Boron is a biologically active trace mineral that affects calcium, magnesium, and phosphorus metabolism.* Boron is known to support bone strength and structure.* Natural color variation may occur in this product. Take 1 capsule daily with a meal. As a family-owned company since 1968 — NOW produces high-quality natural products at prices everyone loves. We are a respected leader in the natural products industry, with a mission to provide value in products and services that empower people to lead healthier lives.