 [ Symptoms ] what are the symptoms of bipolar disorder [ Disease ] although biotin does play a role in amino acid metabolism there are no studies that i can find that show taking biotin decreases lactic acid production if someone is deficient in biotin it could limit performance or muscle formation but that is unlikely if you are getting enough through diet you probably do not need to supplement for more on lactic acid and biotin see these articles exercise and lactic acidosis biotin supplement guide