Possible Interaction: Alfentanil and Cocaine

“Combination of a relatively high dose of cocaine with either heroin or alfentanil , but not nalbuphine, also resulted in only a small reduction in income concomitant with increased labor, suggesting that heroin and alfentanil made cocaine consumption more resistant to increasing response costs, or more “inelastic.””

“Using the labor supply economic model, combinations of heroin, alfentanil , or nalbuphine with relatively low doses of cocaine were found to increase the number of injections per session (“income”) and total responses per session (“labor”).”