The primary natural sources from which drugs are compounded are roots, bark, sap, leaves, flowers, and seeds of plants, other natural sources include animal organs or organ cells secretions, and mineral sources. Synthetic drugs, such as sulfonamide, are made in a laboratory from chemical substances.
Most drugs are given chemical, generic, and trademark names. The generic name is shorter and simples and reflects the chemical fancily to which the drug belongs. The trade name is the most common way in which the drugs are known. Once a drug is registered with a brand name, only its legal owners can manufacture the drug.
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