easy bruising, unusual bleeding (nose, mouth, vagina, or rectum), purple or red
under your skin.
Less serious side effects of morphine may include:
nausea, vomiting, stomach pain, loss of appetite;
flushing (warmth, redness, or tingly feeling);
headache, dizziness, spinning sensation;
memory problems; or
sleep problems (insomnia), strange dreams.
This is not a complete list of side effects and others may occur.