Side effects of commonly prescribed analgesic medications.

Analgesics, including opioids, steroidal and nonsteroidal anti-inflammatory drugs, aspirin, acetaminophen, antiepileptics, and serotonin-norepinephrine reuptake inhibitors, are medications commonly used to treat many forms of pain. However, all of these agents may have significant adverse side effects. Adverse effects may occasionally be inseparable from desired effects. Side effects are often dose dependent and time dependent. It is critical that the prescribing practitioner and the dispensing pharmacist provide a thorough, understandable review of the potential side effects to all patients before these drugs are administered. Proper monitoring and follow-up during therapy are crucial.