Many words commonly used in medicine come from Latin. The Rx is the abbreviation of “recipo” meaning, “take”. The doctor is giving you a recipe for your cure and he wants you to take it! If you look at a doctor’s prescription carefully, you will find that a line runs across the foot of the letter R. This, I understand, is actually the symbol of the Roman god of medicine, Jupiter. All medicines come under his protection. That’s understandable, I guess. Given the illegible manner in which some doctors write their prescriptions, we need all the protection we can get!