Vitamin B2 is one of the 8 water-soluble B vitamins, meaning the body cannot store them. Riboflavin is destroyed by light and heat and in an alkaline medium. It is absorbed in the upper part of the small intestine, is increased with food and delayed on an empty stomach. Recommended dose 10 drops per day in water with food. The stated recommended dose can be changed as directed by your healthcare practitioner. Do not exceed this recommended dose. Consume within 3 months of opening. If pregnant or breastfeeding, consult your health care practitioner before using. This product should not be used as a substitute for a varied diet. Store in a refrigerator out of the reach of children.