MDBBTa medicine which can be bought without a prescription (=a written order from your doctor) 成药〔指不需处方就能买到的药〕SYN over-the-counter
Examples from the Corpus
patent medicine• Like a vile-tasting patent medicine, they appreciate the need for treatment, but find it hard to swallow.• Now, when I stopped at the Emporium, I looked at the patent medicine display first.