Do gummy vitamins break a fast?

Yes, gummies contain sugar and calories. Choose tablets or capsules while fasting.

Should I take vitamins with food or while fasting?

Water-soluble vitamins are fine anytime; fat-soluble ones absorb better with a meal.

Do vitamins raise insulin?

No, micronutrients do not meaningfully raise insulin.

Can vitamins cause nausea on an empty stomach?

Some can; if so, take them with your first meal.

Does Multivitamins Break a Fast?

Reviewed by the FastTrack team · Updated June 2026

Short answer: No

A multivitamin does not meaningfully break a fast. The vitamins and minerals it contains have negligible calories and do not raise insulin, though fat-soluble vitamins are absorbed better with food.

Calories	~0-5 kcal
Breaks a weight-loss fast?	No
Breaks ketosis?	No
Breaks autophagy?	No
Insulin impact	Negligible

Why a multivitamin is fast-safe

A standard multivitamin delivers micronutrients, not macronutrients. It has essentially no calories and does not trigger an insulin response, so metabolically it does not break a fast. Many people take one during their fasting window without issue.

Two practical caveats

First, fat-soluble vitamins like A, D, E, and K absorb much better with dietary fat, so you get more from them taken with a meal. Second, gummy multivitamins are different: they contain sugar and calories and can break a fast. Tablets and capsules are the fasting-friendly form.

How much is safe

One tablet or capsule during your fast is fine; if it causes nausea on an empty stomach, take it with your first meal.

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Frequently asked questions

Do gummy vitamins break a fast?: Yes, gummies contain sugar and calories. Choose tablets or capsules while fasting.
Should I take vitamins with food or while fasting?: Water-soluble vitamins are fine anytime; fat-soluble ones absorb better with a meal.
Do vitamins raise insulin?: No, micronutrients do not meaningfully raise insulin.
Can vitamins cause nausea on an empty stomach?: Some can; if so, take them with your first meal.