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Drugs & Medications A to Z - Drugs.com
Drug Classification & Categories | Drugs.com
WebMD's A to Z Drug Database
Drugs and Medications A-Z - Healthline
Drug Classes and Medication Classification - Verywell Health
Drug Classes: Browse Medications by Classification - GoodRx
General Drug Categories | FDA - U.S. Food and Drug Administration
Over-the-Counter (OTC) Medications - Drugs.com
Medicines - MedlinePlus
The 10 Types of Drugs and Their Characteristics - Muy Salud