Final answer:
Over-the-counter (OTC) drugs do not require a doctor's prescription and are considered safe enough for use without a doctor's supervision. The amount of OTC drugs that can be sold may vary depending on the country and its regulations.
Step-by-step explanation:
Over-the-counter (OTC) drugs are drugs and combinations that do not require a doctor's prescription. The FDA has approved approximately 800 ingredients for OTC drugs, which are used to create more than 100,000 OTC drug products. These drugs are considered safe enough for use without a doctor's supervision.
However, the specific amount of OTC drugs that can be sold may vary depending on the country and its regulations. In the United States, for example, there are certain limits and regulations set by the FDA for the sale of OTC drugs.
It's important to note that OTC drugs should be used according to the recommended dosage and instructions provided on the packaging, and if there are any concerns or questions, it's always best to consult a healthcare professional.