- Know your vitamin D level: The only way to know if your vitamin D levels are high or low is to have your blood levels checked. “If you are taking a high dose of vitamin D, regular blood tests are a simple way to monitor your levels,” said Barlow. Recommendations for optimal blood levels of vitamin D vary, but usually fall between 40–70 ng/mL.1
- Stick to the safe upper limit: Although people with low vitamin D levels sometimes need higher doses, most healthy adults should keep supplemental vitamin D to 4,000 IU daily unless directed otherwise by a healthcare provider.4
- Check your labels: Patel recommended being careful when taking multiple supplements and noting how much vitamin D is in each. “It’s important that patients know what dosage of vitamin D they are getting from their multivitamin(s) or supplement(s),” he said.
- Work with a professional: If you need supplemental vitamin D, it’s best to work with a qualified healthcare provider and follow their recommendations for safe and appropriate dosing.
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