Double Wood's Biotin with Collagen gummies (biotina de colágeno gomitas) Contains 200mg Collagen, 2,500mcg Biotin, 45% of Daily Zinc intake, 55% Daily Vitamin C intake, and 33% Daily Vitamin E intake. Double Wood Supplement's max strength gummy product contains 60 Collagen Biotin Chewable Gummies (not capsules) for Hair, Skin, and Nail health for Adults and Kids. Our product is Made in the USA, Gluten Free, and Non-GMO.