What is the primary effect of opioids on the body?

The primary effect of opioids on the body is to induce sedation and relieve pain. Opioids work by binding to specific receptors in the brain and spinal cord, which are part of the body's pain control system. This binding inhibits the transmission of pain signals and alters the perception of pain, leading to significant analgesia (pain relief). Additionally, opioids can produce a sense of euphoria and relaxation, contributing to their sedative effects.

While some opioids may have effects on blood pressure or digestive health, such effects are secondary and not the main therapeutic purpose of opioid medications. Opioids are not indicated for increasing muscle tone; rather, they can actually lead to muscle relaxation due to their overall sedative properties. The primary clinical use of opioids centers around pain management and sedation, making the option about inducing sedation and relieving pain the most accurate description of their primary effects.