Verapamil Hydrochloride
Verapamil hydrochloride, a phenylalkylamine calcium channel blocker, treats hypertension, angina, and supraventricular tachycardia. This synthetic aromatic heterocycle with nitrogen hetero-atoms is classified under HTS 2933.99.53.00 for cardiovascular drugs. Bulk powder form for generic pharmaceutical production.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If classified primarily by amino-acid function
Chapter notes prioritize oxygen/nitrogen functions; different principal function changes heading.
If for immediate-release oral tablets
Finished dosage forms containing verapamil classify as medicaments in Chapter 30.
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Import Tips & Compliance
• Include polymorphic form specification (Form I or II) in documentation to match pharmacopeial standards
• Declare particle size distribution if critical for bioavailability - affects FDA bioequivalence
Related Products under HTS 2933.99.53.00
Diltiazem Hydrochloride
Diltiazem hydrochloride is a benzothiazepine derivative calcium channel antagonist used for hypertension, angina, and arrhythmias. Its nitrogen-containing heterocyclic structure qualifies it for HTS 2933.99.53.00 as an aromatic cardiovascular drug. Imported typically as bulk API powder for tablet manufacturing.
Felodipine
Felodipine is a vasoselective dihydropyridine calcium channel blocker for essential hypertension treatment. This aromatic nitrogen-heterocycle classifies under HTS 2933.99.53.00 as a cardiovascular drug in bulk form. Imported as free base or specific polymorphs for extended-release formulations.
Isradipine
Isradipine, a 1,4-dihydropyridine derivative, selectively blocks L-type calcium channels for hypertension therapy. Its nitrogen-heterocyclic aromatic structure fits HTS 2933.99.53.00 as a cardiovascular drug API. Typically imported as micronized powder for tablet coating.
Nifedipine
Nifedipine is the prototype dihydropyridine calcium channel blocker used for angina and hypertension. This nitro-substituted aromatic heterocycle with nitrogen hetero-atoms classifies under HTS 2933.99.53.00. Bulk API imported under nitrogen atmosphere due to light sensitivity.
Nimodipine
Nimodipine is a lipophilic 1,4-dihydropyridine indicated for cerebral vasospasm prevention post-subarachnoid hemorrhage. As a nitrogen-heterocyclic cardiovascular drug, it falls under HTS 2933.99.53.00. Imported as oily liquid or powder for IV and oral formulations.
Pravastatin Sodium
Pravastatin sodium, a hydrophilic HMG-CoA reductase inhibitor, lowers LDL cholesterol in cardiovascular disease prevention. Its complex nitrogen-heterocyclic structure qualifies under HTS 2933.99.53.00 as a cardiovascular drug. Sodium salt form imported as spray-dried amorphous powder.