# United States tariff lines under HS 2937.90

> The United States tariff splits HS 2937.90 (hormones, prostaglandins, thromboxanes and leukotrienes, natural or reproduced by synthesis; derivatives and structural analogues thereof, including chain modified polypeptides, used primarily as hormones) into 6 national lines: 2937.90.05.00 (epinephrine), 2937.90.10.00 (epinephrine hydrochloride), 2937.90.20.00 (other), 2937.90.40.00 (l-Thyroxine (Levothyroxine), sodium) and 2 others. Every United States line under 2937.90 is free of general (MFN) duty.

Source: https://border.bot/countries/united-states/hs-codes/293790
Last updated: 9 October 2026

[Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 29](https://border.bot/countries/united-states/hs-codes/29) / [2937.90](https://border.bot/countries/united-states/hs-codes/293790)

## Key facts

- HS subheading: [2937.90](https://border.bot/hs-codes/293790)
- Duty (MFN): Free
- National lines: 6
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 29: Organic chemicals

## United States lines under 2937.90

The United States tariff splits HS 2937.90 (hormones, prostaglandins, thromboxanes and leukotrienes, natural or reproduced by synthesis; derivatives and structural analogues thereof, including chain modified polypeptides, used primarily as hormones) into 6 national lines: 2937.90.05.00 (epinephrine), 2937.90.10.00 (epinephrine hydrochloride), 2937.90.20.00 (other), 2937.90.40.00 (l-Thyroxine (Levothyroxine), sodium) and 2 others.

Every United States line under 2937.90 is free of general (MFN) duty.

- [2937.90.05.00](https://border.bot/countries/united-states/hs-codes/2937900500) Other, Catecholamine hormones, their derivatives and structural analogues, Epinephrine. Duty (MFN): free
- [2937.90.10.00](https://border.bot/countries/united-states/hs-codes/2937901000) Other, Catecholamine hormones, their derivatives and structural analogues, Other, Epinephrine hydrochloride. Duty (MFN): free
- [2937.90.20.00](https://border.bot/countries/united-states/hs-codes/2937902000) Other, Catecholamine hormones, their derivatives and structural analogues, Other, Other. Duty (MFN): free
- [2937.90.40.00](https://border.bot/countries/united-states/hs-codes/2937904000) Other, Amino-acid derivatives, l-Thyroxine (Levothyroxine), sodium. Duty (MFN): free
- [2937.90.45.00](https://border.bot/countries/united-states/hs-codes/2937904500) Other, Amino-acid derivatives, Other. Duty (MFN): free
- [2937.90.90.00](https://border.bot/countries/united-states/hs-codes/2937909000) Other, Other. Duty (MFN): free

## In other countries

No other national tariff on border.bot has live lines under 2937.90 yet.

- [The Harmonized System text for 2937.90](https://border.bot/hs-codes/293790)

- Previous subheading: [2937.50](https://border.bot/countries/united-states/hs-codes/293750) Hormones, prostaglandins, thromboxanes and leukotrienes, natural or reproduced by synthesis; derivatives and structural analogues thereof, including chain modified polypeptides, used primarily as hormones
- Next subheading: [2938.10](https://border.bot/countries/united-states/hs-codes/293810) Glycosides, natural or reproduced by synthesis, and their salts, ethers, esters and other derivatives

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 2937.90?

The United States tariff splits HS 2937.90 (hormones, prostaglandins, thromboxanes and leukotrienes, natural or reproduced by synthesis; derivatives and structural analogues thereof, including chain modified polypeptides, used primarily as hormones) into 6 national lines: 2937.90.05.00 (epinephrine), 2937.90.10.00 (epinephrine hydrochloride), 2937.90.20.00 (other), 2937.90.40.00 (l-Thyroxine (Levothyroxine), sodium) and 2 others.

### What is the duty on HS 2937.90 in the United States?

Every United States line under 2937.90 is free of general (MFN) duty.

## Sources and updates

The tariff lines for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The duty rates for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The trade programmes for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

This page was last updated on 9 October 2026.

Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling.

Official source files:

- https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false

Machine-readable: https://border.bot/countries/united-states/hs-codes/293790.json