3004.10.50.45 - Combination antibiotics

This HTS category, 3004.10.50.45, specifically covers combination antibiotic preparations. These are pharmaceutical products containing two or more active antibiotic ingredients, or an antibiotic combined with other therapeutic agents, where at least one of the components is a penicillin or a derivative thereof with a penicillanic acid structure, or a streptomycin or its derivative. The critical defining factor is the presence of these specific antibiotic classes in a combined formulation, intended for therapeutic or prophylactic uses and presented in measured doses or retail packaging.

Within the broader heading for medicaments containing penicillins or streptomycins, this "Other" subcategory functions as a residual classification. It encompasses combination antibiotics that do not fall into any more specific subdivisions, if such existed. The primary differentiator from other potential categories at this level would be the *combination* aspect. For instance, a single-agent penicillin preparation would be classified elsewhere, as would non-antibiotic pharmaceutical combinations.

As this classification node is a leaf node, it has no further subcategories. Therefore, classification at this level relies on confirming that the product meets the criteria of containing penicillins or streptomycins in a combined formulation and is intended for therapeutic or prophylactic use, put up in measured doses or retail sale forms. Examples include fixed-dose combinations of amoxicillin and clavulanic acid, or piperacillin and tazobactam, presented for patient administration.