Prescription opioids can produce drowsiness, constipation and, depending on amount taken, depressed breathing.
White wine and clear liquors such as rum, vodka and gin have fewer toxins and tend to cause less frequent and less severe hangovers than darker varieties of alcohol.
Many doctors in the U.S. choose to use methadone for treating chronic pain in patients even though some of these patients are thought to have a propensity for addiction.
Morphine is currently available as an oral solution, immediate and sustained-release tablets or capsules, suppositories, and injectable preparations.