Primaxin IV

Generic Name: Imipenem/Cilastatin (IM-i-PEN-em/SYE-la-STAT-in)Brand Name: Primaxin IV

Primaxin IV is used for:

Treating infections caused by certain bacteria.

Primaxin IV is a carbapenem antibiotic. It kills bacteria by blocking growth of the bacteria's cell wall.

Do NOT use Primaxin IV if:

  • you are allergic to any ingredient in Primaxin IV or any other carbapenem (eg, meropenem)
  • you are taking probenecid
  • the patient is a child with a brain or nervous system infection, or weighs less than 66 lb (30 kg) and has kidney problems

Contact your doctor or health care provider right away if any of these apply to you.

Before using Primaxin IV :

Some medical conditions may interact with Primaxin IV . Tell your doctor or pharmacist if you have any medical conditions, especially if any of the following apply to you:

  • if you are pregnant, planning to become pregnant, or are breast-feeding
  • if you are taking any prescription or nonprescription medicine, herbal preparation, or dietary supplement
  • if you have allergies to medicines, foods, or other substances
  • if you have had a severe allergic reaction (eg, severe rash, hives, difficulty breathing, dizziness) to a penicillin antibiotic (eg, amoxicillin) or cephalosporin antibiotic (eg, cephalexin)
  • if you have kidney problems, a history of seizures or central nervous system problems (eg, brain lesions), or you are in shock
  • if you are on dialysis

Some MEDICINES MAY INTERACT with Primaxin IV . Tell your health care provider if you are taking any other medicines, especially any of the following:

  • Ganciclovir because risk of seizures may be increased
  • Probenecid because actions and side effects of Primaxin IV may be increased
  • Divalproex sodium or valproic acid because their effectiveness may be decreased by Primaxin IV
  • Other medicines that may increase your risk of seizures (eg, tramadol) because the risk of seizures may be further increased when combined with Primaxin IV . Ask your doctor or pharmacist if you have questions about whether any of your other medicines may increase your risk of seizures

This may not be a complete list of all interactions that may occur. Ask your health care provider if Primaxin IV may interact with other medicines that you take. Check with your health care provider before you start, stop, or change the dose of any medicine.

How to use Primaxin IV :

Use Primaxin IV as directed by your doctor. Check the label on the medicine for exact dosing instructions.

  • Primaxin IV is usually given as an injection at your doctor's office, hospital, or clinic. If you will be using Primaxin IV at home, a health care provider will teach you how to use it. Be sure you understand how to use Primaxin IV . Follow the procedures you are taught when you use a dose. Contact your health care provider if you have any questions.
  • Do not use Primaxin IV if it contains particles, is cloudy or discolored, or if the vial is cracked or damaged.
  • To clear up your infection completely, use Primaxin IV for the full course of treatment. Keep using it even if you feel better in a few days.
  • Keep this product, as well as syringes and needles, out of the reach of children and pets. Do not reuse needles, syringes, or other materials. Ask your health care provider how to dispose of these materials after use. Follow all local rules for disposal.
  • If you miss a dose of Primaxin IV , use it as soon as possible. If it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not use 2 doses at once.

Ask your health care provider any questions you may have about how to use Primaxin IV .

Important safety information:

  • Primaxin IV may cause dizziness or drowsiness. Do not drive, operate machinery, or do anything else that could be dangerous until you know how you react to Primaxin IV . Using Primaxin IV alone, with certain other medicines, or with alcohol may lessen your ability to drive or to perform other potentially dangerous tasks.
  • Do not use more than the recommended dose or more often than prescribed without checking with your doctor.
  • Be sure to use Primaxin IV for the full course of treatment. If you do not, the medicine may not clear up your infection completely. The bacteria could also become less sensitive to this or other medicines. This could make the infection harder to treat in the future.
  • Primaxin IV only works against bacteria; it does not treat viral infections (eg, the common cold).
  • Mild diarrhea is common with antibiotic use. However, a more serious form of diarrhea (pseudomembranous colitis) may rarely occur. This may develop while you use the antibiotic or within several months after you stop using it. Contact your doctor right away if stomach pain or cramps, severe diarrhea, or bloody stools occur. Do not treat diarrhea without first checking with your doctor.
  • Long-term or repeated use of Primaxin IV may cause a second infection. Tell your doctor if signs of a second infection occur. Your medicine may need to be changed to treat this.
  • Tell your doctor or dentist that you take Primaxin IV before you receive any medical or dental care, emergency care, or surgery.
  • Lab tests, including kidney function, liver function, and blood counts, may be performed to monitor your progress. Be sure to keep all doctor and lab appointments.
  • Use Primaxin IV with caution in the ELDERLY; they may be more sensitive to its effects.
  • Use Primaxin IV with extreme caution in CHILDREN younger than 10 years old who have diarrhea or an infection of the stomach or bowel.
  • PREGNANCY and BREAST-FEEDING: If you become pregnant, contact your doctor. You will need to discuss the benefits and risks of using Primaxin IV while you are pregnant. It is not known if Primaxin IV is found in breast milk. If you are or will be breast-feeding while you use Primaxin IV , check with your doctor. Discuss any possible risks to your baby.

Possible side effects of Primaxin IV :

All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome:

Mild diarrhea; nausea; vomiting.

Seek medical attention right away if any of these SEVERE side effects occur:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); bloody stools; breathing problems; chest pain; dark urine; decreased urination; fast or irregular heartbeat; fever, chills, or sore throat; hearing loss; joint pain or tenderness; mental or mood changes (eg, agitation, anxiety, confusion); numbness or tingling of the skin; pain, swelling, or redness at the injection site; red, swollen, blistered, or peeling skin; seizures; severe diarrhea; severe stomach cramps or pain; shortness of breath; swelling of the hands or feet; tremors or abnormal muscle movements; unusual bruising or bleeding; unusual tiredness or weakness; unusual vaginal odor or discharge; vein swelling or tenderness; white patches in the mouth; yellowing of the eyes or skin.

This is not a complete list of all side effects that may occur. If you have questions about side effects, contact your health care provider. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088. You may also report side effects at

If OVERDOSE is suspected:

Contact 1-800-222-1222 (the American Association of Poison Control Centers), your local poison control center (, or emergency room immediately. Symptoms may include seizures; slow breathing; tremors.

Proper storage of Primaxin IV :

Primaxin IV is usually handled and stored by a health care provider. If you are using Primaxin IV at home, store Primaxin IV as directed by your pharmacist or health care provider. Keep Primaxin IV out of the reach of children and away from pets.

General information:

  • If you have any questions about Primaxin IV , please talk with your doctor, pharmacist, or other health care provider.
  • Primaxin IV is to be used only by the patient for whom it is prescribed. Do not share it with other people.
  • If your symptoms do not improve or if they become worse, check with your doctor.

This information is a summary only. It does not contain all information about Primaxin IV . If you have questions about the medicine you are taking or would like more information, check with your doctor, pharmacist, or other health care provider.

  • Primaxin IV Advanced Consumer (Micromedex) - Includes Dosage Information
  • Primaxin IV Concise Consumer Information (Cerner Multum)
  • Primaxin IV Prescribing Information (FDA)
  • Imipenem-Cilastatin Professional Patient Advice (Wolters Kluwer)
  • Primaxin IM Prescribing Information (FDA)