Pure Encapsulations Strontium (Citrate) is a hypoallergenic dietary supplement to support healthy bones. It may support osteoblast activity, vertebrae integrity, and hip bone health, while keeping osteoclast activity balanced. Free from wheat, eggs, tree nuts and peanuts, gluten, artificial colors, flavors, sweeteners, coatings and shellacs, GMOs, and unnecessary binders. 90 capsules.