High-dose boron and riboflavin supplement from Life Extension. Each capsule contains 25mg of riboflavin and 3mg of boron, providing essential nutrients for the human body. Life Extension's boron is characterized by its good bioavailability and is suitable for a vegan diet. Life Extension's boron capsules undergo quality and purity testing in independent laboratories. No unwanted additives, gluten-free, and non-GMO. Improve your health with this important nutrient that plays a role in many processes of the human body.