Country Life High Potency Vitamin D3 10,000 IU provides powerful support for bone, dental, and immune health.* Sourced from sustainable lanolin—not fish liver oil—this formula helps the body absorb calcium to maintain strong bones and teeth while also supporting healthy colon function.* Each softgel is delivered in a base of medium chain triglycerides (MCT) to optimize absorption. This high-strength D3 is ideal for individuals with greater vitamin D needs, but should be used only as directed by your healthcare provider.