Over-the-counter drug (OTC) encyclopedia analysis: definition, characteristics and common products

The first paragraph: content summary and structure
Over-the-counter drugs (OTC) refer to drugs that can be purchased in pharmacies or supermarkets without a doctor's prescription. They are mainly used to treat minor illnesses or relieve symptoms, such as colds, headaches, indigestion, etc. Its core features include high safety, simplicity of use, and clear label instructions. This article will start fromDefinition and Classification,Precautions when purchasing,Common OTC productsandfair use recommendationsFour parts are developed to help readers scientifically understand OTC drugs.

Paragraph 2: Definition and Classification
Over-the-counter drugs are divided intoClass A OTC(Red label, pharmacist guidance required) andClass B OTC(Green label, higher safety, can be purchased by yourself). For example, the fever-reducing drug acetaminophen (such as Tylenol) and the anti-allergic drug loratadine (such as Claritan) are both OTC. my country’s Drug Administration Law clearly requires that OTC drugs undergo long-term clinical verification to ensure controllable side effects. Consumers can quickly identify it through the "OTC" logo on the packaging.

Paragraph 3: Precautions for purchase and use
There are three points to note when purchasing OTC drugs:Selecting drugs according to symptoms(If you have stomach pain, choose omeprazole enteric-coated tablets),View validity period,Avoid duplication of medications(For example, multiple cold medicines may contain the same ingredients). In addition, special groups (pregnant women, children) should consult a pharmacist. Take ibuprofen as an example. Although it can relieve pain, long-term use may damage the stomach, so it must be used strictly according to the dosage instructions.

Paragraph 4: Common OTC products and manufacturers

Drug name	Efficacy	Manufacturer
999 Ganmaoling	Relieve cold symptoms	China Resources Sanjiu
Jiangzhongjianweixiaoshi tablets	Aid digestion	Jiangzhong Pharmaceutical
Dacnin (miconazole nitrate)	Antifungal	Xi'an Yangsen

The above products have all been reviewed by the State Food and Drug Administration, but individual differences should be noted, and those with allergies should use with caution.

Paragraph 5: Summary and reminder
Although OTC drugs are convenient, they are not "zero risk". Fair use is subject toFour principles: Clarify symptoms, read labels, do not exceed dosage, and be alert to adverse reactions. If the medication is ineffective or worsens after 3 days, you should seek medical treatment in time. The State Food and Drug Administration recommends purchasing through formal channels to avoid counterfeit products. Health is no small matter, and scientific medication is the key.

Citing sources
1. "Drug Administration Law of the People's Republic of China" (2021 revised edition)
2. National Medical Products Administration (NMPA) OTC Drug Catalog
3. World Health Organization (WHO) "Consumer Guidelines for Self-Medication"
4. Public instructions of the manufacturer (China Resources Sanjiu, Jiangzhong Pharmaceutical, etc.)