“…15,45 Furthermore, an increase in nail thickness, as seen following biotin therapy, has been correlated with a proportional increase in linear nail growth. 46 Biotin is also reported to strengthen hair and retard hair loss, theoretically acting by altering the matrix proteins in the hair shaft. 47 Other medications cited in the literature associated with faster nail growth include levodopa, 48,49 benoxaprofen, 50,51 calcium and vitamin D, 46 oral contraceptives, 52 and cysteine.…”