Can I drink apple cider vinegar while fasting?

Last reviewed · Jun 29, 2026 · Not medical advice
Quick answer

A small amount of diluted apple cider vinegar is a gray-area practical fasting choice, not a required fasting tool.

Step by step

01 Dilute it if you use it.
02 Avoid gummies or sweetened versions.
03 Stop if it irritates your stomach.

The longer answer

Plain vinegar has few calories, but gummies and sweetened drinks are different. Avoid harsh amounts, and do not use vinegar to force through symptoms.

Tip

You do not need apple cider vinegar to fast well.

Common mistake

Thinking vinegar cancels out calories or overeating.

Track in the app

Track the drink or first meal, fasting duration, hunger, energy, and whether you completed the planned fast.

Safety note
Educational only. People who are pregnant, breastfeeding, under 18, have diabetes, take glucose-affecting medication, have a history of eating disorders, or feel unwell should speak with a qualified clinician before fasting.

Related questions

Free on the App Store

Stop googling. Start tracking.

Fast Goblin answers the timing questions automatically — end times, windows, and streaks in one place.