Using Toothpaste While Fasting... Thank you for this website. I have learnt a lot from your answers. Could you tell me if using toothpaste on a toothbrush in order to clean the teeth is prohibited during fasting in the month of Ramadhan ? Thank you for your answer M. A. Bari, UK Reply JazaakAllah for your encouraging remarks on our website. Although using toothpaste to clean one's teeth is neither 'eating' nor 'drinking', and therefore its use, while in a fast, cannot be termed as prohibited, however using toothpaste is not only likely to leave a taste in one's mouth but may also be unintentionally swallowed while brushing the teeth. I would, therefore prefer to brush my teeth without putting toothpaste on the brush, while in a fast. It should remain clear that this is a matter of one's personal preference only. You may, if you like, opt to brush your teeth with toothpaste. Unless a person starts eating the toothpaste, which obviously no person in his senses would, using toothpaste - with due care - to clean one's teeth cannot be termed as prohibited in the Shari`ah . I hope this helps. In case any aspect of my answer remains unclear, please feel free in writing back to me at your own convenience. May the Almighty guide us all to the path of His liking. Regards The Learner