What Are Opiates?
It is a Schedule I substance in the U.S., meaning s there is not currently accepted medical use. These substances affect the opioid receptors in the brain and body to produce pain relief. Morphine and codeine are the two most common opiates. kenansavas / E+ / Getty Images Some of these include heroin, oxycodone, andmethadone. How Opiates Affect the Brain Both humans and animals have opiate receptors in the brain....