Does Biotin Supplementation Nail Health Randomized Trial work?

The current Migaku evidence database contains 1 reusable source document for Biotin Supplementation Nail Health Randomized Trial. This answer focuses on strength of evidence and what the studies can or cannot prove. - However, deficiency may occur in specific at-risk groups, including individuals receiving long-term antibiotic therapy (which disrupts intestinal flora), chronic anticonvulsant therapy (which alters biotin metabolism), or total parenteral nutrition without adequate supplementation. [Cervantes A (2025); evidence level 4] - While biotin supplements are widely marketed for hair, skin, and nail health, limited clinical evidence supports their use in individuals without a documented deficiency. [Cervantes A (2025); evidence level 4] - Moreover, high-dose biotin supplementation has been shown to interfere with immunoassays, particularly those measuring thyroid hormones and cardiac biomarkers (eg, troponins), which may result in false-positive or false-negative results and lead to inappropriate diagnostic or therapeutic decisions. [Cervantes A (2025); evidence level 4] - Biotin (vitamin B7) is a water-soluble B-complex vitamin that plays a vital role in cellular metabolism. [Cervantes A (2025); evidence level 4] Evidence levels are sorting aids, not final clinical grades. Level 1 usually indicates systematic-review style evidence, level 2 indicates randomized trials or public-health guidance, and lower levels need more cautious wording. This page is educational. People with medical conditions, pregnancy, medication use, or unusual symptoms should ask a qualified clinician before changing supplements, medication, or treatment routines.