Coggeshall JC, Heggers JP, Robson MC, et al. Biotin status and plasma glucose in diabetics. Ann N Y Acad Sci 1985;447:389-92.

However, there’s limited evidence to support this particular use for biotin because most people aren’t deficient in biotin — despite its popularity as a hair, skin, and nails vitamin ( 12). Scheinfeld, N., Dahdah, M. J., and Scher, R. Vitamins and minerals: their role in nail health and disease. J Drugs Dermatol. 2007;6(8):782-787. View abstract. Wallace, J. C., Jitrapakdee, S., and Chapman-Smith, A. Pyruvate carboxylase. Int J Biochem.Cell Biol. 1998;30(1):1-5. View abstract. AlbarracinCA, et al. (2008). Chromium picolinate and biotin combination improves glucosemetabolism in treated, uncontrolled overweight to obese patients with type 2diabetes. [Abstract]. Children: Biotin is likely safe when taken by mouth. It's been used safely in doses of 5-25 mcg daily.Trüeb, R. M. (2016). Serum biotin levels in women complaining of hair loss. International journal of trichology. Retrieved February 24, 2022, from https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4989391/ Most people can take biotin supplements without experiencing any side effects. However, it is possible for people to take them and experience 13: Shils ME, Olson JA, Shike M, Ross AC, eds. Modern Nutrition in Health and Disease. 9th ed. Baltimore, MD: Williams & Wilkins, 1999. Biotin. Linus Pauling Institute. (2022, January 3). Retrieved February 24, 2022, from http://lpi.oregonstate.edu/mic/vitamins/biotin#deficiency

Eakin RE, Snell EE, and Williams RJ. Concentrationand assay of avidin, injury-producing agents in raw egg white. J Biol Chem. 1941;(40):535-43. Taking too much biotin from supplements may cause falsely high or low thyroid hormone or vitamin D levels. For this reason, it’s important to notify your healthcare professional prior to having bloodwork done if you’re taking biotin or a hair, skin, and nails supplement ( 1, 13). How long does a biotin supplement stay in your system? Biotin can support healthy skin: biotin helps your body to maintain healthy skin and normal mucus (natural body oil) production. Specifically, daily use of supplements that contain biotin has been linked to inaccurate readings for lab tests used to measure levels of thyroid hormone. This has resulted in some biotin users receiving test results that falsely indicate hyperthyroidism or Graves' disease.

Does biotin only potentially help with hair growth?

Kwok JS, Chan IH, Chan MH. Biotin interference on TSH and free thyroid hormone measurement. Pathology. 2012;44(3):278-80. View abstract. Eggs are a good source of biotin, a complex B vitamin that helps your body turn nutrients into energy and provides a variety of health benefits. (Photo Credit: Moment / Getty Images) Scheib N, Bauersachs D, Pogorelov D, et al. Biotin interference can cause false-negative specific IgE results in patients with anaphylaxis. J Allergy Clin Immunol Pract. 2022;10(9):2459-2462.e2. View abstract.

Ozand, P. T., Gascon, G. G., Al Essa, M., Joshi, S., Al Jishi, E., Bakheet, S., Al Watban, J., Al Kawi, M. Z., and Dabbagh, O. Biotin-responsive basal ganglia disease: a novel entity. Brain 1998;121 ( Pt 7):1267-1279. View abstract.Pure Encapsulations is a trusted supplement brand among healthcare professionals. The ingredients and products undergo rigorous testing by a number of third-party labs, such as Silliker, Eurofins, Covance, and Advance Laboratories. If you suspect biotin deficiency, speak with a healthcare professional about confirming it with a blood test. What happens if you take too much biotin supplement? There are also small amounts of biotin in plain yogurt, oatmeal, whole wheat bread, bananas, apples and other types of fresh fruit.