NOW - Boron 3 mg - 100 veggie Capsule(s) - NPN: NPN 80078188 -- Boron is a biologically active trace mineral that affects calcium, magnesium and phosphorus metabolism. Boron is known to support bone strength and structure. This 3mg dosage is our highest potency offering. By changing to glycinate mineral form and a veg capsule delivery, this product is now suitable for vegetarians and vegans.