Optimal Timing for Vitamin D3 Supplementation

Practical Implementation

• Taking vitamin D3 with the largest meal of the day, which contains fat, ensures maximum absorption and better compliance through habit formation with regular meals, according to the American Heart Association, as published in Circulation Research 1
• Vitamin D has a remarkably long half-life of 2 weeks to 3 months and is stored in adipose tissue, which is why daily dosing isn't strictly necessary from a physiological standpoint, as noted in Circulation Research 1
• Daily or weekly dosing with meals remains the most practical approach for maintaining adequate vitamin D levels, as recommended by the American College of Cardiology, with moderate evidence supporting this approach 1, 2