Product classification

HS code for Phentermine: 2921.46

Amine-function compounds, aromatic monoamines and derivatives, amfetamine (INN), benzfetamine (INN), dexamfetamine (INN), etilamfetamine (INN), fencamfamin (INN), lefetamine (INN), levamfetamine (INN), mefenorex (INN) and phentermine (INN), salts thereof.

Classification of phentermine under HS 2921.46

Phentermine is classified under HS code 2921.46. This classification is found within Chapter 29, which covers organic chemicals. Specifically, heading 2921 is for amine-function compounds. Within this heading, the sub-category 2921.40 covers aromatic monoamines and their derivatives. Subheading 2921.46 is a specific international designation for several controlled substances and their salts, including amfetamine, benzfetamine, dexamfetamine, and phentermine. Phentermine is a sympathomimetic amine used as an appetite suppressant. The classification is based on the chemical structure of the molecule—an aromatic ring attached to an amine group. Because it is a pure chemical compound (or a salt thereof), it is classified in Chapter 29 rather than Chapter 30, provided it is not yet put up in measured doses or in forms or packings for retail sale. The inclusion of phentermine in 2921.46 is part of a global effort to monitor and control the trade of psychotropic substances. Customs authorities use this specific code to track the movement of these chemicals to ensure compliance with international drug control treaties and national regulations.

Covers
  • Phentermine (INN)
  • Phentermine hydrochloride
  • Phentermine resin complex (bulk)
  • Salts of phentermine
  • Aromatic monoamines specifically listed in 2921.46
Also under 2921.46
  • Shire (Vyvanse - lisdexamfetamine)
  • Teva (Adderall - mixed amphetamine salts)
  • KVK-Tech (phentermine)
  • Sandoz (generic amphetamine salts)
  • Mallinckrodt (various controlled substances)

Codes often confused with 2921.46

Common mistake. Phentermine is frequently misclassified under 3004.90 if it is already in tablet or capsule form for retail sale. Chapter 29 is only for bulk chemicals. Another error is using 2921.49, which is the residual category for \"other\" aromatic monoamines. Since phentermine is explicitly named in the 2921.46 subheading, using the residual code is a violation of the General Rules of Interpretation (GRI).

3004.90Medicaments; consisting of mixed or unmixed products n.e.c. in heading no. 3004, for therapeutic or prophylactic uses, packaged for retail sale2921.49Amine-function compounds; aromatic monoamines and their derivatives; salts thereof; n.e.c. in item no. 2921.4

Top exporters and importers of HS 292146 (the code used for phentermine), 2025

In 2025, the largest exporter of HS 292146 (the code used for phentermine) in UN Comtrade data was the United Kingdom, with 44% of world exports; the largest importer in UN Comtrade data was the United States, with 47% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.

Figures cover everything classified under HS 292146, not only phentermine.

Top exporters 2025 · share of world exports

  1. 1 United Kingdom $63M
  2. 2 India $56M
  3. 3 United States $10M

World total: $142M Reported figures on UN Comtrade ↗

Top importers 2025 · share of world imports

  1. 1 United States $10M
  2. 2 Australia $3.3M
  3. 3 Germany $2.2M

World total: $22M Reported figures on UN Comtrade ↗

How these figures are built

109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries that did not report are estimated from what other countries recorded trading with them. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).

Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.

Brazil NCM codes for phentermine

Brazil splits HS 2921.46 into 9 NCM codes. Pick the one that matches your product:

Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.

Questions about phentermine

What is the HS code for Phentermine?

The HS code for Phentermine is 292146 (Amine-function compounds; aromatic monoamines and derivatives; amfetamine (INN), benzfetamine (INN), dexamfetamine (INN), etilamfetamine (INN), fencamfamin (INN), lefetamine (INN), levamfetamine (INN), mefenorex (INN) and phentermine (INN); salts thereof). The HS code for phentermine and its salts in bulk form is 2921.46.

How do I classify Phentermine for customs?

Phentermine is classified under HS code 292146 — Amine-function compounds; aromatic monoamines and derivatives; amfetamine (INN), benzfetamine (INN), dexamfetamine (INN), etilamfetamine (INN), fencamfamin (INN), lefetamine (INN), levamfetamine (INN), mefenorex (INN) and phentermine (INN); salts thereof. This is a 6-digit subheading level code.

Is phentermine classified differently if it is a finished medicine?

Yes, if phentermine is prepared in measured doses (like 37.5mg tablets) for retail sale, it is classified under HS code 3004.90 as a medicament.

Which countries are the top exporters of phentermine (HS 292146)?

In 2025, the top exporters of HS 292146 (the code used for phentermine) in UN Comtrade data were the United Kingdom ($63M, 44% of world exports), India ($56M) and the United States ($10M). World exports came to about $142M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.

Which countries are the top importers of phentermine (HS 292146)?

In 2025, the top importers of HS 292146 (the code used for phentermine) in UN Comtrade data were the United States ($10M, 47% of world imports), Australia ($3.3M) and Germany ($2.2M). World imports came to about $22M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.

Is the HS code for Phentermine the same in all countries?

The base HS code 292146 for Phentermine is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.

What is the NCM code for phentermine in Brazil?

Brazil splits HS 292146 into 9 NCM codes, so the right one for phentermine depends on the product's details: 2921.46.10 (Amfetamine (amphetamine) and its salts), 2921.46.20 (Benzfetamine and its salts), 2921.46.30 (Dexamfetamine (dexamphetamine) and its salts), 2921.46.40 (Etilamfetamine and its salts), 2921.46.50 (Fencamfamin and its salts), 2921.46.60 (Phentermine and its salts), and more.