10/23/2025
When sunlight fades, so does your vitamin D.
From October through March, most people can’t make enough naturally — even if they spend time outdoors.
Recent research from the University of Surrey and Quadram Institute Bioscience (UK) found that vitamin D₂ can actually lower D₃ levels.
That’s why the form matters. D₃ + K₂ work together to help your body absorb calcium and guide it into your bones — not your arteries.
Most adults do well with 5,000 IU daily or every other day, taken with food.
Ask your doctor to check your vitamin D levels with annual labs.
💊 Vital Sun 5000 IU D₃ + K₂ by Good Medicine
Rooted in Nature. Backed by Science.