The drugs used in the present study were morphine sulfate (Temad Pharmaceutical, Tehran, Iran), agmatine sulfate, RX821002, UK 14 304 (Sigma, Germany), and yohimbine (Sigma, UK). The UK 14 304 ...

In the 1960s, nuerochemist Choh Hao Li at the University of California in San Francisco was investigating the pituitary gland for substances that aided in the metabolism of fat. It was hard to get ...

More expensive than morphine, hydromorphone is five times as potent. [10] Although its metabolites undergo renal clearance, the advantage of hydromorphone over morphine is that of its potency ...