Drug Interaction Report

The following interaction applies only if you are using naloxone in an injectable formulation:

naloxone can reverse the effects of pentazocine. If you are a physically dependent patient you may experience withdrawal symptoms. This can cause nausea, vomiting, diarrhea, aches, fever, runny nose, sneezing, nervousness, irritability, shivering, and abdominal cramps. Talk to your doctor if you have any questions or concerns. You may need a dose adjustment or more frequent monitoring by your doctor to safely use both medications. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.

Using pentazocine together with diclofenac may cause seizures. Contact your doctor if you experience tremors, involuntary muscle movements, and seizures. If your doctor does prescribe these medications together, you may need a dose adjustment or special test to safely use both medications. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.

Smoking tobacco may reduce the blood levels and effects of pentazocine. Contact your doctor if pentazocine is not adequately controlling your symptoms.

Do not use alcohol or medications that contain alcohol while you are receiving treatment with pentazocine. This may increase nervous system side effects such as drowsiness, dizziness, lightheadedness, difficulty concentrating, and impairment in thinking and judgment. In severe cases, low blood pressure, respiratory distress, fainting, coma, or even death may occur. With certain long-acting formulations of narcotic pain medication, consumption of alcohol may also cause rapid release of the drug, resulting in high blood levels that may be potentially lethal. Talk to your doctor or pharmacist if you have questions on how to take this or other medications you are prescribed. Do not use more than the recommended dose of pentazocine, and avoid activities requiring mental alertness such as driving or operating hazardous machinery until you know how the medication affects you. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medication without first talking to your doctor.

Ask your doctor before using diclofenac together with ethanol (alcohol). Do not drink alcohol while taking diclofenac. Alcohol can increase your risk of stomach bleeding caused by diclofenac. Call your doctor at once if you have symptoms of bleeding in your stomach or intestines. This includes black, bloody, or tarry stools, or coughing up blood or vomit that looks like coffee grounds. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.