Some prescription pain medications can cause constipation, nausea, dizziness, headache, drowsiness and vomiting. Make sure the doctor is aware of all conditions you have, such as ulcers, high blood pressure, diabetes, kidney problems, or depression. Also make sure the doctor is aware of all medications you take, including those that you buy without a prescription. Some pain medications are dangerous if they are taken with other types of drugs. Others can contribute to conditions like stomach distress or kidney problems.
Some pain medications can cause allergic reactions.
Make sure your doctor knows about any allergies or drug reactions you've experienced. Many people are reluctant to take pain medications because of concerns about side effects. Discuss your concerns with your doctor. Let your doctor know how your pain has affected your emotions and behavior. The more you understand about the pain therapy your doctor recommends, the more you will benefit from treatment.