Also, high doses of aspirin can cause a ringing in the ears. Always discuss these and other side effects with your doctor, nurse or pharmacist. Constipation tends to be a persistent problem when taking narcotic analgesics, but it can be treated. However, drowsiness, nausea and vomiting tend only to be a bother at first, and often ease over time. This is the most common side effect of narcotic analgesics.
Prevention is the best approach to constipation.
To prevent or relieve constipation you should eat foods and drink liquids that help to move your bowels, such as fresh fruits, vegetables, prune juice and any other foods high in fiber like whole wheat bread. Try to drink plenty of liquids, and exercise as much as you are able. Walking may help to prevent constipation and will make you feel better generally. Patients on narcotic analgesics should take medicine to help soften their stools and move their bowels. Check with your doctor, nurse, or pharmacist to suggest a treatment for you.