The term "over counter" refers to medications or products that are available without a prescription and can be purchased directly from a pharmacy or store. However, there are several synonyms that can be used to describe such products, including non-prescription, off-the-shelf, OTC and non-Rx. Non-prescription is a broad term that includes any medication or product that can be purchased without a prescription. Off-the-shelf refers to products that are available for immediate purchase and do not require any special order or preparation. OTC is an abbreviation for over-the-counter and is a common term used to describe non-prescription medications. Lastly, non-Rx is a term used in the medical field to describe medications that do not require a prescription.