Natural Aids Vitamin D3 1000IU is a high-strength supplement containing 90 tablets designed to support immune health, bone strength, and muscle function. Each tablet provides 1000IU (25μg) of vitamin D3, essential for calcium absorption and overall wellbeing. Vitamin D3 (cholecalciferol) is crucial for maintaining healthy bones, teeth and muscles by helping the body absorb and utilize calcium effectively. This supplement is particularly beneficial for those with limited sun exposure or increased vitamin D needs. The 90-tablet supply offers a convenient way to maintain optimal vitamin D levels. The high-strength formula supports immune system function while contributing to normal blood calcium levels.