Opioids (Symptoms)

In addition to relieving pain, opioid drugs can affect regions of the brain that mediate what we perceive as pleasure, resulting in the initial euphoria that many opioids produce. Taking a large single dose could cause severe respiratory depression or be fatal.

Common side effects of opioids include constipation, sleepiness, nausea and vomiting, clouded thinking, respiratory problems, gradual overdose, sexual dysfunction. Some of the milder side effects may be avoided by adjusting the time when doses are taken, such as taking them after a meal, or at bedtime if a person is experiencing nausea or sleepiness. Constipation may be lessened by drinking more fluids, eating high-fiber foods, or taking a laxative (which should be approved or prescribed by the patient's doctor). Patients should talk to their doctor if side effects become too troubling.