Biotin 800 mcg plus Vitamin B Tablets, 100 ct, QC98638 Sale! This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. Biotin aids in cell growth and production of fatty acids. It is an essential nutrient for normal metabolism of carbohydrates, proteins and fats. No added sugar, yeast, preservatives, artificial colors or flavors, and gluten-free.