Active Ingredient
APIपरिभाषा
The component of a drug product that produces the intended therapeutic effect. The active pharmaceutical ingredient (API) is what the drug does — everything else in the formulation (binders, fillers, coatings) are inactive ingredients (excipients).
उदाहरण
In Tylenol Extra Strength, the active ingredient is acetaminophen 500 mg per tablet. The remaining mass consists of excipients.
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