Write a note on Morphine and Codeine.

Morphine:
- It is a potent analgesic (pain-relieving) drug extracted from the latex of the poppy plant,Papaver somniferum.
- It acts on the central nervous system $(CNS)$ by binding to specific opioid receptors,thereby blocking pain signals and providing relief from severe pain.
- It is often used as a sedative and painkiller in patients who have undergone surgery.
Codeine:
- Codeine is an opioid derivative,also obtained from the poppy plant.
- It is primarily used as a mild analgesic and as an antitussive (cough suppressant) in various cough syrups.
- It helps in reducing anxiety and stress,but like morphine,it has a high potential for abuse and addiction.