Do Gummy Vitamins Break a Fast? Yes

Reviewed by the FastTrack team · Updated June 2026
Short answer: Yes

Yes, gummy vitamins technically break a fast. A typical two-gummy serving has about 15 calories and 2 to 3 g of sugar, and some brands use four gummies with 45 calories and 7 g of sugar. For a weight-loss fast the effect is small; a strict fast is over.

Calories~15-45 kcal per serving
Breaks a weight-loss fast?Partial
Breaks ketosis?No
Breaks autophagy?Yes
Insulin impactSmall rise from the sugar

Why gummies count as food

A gummy vitamin is a small candy that carries vitamins. The base is glucose syrup, sugar and gelatin or pectin, so each serving brings real carbohydrate. Two gummies of a popular women's multi list 15 calories and 3 g of added sugar. That is small next to a meal, yet enough to raise insulin a little and break a fast defined by calories or done for autophagy.

Sugar-free gummies and better timing

Sugar-free gummies swap the sugar for maltitol or sorbitol, which still carry about 2 to 3 calories per gram and raise blood sugar a little. Many gummy multis also contain vitamins A, D, E and K, which are absorbed better with a meal. Taking your gummies with your first meal solves both problems at once. If you want a vitamin during the fast itself, tablets and capsules have essentially no calories.

How much is safe

Take gummy vitamins at the start of your eating window. On a weight-loss fast a single serving does little harm; on a clean or autophagy fast, wait until you eat.

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Frequently asked questions

How much sugar is in gummy vitamins?
Usually 2 to 3 g per two-gummy serving, and up to about 7 g for brands with a four-gummy serving. Check the label.
Do sugar-free gummy vitamins break a fast?
They have fewer calories, though sugar alcohols such as maltitol still add a little energy and a small blood sugar rise. Tablets are the cleaner choice.
Do gummy vitamins break ketosis?
Probably not. A serving has a few grams of sugar, which most people absorb without leaving ketosis, though several gummy supplements together add up.
When should I take gummy vitamins if I fast?
With your first meal. The fat in food also helps you absorb vitamins A, D, E and K.

Better choices while fasting