3003 - Medicaments (excluding goods of heading 3002, 3005 or 3006) consisting of two or more constituents which have been mixed together for therapeutic or prophylactic uses, not put up in measured doses or in forms or packings for retail sale:

This HTS category, 3003, encompasses medicaments that are not put up for retail sale and are composed of two or more mixed constituents intended for therapeutic or prophylactic purposes. It specifically excludes goods classified under headings 3002 (which covers human blood, animal blood, antisera, vaccines, toxins, and cultures of micro-organisms), 3005 (which includes dressings, surgical bandages, etc.), and 3006 (which relates to standardized medicinal preparations). The key characteristic of goods within 3003 is their bulk preparation for further formulation or packaging, rather than direct consumer use.

Unlike sibling categories at the root level of the HTS, which cover a vast array of products from live animals to mineral products, 3003 is firmly situated within Chapter 30, dedicated to pharmaceutical products. This means its primary distinction from other HTS chapters lies in its focus on medicinal preparations for health applications. Within Chapter 30, it is differentiated from headings like 3002 by its composition of mixed constituents rather than single biological products, and from 3005 and 3006 by its lack of readiness for retail or specific medical use (e.g., bandages, surgical materials).

The subcategories within 3003 provide further specificity based on the active ingredients present in these bulk medicaments. Subheadings differentiate between those containing penicillins or streptomycins, other antibiotics, hormones or derivatives of heading 2937, and antimalarial active principles. The residual "Other" subheadings are for medicaments not falling into the specifically enumerated categories, requiring careful analysis of their active pharmacological components to ensure correct classification.