Morphine…?

The chemical formula for morphine is C17 H19 NO3, the structure can be seen here:http://www.arikah.net/encyclopedia/Morph…
Precautions: Don’t drive/operate machinery/do anything important while taking morphine. Don’t take it if you are allergic to it. Do not take more than was prescribed. Don’t take other medications with morphine without first consulting your physician or pharmacist.
How it works:
Morphine is a potent µ-opiate receptor agonist. Clinically, stimulation of µ-receptors produces analgesia, euphoria, respiratory depression, miosis, decreased gastrointestinal motility, and physical dependence. Morphine relieves pain by changing the perception of pain at the spinal cord. The emotional response to pain is also altered, for example, I have heard, “It still hurts, but I don’t care.”
There is no ceiling effect of analgesia for opiates.
Side effects:
Common side effects include, itching, blurred vision, clumsiness, unsteadiness, constipation, decrease or difficulty passing urine, dizziness, drowsiness, dry mouth, flushing, headache, nausea/vomiting, pinpoint pupils, sweating.
Other side effects that should be reported to the prescriber include, breathing difficulties, wheezing, cold clammy skin, seizures, slow or fast heartbeat, severe rash, unusual weakness, confusion, lightheadedness or fainting spells, nervousness or restlessness.
Signs and effects of overuse:
Drug seeking behavior, addiction, respiratory depression and overdose.