Medically reviewed by Jamie Johnson, RDN If you've recently started taking a new vitamin or supplement, you might wonder how long it takes for vitamins to work​ or when you’ll notice a difference. The ...

Women who might become pregnant should be especially cautious with vitamin A supplements or avoid them entirely .

For example, 3,000 IU of vitamin A (as retinol) is 900 mcg RAE. About 18,000 IU beta carotene, which is less potent than ...

While the effectiveness of vitamins and multivitamins is often debated, one crucial step is frequently overlooked: consulting your doctor. In fact, skipping that step is the #1 mistake people make ...

Trend alert! Split dosing, stretch dosing, skip dosing, microdosing Ozempic… People are finding creative ways to use ...

The expiration date on your vitamin bottle often doesn't reflect what you believe. If you're worried about supplements sitting in your cabinet for too long, here's what the experts think you should do ...

The best multivitamins for women help you shore up nutritional gaps at every stage of life, whether you're a mom-to-be seeking the best prenatal vitamin, or you're a woman over 50 who needs an option ...

Several medical conditions can affect the need for B12, as well as a vegan diet.

Kennedy’s decision to replace ACIP wholesale and the comments he has made about deviating from standard vaccine policymaking ...

Dosage of Vitamin D Needed To Achieve 35 to 40 ng/ml (90-100 nmol/L) Historically, 400 IU (10 ug) of vitamin D was recommended for better health because it closely approximated the amount of ...