March 2022 in “Annals of Bariatric Surgery” Protein supplements with zinc, iron, and B vitamins reduce hair loss after sleeve gastrectomy.
June 2022 in “International Journal of Research in Dermatology” Injectable platelet-rich fibrin is a safe and effective treatment for hair loss.
24 citations
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July 1979 in “Archives of Dermatology” Patients with renal disease may develop vitamin A toxicity even with low-dose supplements.
7 citations
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July 1979 in “Archives of Dermatology” Patients with renal disease should be cautious with vitamin A supplements due to risk of toxicity.
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.
239 citations
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July 2002 in “Clinical and Experimental Dermatology” Low iron and L-lysine levels can cause hair loss in women, and increasing these nutrients can reduce hair shedding.
1 citations
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April 2024 in “Veterinary Science and Medicine Journal” The dog's skin condition improved with treatment, and prevention includes keeping it dry, clean, and away from stray dogs.
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 2024 in “Jurnal Ilmu Kesehatan Hewan” The cat fully recovered after treatment and showed no further symptoms.
The man has patchy hair loss likely due to alopecia areata.
May 2004 in “Medicine & Science in Sports & Exercise” Over-training and under-eating caused weight gain, resolved by increasing calories and adjusting exercise.
May 2004 in “Medicine & Science in Sports & Exercise” Over-training and under-eating caused weight gain, resolved by increasing calories and adjusting exercise.
September 2019 in “PubMed” The conclusion suggests using a science-based, multi-targeted treatment for hair loss instead of just biotin.
Taking too much biotin can mess up blood test results, which might lead to wrong diagnoses and treatments.
September 2022 in “Farmacja Polska” Biotin is important for health, but taking extra usually doesn't help unless you're deficient.
5 citations
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October 2019 in “Giornale italiano di dermatologia e venereologia” Biotin supplements can improve certain skin disorders and hair loss when a deficiency is present.
13 citations
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January 2019 in “Journal of the American Academy of Dermatology” Most people using biotin don't see skin improvements, and it may affect lab tests, so doctors shouldn't suggest it without confirming a deficiency.
5 citations
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December 1942 in “Journal of the American Medical Association” Choline and biotin are important for liver health and preventing certain deficiencies in animals, and more research is needed to understand their benefits in humans.
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.
Older people tend to have higher biotin levels, which are weakly linked to certain blood components and negatively linked to triglycerides; biotin should be checked in patients with high triglycerides or medication-related skin issues, and only supplemented if deficient. Vitamin D and folate deficiencies are linked to specific skin conditions.
55 citations
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July 1983 in “Journal of the American Academy of Dermatology” Biotin supplements can effectively treat hair loss and skin issues in certain enzyme deficiencies.
September 2024 in “Cosmoderma” Biotin doesn't help hair growth in healthy people and can cause health risks if overused.
March 2013 in “International Society of Hair Restoration Surgery” Biotin may not effectively promote hair growth.
September 2024 in “Journal of Clinical and Translational Endocrinology Case Reports” Biotin can interfere with lab tests, causing misdiagnosis.
4 citations
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August 2018 in “Journal of The American Academy of Dermatology” The authors agree that biotin may help certain hair disorders but lacks evidence for use in healthy people and call for more research.
March 2023 in “JIIS (Jurnal Ilmiah Ibnu Sina): ilmu farmasi dan kesehatan” The best biotin hair tonic formula has 20% span 80, 9.47% tween 80, and 5% PEG 400.
November 2022 in “Journal of the Endocrine Society” Taking biotin can lead to incorrect low results in free testosterone tests.
74 citations
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July 1979 in “Lancet” Biotin treatment can significantly improve hair loss and motor functions in certain metabolic disorders.
January 1994 in “SÖFW. Seifen, Öle, Fette, Wachse” Multiactive ingredients like panthenol and B-vitamins improve hair and skin health.