The fasting answer card people need in the moment.
Clear guidance for drinks, sweeteners, supplements, medications, tiny calories, modified fasting, and what to eat when the window opens.
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Coffee, lemon water, apple cider vinegar, stevia, creatine, pre-workout, medications, oils, and first-meal choices get a clear answer.
Black coffee
Black coffee is very low calorie and commonly used during intermittent fasting.
Skip sugar, milk, cream, collagen, and flavored syrups until the eating window.
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Search all decisionsWater
Okay during a clean fast
Sparkling water
Usually fine if unsweetened
Black coffee
Likely okay for fasting
Unsweetened tea
Likely okay if unsweetened
Electrolytes
Okay when zero sugar
Lemon water
Small splash is usually okay
Diet soda
Calorie-free, but appetite may change
Sugar-free gum
Tiny calories, possible appetite trigger
Coffee with cream
Breaks a clean fast
Bone broth
Breaks a strict fast
Protein shake
Best for the eating window
Eggs
Strong first-meal option
Apple cider vinegar
Tiny calories, but not a strict clean fast
Stevia
Usually calorie-safe, behavior can vary
Monk fruit sweetener
Usually fine by calories
Sucralose
Calorie-free, but not always appetite-free
MCT oil
Breaks a clean fast
Coconut oil
Breaks the fast
Creatine
Plain creatine is usually okay by calories
BCAAs
Breaks a strict fast
Collagen powder
Breaks a fast
Pre-workout
Depends on the label
Zero-sugar energy drink
Usually calorie-light, stimulant-heavy
Vitamins
Usually tiny calories, timing matters
Multivitamin
Better with the eating window for many people
Fish oil
Small, but still oil calories
Medications
Take medication as prescribed
Medication that says take with food
Follow the label, even if it ends the fast
Ibuprofen
Medication first, stomach safety second
Metformin
Do not adjust diabetes medication for fasting alone
Gummy vitamins
Usually breaks a clean fast
Fiber supplement
Depends on fiber type and sweeteners
Chia water
Breaks a fast
Bulletproof coffee
Breaks a clean fast
Alcohol
Breaks the fast and is risky fasted
Kombucha
Usually breaks a clean fast
Pickle juice
Usually low calorie, high sodium
Apple
A good eating-window food
Cucumber
Low calorie, but still food
Cinnamon
A pinch is usually fine
Toothpaste
Fine if you do not swallow it