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This medication is used to relieve moderate to severe pain.
- To prevent constipation, increase your intake of fiber, drink plenty of water and exercise.
- Stool softeners may be helpful.
- Do not share this medication with others.
- Store at room temperature away from sunlight and moisture.
- To prevent upset stomach, take this with food or milk.
- Pain medications work best in preventing pain before it occurs.
- Once the pain becomes intense, the medication is not as effective in relieving it.
- Take this medication only by mouth exactly as directed by your doctor.
- Do not increase your dose, use it more frequently or use it for a longer period of time than prescribed because this drug can be habit-forming.
- Also, if used for an extended period, do not suddenly stop using this drug without your doctor's approval.
- Over time, this drug may not work as well.
- Consult your doctor if this medication is not relieving the pain sufficiently.
- May cause constipation, lightheadedness, disturbed dreams, vision changes, confusion, dizziness, drowsiness, diarrhea, stomach upset, nausea or flushing.
- If any of these effects persist or worsen, inform your doctor.
- Notify your doctor if you develop an irregular heartbeat, facial swelling, fainting, anxiety, hallucinations or tremors.
- In the unlikely event you have an allergic reaction to this drug, seek immediate medical attention.
- Symptoms of an allergic reaction include rash, itching, swelling, dizziness or trouble breathing.
- If you notice other effects not listed above, contact your doctor or pharmacist.
- Tell your doctor your medical history, especially of kidney, liver or lung disease; asthma, severe diarrhea, colitis, seizures, substance abuse history and of any allergies you may have.
- This medication is safe when used orally (by mouth).
- Severe, possibly fatal reactions may occur if this oral medication is misused by injecting it.
- Use caution performing activities requiring alertness (such as driving) if this medication makes you dizzy or drowsy.
- Alcoholic beverages can add to the dizziness/drowsiness effects of this medication and increase stomach irritation.
- Ask your doctor for advice about the safe use of alcohol.
- Before having surgery, especially gall bladder surgery, tell the doctor that you take pentazocine.
- This medication should be used only when clearly needed during pregnancy.
- Discuss the risks and benefits with your doctor.
- It is not known if this drug is excreted into breast milk.
- Consult your doctor before breast-feeding.
- If you miss a dose, take it as soon as remembered; do not take if it is almost time for the next dose, instead, skip the missed dose and resume your usual dosing schedule.
- Do not "double-up" the dose to catch up.
- Tell your doctor of all prescription and nonprescription drugs you may use, especially of other narcotic pain relievers (e.g., codeine), cimetidine, sibutramine and of any other medications that may make you drowsy such as sedatives, tranquilizers, drowsiness-causing antihistamines (e.g., diphenhydramine), drugs used for depression and of alcohol use.
- Do not start or stop any medicine without doctor or pharmacist approval.