Methadone has a rapid onset of action and a short half-life. 1. The main indication for remifentanil is for treatment of chronic intractable pain. 2. Naloxone is a short-acting opioid agonist. 3....

Methadone has a rapid onset of action and a short half-life.

1. The main indication for remifentanil is for treatment of chronic intractable pain.

2. Naloxone is a short-acting opioid agonist.

3. Drugs that inhibit the reuptake of noradrenaline can be effective analgesics in neuropathic pain.