Vitamin D Calculator | OmegaQuant
omegaquant.com › vitamin-d-calculatorUp to 4,000 IU per day of supplemental Vitamin D is considered safe and is set as the upper limit in this calculator. The calculation is only valid for body weights up to 125 kg (275 lbs). Due to the seasonal effect on Vitamin D blood levels, we also suggest testing once per season to adjust your supplementation.