In a drug product, what are excipients?

• A. Non-drug/inert substances included with the active ingredient
• B. The patient information leaflet
• C. The manufacturing plant location
• D. The primary active chemical ingredient

Answer: (A)

Excipients are non-drug substances added with the active ingredient to make a usable drug product. They don’t have therapeutic activity themselves but play key roles in formulating, processing, storing, and delivering the medicine. Examples include binders and fillers that help form tablets, disintegrants that aid dissolution, lubricants that ease manufacturing, and stabilizers that protect the drug from degradation. The patient information leaflet is packaging material, not part of the formulation. The manufacturing plant location refers to where the product is made, not the ingredients. The primary active chemical ingredient is the medicine itself, while excipients are the inactive components that support delivery and stability. So the description that fits best is non-drug substances included with the active ingredient.