Do Tic Tacs break a fast?

Regular Tic Tacs are mostly sugar and can break a fast if you eat several; sugar-free mints are the safer choice.

How many sugar-free mints can I have while fasting?

One or two are negligible; a whole tin starts to add up.

Do mints affect ketosis?

Sugar-free mints do not; sugar mints can.

Will mints make me hungry while fasting?

The sweet taste can stimulate appetite in some people; use them sparingly if so.

Does Sugar-Free Mints Break a Fast?

Reviewed by the FastTrack team · Updated June 2026

Short answer: No

Sugar-free mints do not break a fast. Each mint has roughly one to two calories from sugar alcohols, which is negligible and will not raise insulin or end your fast.

Calories	~1-2 kcal per mint
Breaks a weight-loss fast?	No
Breaks ketosis?	No
Breaks autophagy?	No
Insulin impact	Negligible

Why sugar-free mints are fast-safe

A sugar-free mint contains only a calorie or two, sweetened with sugar alcohols rather than sugar. That is too little to provoke an insulin response or break a fast, so a mint to freshen your breath is fine during a fasting window.

Sugar mints and quantity

Regular sugar mints and many flavored hard candies do contain enough sugar to break a fast. And while one or two sugar-free mints are nothing, eating a whole tin will start to add up, both in calories and in the appetite the sweet taste can trigger.

How much is safe

One or two sugar-free mints are negligible during a fast; a whole tin starts to add up.

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Frequently asked questions

Do Tic Tacs break a fast?: Regular Tic Tacs are mostly sugar and can break a fast if you eat several; sugar-free mints are the safer choice.
How many sugar-free mints can I have while fasting?: One or two are negligible; a whole tin starts to add up.
Do mints affect ketosis?: Sugar-free mints do not; sugar mints can.
Will mints make me hungry while fasting?: The sweet taste can stimulate appetite in some people; use them sparingly if so.