NCI Drug Dictionary

The NCI Drug Dictionary contains technical definitions and synonyms for drugs/agents used to treat patients with cancer or conditions related to cancer. Each drug entry includes links to check for clinical trials listed in NCI's List of Cancer Clinical Trials.

alfentanil hydrochloride
The hydrochloride salt of alfentanil, a synthetic short-acting opioid with analgesic and local anesthesia enhancing activity. Alfentanil hydrochloride primarily binds to mu-opioid receptor, a G-protein-coupled receptor, thereby mimicking the actions of morphine, the prototypical mu receptor agonist. This agent induces anti-nociception responses mediated through inhibiting the release of various neurotransmitters such as substance P, GABA, dopamine, acetylcholine and noradrenaline; in addition, the release of vasopressin, somatostatin, insulin and glucagon are also inhibited. Check for active clinical trials using this agent. (NCI Thesaurus)

US brand name:Alfenta
Foreign brand name:Rapifen