Quick Answer
Use iHerb discount code KHQ339 at checkout.
Bone And Immune HealthVitamin SupplementSupports Bone Health Immune Wellness and MorePromotes Calcium Absorption in the BodyScience-Backed Quality Since 1969Get your "Sunshine Vitamin" with Swanson Higher Potency Vitamin D3! Vitamin D has received a lot of press by researchers and health professionals. It is best known for promoting bone immune and emotional health. Optimal levels of vitamin D are also associated with improved muscle strength and blood pressure maintenance.