Which of the following is a common side effect of opiates?

Opiates are known to interact with the central nervous system by binding to specific receptors, leading to pain relief as well as a range of pharmacological effects. One of the well-documented common side effects of opiates is nausea and vomiting. This occurs because opiates can stimulate the chemoreceptor trigger zone (CTZ) in the brain, which is responsible for the sensation of nausea and can induce vomiting. This side effect is often dose-dependent, meaning that higher doses may increase the likelihood of experiencing nausea and vomiting.

Other options, while they can be associated with various conditions or treatments, are not common side effects of opiates specifically. For example, diarrhea is more frequently associated with opioid withdrawal rather than use, whereas respiratory stimulation is not typical; in fact, respiratory depression is a noted risk of opiate use. Anxiety is not a conventional side effect of opiates and may arise from withdrawal or other underlying conditions. Understanding these effects helps healthcare providers manage the risks associated with opiate therapy effectively.