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pentazocine (cont.)

What should I discuss with my health care provider before using pentazocine (Talwin Lactate)?

Do not use this medication if you are allergic to pentazocine.

Pentazocine may be habit-forming and should be used only by the person it was prescribed for. Pentazocine should never be shared with another person, especially someone who has a history of drug abuse or addiction. Keep the medication in a secure place where others cannot get to it.

If you have certain conditions, you may need a dose adjustment or special tests to safely use this medication. Before using pentazocine, tell your doctor if you have

  • liver or kidney disease;
  • a history of head injury or brain tumor;
  • epilepsy or other seizure disorder;
  • heart disease, high blood pressure, recent heart attack;
  • asthma, COPD, sleep apnea, or other breathing disorders;
  • a dependence on narcotic pain medications;
  • mental illness; or
  • a history of drug or alcohol addiction.

Pentazocine may be harmful to an unborn baby. It could also cause addiction or withdrawal symptoms in a newborn if the mother uses pentazocine during pregnancy. Before you use this medication, tell your doctor if you are pregnant.

Pentazocine is sometimes used during early labor, but using it just before childbirth can cause breathing problems in a newborn.

Pentazocine may pass into breast milk and could harm a nursing baby. Do not use this medication without telling your doctor if you are breast-feeding a baby.

Older adults may be more sensitive to the effects of this medication.

How is pentazocine given (Talwin Lactate)?

Use this medication exactly as it was prescribed for you. Never use pentazocine in larger amounts, or use it for longer than recommended by your doctor. Follow the directions on your prescription label. Tell your doctor if the medicine seems to stop working as well in relieving your pain.

Pentazocine is given as an injection under the skin, into a muscle, or into a vein. Your doctor, nurse, or other healthcare provider will give you this injection. You may be shown how to inject your medicine at home. Do not self-inject this medicine if you do not fully understand how to give the injection and properly dispose of used needles and syringes.

Do not mix pentazocine with other medicines in the same syringe or IV line.

Use each disposable needle only one time. Throw away used needles in a puncture-proof container (ask your pharmacist where you can get one and how to dispose of it). Keep this container out of the reach of children and pets.

If you are giving pentazocine as an injection under the skin, use a different place on your body each time you give yourself an injection. Your care provider will show you the places on your body where you can safely inject the medication. Do not inject into the same place two times in a row. Pentazocine can cause damage to the skin and underlying tissues or muscles if it is injected multiple times into the same skin area.

Do not stop using pentazocine suddenly, or you could have unpleasant withdrawal symptoms such as stomach pain, fever, runny nose, watery eyes, anxiety, or restless feeling. Talk to your doctor about how to avoid withdrawal symptoms when stopping the medication.

Store pentazocine at room temperature away from moisture and heat.

Report Problems to the Food and Drug Administration

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

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