Morphine is a kind of painkiller or pain reliever, which belongs to the family opiate (a substance derived from opium), and it is also found in plants, animals, and humans. It is very beneficial in both acute and chronic pain because it directly targets the central nervous system and reduces pain. It is generally used during myocardial infraction and labor pain. Morphine can be taken orally or injected into the muscle or in the space around the spinal cord. 

Morphine is widely used as a pain killer in both acute and chronic pain, and its effect lasts for 3-7 hours. Its side effects can be nausea and constipation. It is found beneficial in treating shortness of breath, and it can be given to both cancer and non-cancer patients. 

Inappropriate or excess morphine can have adverse effects on the human body like constipation, hormonal imbalance, addiction, and effect on performance. 

Morphine has been broadly classified into two classes depending upon their solubility. The first class of morphine is non-water-soluble and brown, while the second class of morphine is water-soluble and white. There is also a third class of morphine commonly known as heroin.

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