Which classification allows drugs to be purchased without a prescription?

Over-the-counter (OTC) medicines are classified as drugs that can be purchased without a prescription. This category includes medications that are deemed safe and effective for use without the supervision of a healthcare professional, thus allowing consumers to manage certain health conditions independently.

These medicines often address common ailments such as headaches, colds, and allergies, and are typically available in pharmacies, supermarkets, and other retail outlets. The regulatory framework ensures that OTC medications have an established safety profile for the general public, which is why they can be bought without the need for a doctor's authorization.

In contrast, other classifications such as prescription medicines require a healthcare provider's approval because they may have potential side effects, contraindications, or risks that necessitate professional oversight. Restricted medicines and controlled substances also fall under strict regulations and monitoring to prevent misuse or adverse reactions, highlighting the importance of professional guidance in their usage.