Antibiotics — HTS 2941
Antibiotics
Chapter 29 › Heading 2941
2026 HTS Rev 19 Synced Rules verified Operational
Written to help non-specialists understand this page. Rates, dates, and legal facts come from the official records above and on the linked source.
HTS heading 2941 is a four-digit product category for antibiotics. It generally groups antibiotic substances and preparations that are chemically defined or identifiable by their antibiotic character, rather than grouping products merely because they are used to treat infections. The heading can cover active pharmaceutical ingredients and certain antibiotic preparations, subject to the tariff schedule’s wording and exclusions.
To reach the correct eight-digit HTSUS code, start with the product’s actual composition and form. Read the subheadings and statistical provisions under heading 2941, which commonly distinguish products by the antibiotic substance or type, and sometimes by whether the item is a mixture, preparation, or other form. Confirm the product’s chemical identity, ingredients, concentration or formulation, and presentation; classification may require customs-broker or laboratory review when the wording is technical or the product contains multiple active substances.
What to check
- Identify the exact antibiotic substance using its accepted chemical, generic, or INN name, and compare it with the tariff text.
- Check whether the shipment is a single chemically defined substance, a mixture, or a finished preparation; do not classify by marketing name alone.
- Review the product’s formulation, dosage or presentation, purity, and packaging against the relevant 8-digit statistical provisions.
- Read the legal notes, exclusions, and any applicable chapter or section guidance before choosing a code.
- Keep specifications, safety data sheets, certificates of analysis, and formulation records, and ask a customs broker to review uncertain classifications.
HTS heading 2941 summary
Antibiotics is a 4-digit product category containing 3 published product-code lines in this snapshot. A heading does not carry one universal duty rate; classification must be narrowed to the line matching the product facts.
How to find your code in this category
A heading is a product category. To get the exact duty, narrow from this 4-digit heading to a sub-category (usually by material), then open the 8-digit code that matches your product.
Open any code in the tables below to see its exact duty rate, a duty calculator (enter your shipment value → estimated duty and landed cost), the rate-change history chart, and the country-by-country breakdown (including Section 301/232 add-on duties).
Why you have to click in: a single category can contain products with very different duties. The rate depends on the specific product — its material and construction — and on the country of origin, and those only get pinned down at the 8-digit code level. That is why this page points you to codes instead of showing one rate for the whole category.
Sub-categories
| Code | Description |
|---|---|
| 2941.10 | Penicillins and their derivatives with a penicillanic acid structure; salts thereof |
| 2941.20 | Streptomycins and their derivatives; salts thereof |
| 2941.90 | Other |
Product codes & duty rates
👇 Each row is a specific product code — click a blue code to open its full page with exact duty rates by country, the rate-history chart, and a duty calculator. 👉
| Code | Description | General (MFN) | Special | Column 2 |
|---|---|---|---|---|
| 2941.30.00 👉 | Tetracyclines and their derivatives; salts thereof | Free | — | 25% |
| 2941.40.00.00 👉 | Chloramphenicol and its derivatives; salts thereof | Free | — | 15.4¢/kg + 45% |
| 2941.50.00.00 👉 | Erythromycin and its derivatives; salts thereof | Free | — | 25% |
"Special" shows the free-trade-agreement rate; open a code to see exactly which countries qualify.
Common questions
What products fall under HTS heading 2941?
Antibiotics. To classify a specific item you must pick the matching sub-category and 8-digit code above; the right choice usually depends on the material and construction of the product.
How do I choose the right code within this category?
Start from the sub-categories (typically divided by material—for example cotton versus man-made fibers), then open the active 8- or 10-digit code that matches the product. When unsure, a licensed customs broker or a CBP binding ruling can confirm the classification.
Reference information only, not customs, legal, or classification advice. Confirm the current code and rate against the official HTS before you import.