From the article:<p>> <i>"Supplementation of riboflavin and/or biotin is likely to be beneficial in a subset of Parkinson's disease patients, in which gut dysbiosis plays pivotal roles,"</i><p>From <a href="https://en.wikipedia.org/wiki/Riboflavin" rel="nofollow">https://en.wikipedia.org/wiki/Riboflavin</a><p>> <i>Best sources of riboflavin: Beef liver, Chicken liver, Whey protein powder, Almonds</i><p>> <i>People at risk of having low riboflavin levels include alcoholics, vegetarian athletes, and practitioners of veganism.</i><p>From <a href="https://en.wikipedia.org/wiki/Biotin" rel="nofollow">https://en.wikipedia.org/wiki/Biotin</a><p>> <i>Best sources of biotin: Chicken liver, Beef liver, Eggs, Peanuts, Sunflower seeds, Pork chop</i><p>Offered without comment.