Mason Natural Vitamin D3 1000 IU (25 mcg) provides essential daily support for calcium absorption, bone strength, muscle and immune functions Each easy-to-swallow softgel delivers 1000 IU of Vitamin D3 (cholecalciferol), a highly bioavailable form of Vitamin D that helps the body efficiently absorb calcium and phosphorus—two minerals vital for maintaining strong bones and teeth. In addition, Vitamin D3 contributes to normal muscle performance and immune system function by promoting the activity of immune cells such as T-lymphocytes (T-cells). While the body naturally produces Vitamin D from sunlight exposure, modern indoor lifestyles and limited sun exposure can make it difficult to maintain optimal levels. Supplementing daily with Mason Natural Vitamin D3 helps fill this nutritional gap and supports long-term wellness for adults 18 and older. Each softgel is formulated with highly refined fish oil for enhanced absorption. Our clean, carefully crafted formula contains no added milk, eggs, gluten, peanuts, wheat, shellfish, tree nuts, or artificial preservatives, and is made with premium quality ingredients you can trust. For more than 50 years, Mason Natural has been committed to producing high-quality vitamins and supplements that meet current Good Manufacturing Practices (cGMPs) and U.S. quality standards. Every product undergoes rigorous testing and inspection to ensure purity and potency. Support your bone, muscle, and immune functions every day with Mason Natural Vitamin D3 1000 IU—a simple and effective way to help your body stay strong and balanced.

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. CLEAN INGREDIENTS: Contains highly refined fish oil and soybean. No added milk, eggs, gluten, peanuts, wheat, shellfish, tree nuts, or artificial preservatives. BENEFITS: Known for supporting calcium absorption in the body while also supporting normal bone, muscle and immune functions. SPECIALLY FORMULATED: Each pill delivers 1000 IU (25 mcg) of Vitamin D3 per softgel. DAILY SUPPORT: Adults 18 take one softgel daily, preferably with food, as a dietary supplement to naturally support calcium absorbtion.