Does sucralose break a fast?
Calorie-free, but not always appetite-free
0-5 kcal
Maybe - use caution. Sucralose products are usually near zero calories, but some people notice stronger cravings after sweeteners.
It is unlikely to matter for calorie fasting, but it may not fit a strict clean fast or appetite-reset goal.
Label calories are usually negligible; the uncertainty is behavioral response, not energy intake.
Base tier: 60/100 for "Use caution". Item adjustment: +6 points for calories, nutrient signal, product variability, and safety caution. Final Fast Score: 66/100.
Keep it occasional during fasting hours and move it to the eating window if it makes hunger louder.
The Fast Score is an editorial estimate of clean-fast strictness, not medical advice. Goals vary — if you fast for glucose, appetite, or medical reasons, follow your clinician.