Morphine is considered a(n) drug because it decreases pain.

Morphine is considered a(n) opioid drug because it decreases pain.

Explanation:

Morphine is a medicine, are use to treat moderate to severer pain. Morphine directly works on the central nervous system to decrease the feeling of the pain present in the body.

It is the main alkaloid of opium and obtains from the poppy seeds. It belongs to the opioid class of the drug.

Side effects of this drug are:

1) Vomiting

2) Sweating

3) Constipation

4) Nausea

it would lead to upper respiratory infections and pneumonia.