Like other opioids , e.g. oxycodone -LRB- OxyContin , Percocet , Percodan -RRB- , hydromorphone -LRB- Dilaudid , Palladone -RRB- , and diacetylmorphine -LRB- Heroin -RRB- , morphine acts directly on the central nervous system -LRB- CNS -RRB- to relieve pain .

Like other opioids , e.g. diacetylmorphine -LRB- heroin -RRB- , morphine acts directly on the central nervous system -LRB- CNS -RRB- to relieve pain , and at synapses of the nucleus accumbens in particular .
