The World Health Organization's ATC classification organizes medical drugs based on therapeutic properties, chemical composition, and anatomy. It helps make essential medicines readily available globally and is widely used in the pharmaceutical industry.
| Level | Code | Title | |
|---|---|---|---|
| 1 | C | Cardiovascular system | |
| 2 | C04 | Peripheral vasodilators | |
| 3 | C04A | Peripheral vasodilators | |
| 4 | C04AB | Imidazoline derivatives |
| Code | Title | |
|---|---|---|
| C04AB01 | Phentolamine | |
| C04AB02 | Tolazoline |
| Active Ingredient | Description | |
|---|---|---|
| Phentolamine |
Phentolamine is a competitive non-selective α1- and α2-adrenergic receptor blocker of relatively short duration of action. It causes vasodilatation and a fall in blood pressure resulting from the blockade of both post-junctional vascular α1- and α2-adrenoceptors. It also antagonises the vasoconstrictor response to noradrenaline and adrenaline infusions. |
