Methadone (Dolophine) may cause slowed breathing and irregular heartbeat, which may be life-threatening. If you experience any of the following symptoms, call your doctor immediately: difficulty breathing; extreme drowsiness; slow, shallow breathing; fast, slow, pounding, or irregular heartbeat; faintness; severe dizziness; or confusion.
The risk that you will experience serious or life-threatening side effects of methadone (Dolophine) is greatest when you first start taking methadone, when you switch from another narcotic medication to methadone and when your doctor increases your dose of methadone. Your doctor may start you on a low dose of methadone and gradually increase your dose. Your doctor will monitor you closely during this time.
Follow the directions on your prescription label carefully and ask your doctor or pharmacist to explain any part you do not understand. Take methadone exactly as directed. Do not take more methadone or take methadone more often than prescribed by your doctor. If you are taking methadone to control pain, your pain may return before it is time for your next dose of methadone (Dolophine). If this happens, do not take an extra dose of methadone. You will still have methadone in your body after the pain relieving effect of the medication wears off. If you take extra doses, you may have too much methadone (Dolophine) in your body and you may experience life-threatening side effects. Be aware that the pain relieving effects of methadone will last longer as your treatment continues for a longer time. Talk to your doctor if your pain is not controlled during your treatment with methadone.
Talk to your doctor about the risks of taking methadone for your condition.
Use of methadone to treat opiate addiction:
If you have been addicted to an opiate (narcotic drug such as heroin), and you are taking methadone to help you stop taking or continue not taking the drug, you must enroll in a treatment program. The treatment program must be approved by the state and federal governments and must treat patients according to specific federal laws. You may have to take your medication at the treatment program facility under the supervision of the program staff. Ask your doctor or the treatment program staff if you have any questions about enrolling in the program or taking or getting your medication.