Can I take a multivitamin while fasting?

Q: Can I take a multivitamin while fasting?

Maybe - use caution. Better with the eating window for many people. The fasting issue is less about calories and more about absorption and stomach tolerance. If it makes you nauseous, take it with your first meal.

/ 100

Use caution

Better with the eating window for many people

0-15 kcal

Maybe - use cautionmedium confidenceSupplement-label evidence

Decision

Maybe - use caution. A standard multivitamin usually has minimal calories, but it can cause nausea and may include fat-soluble vitamins.

Reason

The fasting issue is less about calories and more about absorption and stomach tolerance.

Evidence

Supplement facts vary by brand; fat-soluble nutrients and minerals are often easier to tolerate with food.

How we calculate this value

Base tier: 60/100 for "Use caution". Item adjustment: +8 points for calories, nutrient signal, product variability, and safety caution. Final Fast Score: 68/100.

What to do

If it makes you nauseous, take it with your first meal.

Medical caution

Do not double-dose vitamins to make up for missed days unless a clinician says so.

References for this answer

Methodology

NIH Office of Dietary Supplements: Dietary Supplements for Exercise and Athletic Performance NIH Office of Dietary Supplements: Dietary Supplement Fact Sheets U.S. Food and Drug Administration: Dietary Supplements MedlinePlus, National Library of Medicine: Taking multiple medicines safely