MicroVitamin is an evidence-based supplement formulated by Dr Brad Stanfield, a Family Medicine doctor with 325,000+ YouTube subscribers. Every ingredient is included based on human randomized controlled trials, in bioavailable forms (methylated B-vitamins, glycinate minerals) at clinically supported doses. Manufactured in an FDA-registered, GMP-audited facility in the USA. Third-party tested for heavy metals and purity. The formula is updated as new evidence emerges.