About this item Natural Plant Calcium: AlgaeCal Plus is the worldҳ #1 calcium. Itҳ sourced from a rare ocean algae that naturally contains all 13 clinically supported bone-building minerals, including magnesium, boron, copper, manganese, silicon, zinc, and more. With Strontium Boost: Human studies show that Strontium Boost naturally accelerates the bone-building process. Added Vitamins: Along with the 13 clinically supported minerals for bone strength, weҶe included vitamin K2-7, C, and D3, plus extra boron and magnesium, to complete the formula and ensure the AlgaeCa minerals get absorbed directly to your bones. Increased Bone Density: AlgaeCal Plus and Strontium Boost are guaranteed to increase bone mineral density on DEXA scans within 6 months. Clinical studies also show you can expect to see increases each year. Vegetarian Capsules: A whole food product, our vegetarian capsules are made from naturally-occurring algae, non-GMO and free from dairy, soy, and gluten. We manufacture our supplements in a cGMP certified FDA inspected facility here in the USA.