduced hair shedding in Brazilian women with telogen effluvium.
3 citations
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September 2025 in “ChemMedChem” Multitarget drugs are needed to better treat complex diseases.
January 1994 in “SÖFW. Seifen, Öle, Fette, Wachse” Multiactive ingredients like panthenol and B-vitamins improve hair and skin health.
November 2024 in “PubMed” The supplement improved hair density and was safe to use.
August 2025 in “Quality in Sport” Vitamin A is essential but too much can be harmful, especially from supplements.
August 2022 in “Journal of the American Academy of Dermatology” The authors agree they didn't discuss the risks of too much micronutrients and value the focus on biotin deficiency signs and treatment effectiveness.
May 2021 in “Research journal of topical and cosmetic sciences” TrichovitalsTM improved skin, hair, and nail health in adults after 12 weeks.
June 2022 in “Research journal of topical and cosmetic sciences” Trichovitals® supplement improves hair thickness, reduces hair loss, and promotes hair growth in young adults.
February 2024 in “Cosmoderma” Micronutrient supplements for hair loss may not help and could be harmful without proven deficiencies.
Taking too much biotin can mess up blood test results, which might lead to wrong diagnoses and treatments.