Protein powder (whey): does it break a fast?

Yes, it breaks the fast: one scoop (about 30 g) is about 100–130 kcal, and protein stimulates insulin. It can be a good way to break your fast, especially after training.

Approximate energy: ≈100–130 kcal

More questions

• Water (still or sparkling)
• Black coffee
• Yerba mate (unsweetened)
• Tea and herbal infusions, unsweetened
• Sweeteners (sucralose, stevia)
• Mate, coffee or tea with sugar or honey
• A splash of milk in your coffee
• Latte, flat white or cappuccino

General information; not a substitute for a health professional.