Brushing your teeth does not break your fast, according to scholars. Mr Hassan says that sometimes people who are fasting erroneously believe that the slight minty taste from toothpaste is enough to break the fast.
Are you allowed to brush your teeth while fasting Islam?
By NIda Sohail. Brush your teeth while you fast during Ramadan, but be careful that you don't swallow anything. You can use any fluoride toothpaste, but make sure you don't gulp it down.
Will brushing your teeth break a fast?
Some toothpastes may contain artificial sweeteners. Whilst these don't have any calories as such, they can trigger an insulin reaction, which is counterproductive to one of the main benefits of intermittent fasting. So we advise, keep brushing your teeth but be careful of swallowing any of the toothpaste itself!