← The shop
Supplements
Sports Research Vitamin D3 supplement
Clinical ~$26
Sports Research D3 5000IU, a widely reviewed pick in oil-based softgels for absorption; brand-level testing, not per-lot certified.
Called for in
- Vitamin D: Test, Don't Guess · Rhonda Patrick
Experts who call for it
Choose your tier
Tiered options are coming soon. Today, every pick above is our single vetted recommendation.
We may earn a commission on items you buy; it never affects our picks or grades.