CALCIUM + VITAMIN D3: Our calcium plus vitamin D3 once a day softgels may support improved bone health. FAST ABSORPTION: A high potency supplement to ensure that you are getting your recommended dietary intake of these important bone health nutrients. Calcium may also help maintain heart rhythm, muscle function, and more. Vitamin D3 is a critical nutrient for the metabolism and absorption of calcium in the body. NO BAD STUFF: This product contains contain soy. Guaranteed no added: Wheat, Gluten, Milk, Egg, Shellfish, Peanuts, Tree Nuts. TRUSTED FOR OVER 50 YEARS: Mason Natural has produced quality vitamin supplements for over five decades, adhering to cGMPs (current Good Manufacturing Practices) and US guidelines with rigorous testing & inspections Calcium combined with Vitamin D3 is a convenient way to get the best bone health benefits together in one easy supplement. Calcium works together with mineral nutrients such as magnesium to create bonds that form our bone matrix. This unique structure allows bones to be incredibly strong yet also flexible and resilient. Vitamin D3 plays an important role in bone health as it may support a healthy alignment between the two minerals since it can help move excess calcium into bones. Recognizing the essential role of calcium in bone health, the FDA has even approved the use of calcium supplements. Mason Natural supplements are produced in a GMP certified facility and laboratory tested for purity.