8⃣- An endoscopy procedure does not break the fast because it does not remain in the stomach, unlike eating and drinking. However, if lubrication or any form of

__ 9⃣- Using toothpaste does not invalidate the fast, as long as one does not intentionally swallow it. __ 🔺Final note: With regards to these matters of differing, especially those where the evidences are strong on both sides, a Muslim should tread the safest path and delay what he needs of them until after breaking his fast. But if that is too difficult, or delaying it would cause him harm, then there's no blame on him.