Without prescription refers to the purchasing and consumption of medication without the need for a medical prescription. There are various different synonyms for the term "without prescription," each with their own nuances. These include over-the-counter, non-prescription, non-Rx, OTC, and off-the-shelf. These synonyms are commonly used in the medical world and in advertising for medications that can be sold without a prescription. It's important to note that while these medications may not require a prescription, they should still be used carefully and with caution, as they can still have potential side effects and may interact with other medications. It's always recommended to speak with a healthcare professional before taking any new medications.