Which drug has more analgesic effects than morphine?
Codeine is less potent than morphine as an analgesic(60mg codeine=10 mg morphine). 100 mg pethidine= 10 mg morphine.Heroin is conveed to morphine in the body and has higher lipid solubility than morphine. Ref KD Tripathi 8th ed.
Heroin
Apomorphine
Codeine
Pethidine
Central Nervous system