The phrase "without a prescription" is often used to describe medication that is obtained without a doctor's authorization. However, there are several synonyms that can be used to describe this term. These include "over-the-counter," "non-prescription," "OTC," or "unrestricted." These words are often used interchangeably and denote medications that can be purchased without the need for a prescription from a physician or licensed medical professional. It is important to note, however, that while these drugs do not require a prescription, they should still be used with caution and only in accordance with their recommended dosages and instructions.