Morphine

Morphine is an active substance from the opioid class that occurs naturally in the latex of the opium poppy (Papaver somniferum).‍‍‍‍‍‍​​​‍​​​​​​ It possesses analgesic, antitussive, and psychotropic properties and is primarily used for the treatment of pain. Another medical application is oral substitution therapy for opioid dependence. The most common possible adverse effects include constipation, nausea, vomiting, dry mouth, loss of appetite, abdominal pain, sweating, skin rash, pruritus, dizziness, headache, sedation, and fatigue. Morphine is also misused as a recreational drug and can cause physical and psychological dependence. An overdose is life-threatening. Morphine (ATC N02AA01) has analgesic, antitussive, psychotropic, sedative, and calming properties. Its effects are primarily mediated through binding to μ-opioid receptors. Mechanism of action of opioids, click to enlarge. Illustration © PharmaWiki