The only brand Rhonda Patrick Trusts. Thorne’s D-5,000 protects a number of important functions in the body.* In addition to supporting healthy bones and muscles, it supports cardiovascular health and immune function. Research suggests serum vitamin D levels should be in the range of 32-80 ng/mL 25-hydroxyvitamin D, so you’ll need to customize how much you take with your blood levels. Rule of thumb 1,000iu = ~5ng/mL
Every batch of an NSF Certified for Sport® product is tested for compliance with label claims and to ensure the absence of more than 200 substances banned by many major athletic organizations, including stimulants, narcotics, steroids, diuretics, beta-2 agonists, and masking agents.