Chemical formula: C₂₀H₂₄N₂O₂ Molecular mass: 324.417 g/mol PubChem compound: 441074
Quinidine increases plasma levels of dextromethorphan by competitively inhibiting cytochrome P450 2D6 (CYP2D6), which catalyses a major biotransformation pathway for dextromethorphan.
This medicinal substance has been classified in the anatomical therapeutic chemical (ATC) classification according to its main therapeutic use as follows:
| ATC code | Group title | Classification |
|---|---|---|
| C01BA01 | Quinidine | C Cardiovascular system → C01 Cardiac therapy → C01B Antiarrhythmics, class I and III → C01BA Antiarrhythmics, class Ia |
Competent medicine agencies globally have authorized commercialization of this active ingredient according to these medication package inserts (MPIs):
| Title | Information Source | Document Type | |
|---|---|---|---|
| QUINIDINE SULFATE Tablet | FDA, National Drug Code (US) | MPI, US: SPL/Old |
Quinidine is an active ingredient of these brands:
United States (US)
Estonia (EE)
France (FR)
Israel (IL)
Lithuania (LT)
Turkey (TR)
Note the following: The list of brand names is continuously updated, and thus does not include the total of products circulating worldwide. |
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