The term PHARMACY PURCHASE can be broken down into two crossword solutions: MEDICINE (8 letters) and DRUG (4 letters). A pharmacy purchase is the purchase of MEDICINE or drugs from a pharmacy. MEDICINE is a broad term that includes prescription and over-the-counter drugs, as well as other products used to treat illnesses and injuries. Drugs are substances that are used to treat, cure, prevent, or diagnose diseases and medical conditions. Pharmacies are regulated by the government and must adhere to strict guidelines when dispensing medications.