U.S. Customs and Border Protection · CROSS Database · 1 HTS code referenced
Primary HTS Code
3004.90.6010
$4641.1M monthly imports
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Ruling Age
32 years
Data compiled from CBP CROSS Rulings, Census Bureau Trade Data · As of 2026-04-30 · Updates monthly
The tariff classification of "Famvir" (Famciclovir) tablets from England
NY 891379 November 17, 1993 CLA-2-30:S:N:N7:238 891379 CATEGORY: Classification TARIFF NO.: 3004.90.6010 Mr. Desmond Flynn SmithKline Beecham Pharmaceuticals One Franklin Plaza PO Box 7929 Philadelphia, PA 19101 RE: The tariff classification of "Famvir" (Famciclovir) tablets from England Dear Mr. Flynn: In your letter dated September 29, 1993, received on October 13, 1993, you requested a tariff classification ruling. The subject merchandise, designated as "Famvir", is a medicament, put up in tablet form, containing the active ingredient, Famciclovir, which is an anti-viral drug. Although you assert that Famciclovir (the active ingredient) is an alkaloid derivative, we disagree. In our opinion, Guanine (the starting ingredient in the manufacture of Famciclovir) is not an alkaloid. Consequently, since we do not believe that Guanine is an alkaloid, Famciclovir cannot be considered to have been derived from an alkaloid. The applicable subheading for the subject merchandise will be 3004.90.6010, Harmonized Tariff Schedule of the United States (HTS), which provides for medicaments ... consisting of mixed or unmixed products for therapeutic or prophylactic uses, put up in measured doses or in forms or packings for retail sale: other: other: other: anti-infective medicaments: other. The rate of duty will be 6.3 percent ad valorem. This merchandise may be subject to the regulations of the Food and Drug Administration. You may contact them at 5600 Fishers Lane, Rockville, MD 20857, telephone number (202) 857-8400. This ruling is being issued under the provisions of Section 177 of the Customs Regulations (19 C.F.R. 177). A copy of this ruling letter should be attached to the entry documents filed at the time this merchandise is imported. If the documents have been filed without a copy, this ruling should be brought to the attention of the Customs officer handling the transaction. Sincerely, Jean F. Maguire Area Director New York Seaport