3004.20.00.20 - Erythromycin, singles or in combination with other antibiotics

This classification covers medicaments containing erythromycin, whether as the sole active ingredient or in combination with other antibiotics. These products are intended for therapeutic or prophylactic purposes and are presented in measured doses or in forms suitable for retail sale. The key characteristic for this classification is the presence of erythromycin as a component, distinguishing it from other antibiotic-containing pharmaceuticals.

It is important to differentiate this category from its sibling, HTS 3004.20.00.30, which specifically covers medicaments containing tetracycline. While both fall under the broader umbrella of antibiotics, the specific antibiotic active ingredient dictates the correct classification. Therefore, if a medicament's primary or sole antibiotic component is erythromycin, it falls under 3004.20.00.20, whereas those containing tetracycline are classified under 3004.20.00.30.

As this is a leaf node in the HTS, there are no further subdivisions under this specific code. Classification at this level is determined by the presence of erythromycin, its formulation into measured doses or retail-ready packaging, and its intended therapeutic or prophylactic use. Examples include prescription oral suspensions, topical creams, and injected solutions where erythromycin is the specified antibiotic.