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HSChapter 29
U.S. imports of antibiotics, not elsewhere specified (HS 294190) totaled $96.3M in April 2026, traded with 24 countries.
Importers of Antibiotics, Not Elsewhere Specified paid $12K in duties in April 2026 — an effective duty rate of 20% on $59K in dutiable value, based on actual customs collections rather than the published tariff schedule. Antibiotics, Not Elsewhere Specified imports of $96.3M in April 2026 ran 94% above the year-to-date monthly average of $49.6M.
Last updated: April 2026 dataAntibiotics not classified under the named headings for penicillins, streptomycins, tetracyclines, chloramphenicol, or erythromycin fall here, covering a chemically diverse range including aminoglycosides, natural antibiotics, and aromatic or modified-aromatic synthetic antibiotics. The US schedule subdivides the heading into five 10-digit lines — aminoglycoside antibiotics (2941901010), natural antibiotics NESOI (2941901050), aromatic or modified-aromatic antibiotics excluding natural (2941903000), other non-natural non-aromatic antibiotics (2941905000), and a residual NESOI line (2941906000) — making precise chemical characterization essential for correct entry. Italy leads US supply under this heading, followed by China and Denmark, a distribution that reflects both European fermentation expertise and Chinese bulk API capacity. Chinese-origin goods may be subject to Section 301 tariffs.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Classification among the five 10-digit lines turns on two axes: whether the antibiotic is natural (fermentation-derived) or synthetic, and whether it has an aromatic or modified-aromatic chemical structure. Importers should obtain a detailed certificate of analysis and, for novel compounds, consider requesting a binding ruling from CBP to avoid misclassification penalties.
Italy hosts several major fermentation-based pharmaceutical manufacturers with long-standing expertise in producing complex natural and semi-synthetic antibiotics, including glycopeptides and other specialty classes that fall outside the named headings. This industrial heritage positions Italian producers as preferred GMP-certified sources for high-value antibiotic APIs not easily sourced elsewhere.
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Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 2941903000 | AROMATIC OR MOD AROMATIC ANTIBIOTICS (EXC NATURAL) | $56.4M | -- | -- |
| 2941905000 | OTHER ANTIBIOTICS (EXC NAT,AROMAT AND MOD-AROMAT) | $33.3M | 20.05% | $12K |
| 2941901050 | NATURAL ANTIBIOTICS, NESOI | $5.2M | -- | -- |
| 2941901010 | AMINOGLYCOSIDE ANTIBIOTICS | $1.5M | -- | -- |
AROMATIC OR MOD AROMATIC ANTIBIOTICS (EXC NATURAL)
OTHER ANTIBIOTICS (EXC NAT,AROMAT AND MOD-AROMAT)
NATURAL ANTIBIOTICS, NESOI
AMINOGLYCOSIDE ANTIBIOTICS
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2941906000 | ANTIBIOTICS NESOI | $17.0M |
| 2941901010 | AMINOGLYCOSIDE ANTIBIOTICS | $1.2M |
ANTIBIOTICS NESOI
116.5K kg
AMINOGLYCOSIDE ANTIBIOTICS
41.9K kg
NUCLEIC ACIDS & SALTS; OTHER HETEROCYCLIC CMP, NES
HS 293499
HETEROCYCLIC COMP W NITROGEN HETERO-ATM ONLY NESOI
HS 293399
POLYPEPTIDE PROTEIN& GLYCOPROTEIN HORMONES &DERIV
HS 293719
CMPDS CONT AN UNFUSED PYRIDINE RING ETC NESOI
HS 293339
COMP WITH PYRIMIDINE OR PIPERAZINE RING, NESOI
HS 293359
LACTAMS (EXCLUDING 6-HEXANELACTAM) NESOI
HS 293379
| Port | Imports | Exports | Balance |
|---|---|---|---|
| CHICAGO, IL | $62.8M | $9.0M | -$53.8M |
| LOS ANGELES INTERNATIONAL AIRPORT, CA | $6.9M | $1.7M | -$5.1M |
| MIAMI INTERNATIONAL AIRPORT, FL | $7.1M | $772K | -$6.3M |