Doripenem Antibiotic: Uses, Dosage, Side Effects & Administration

Summary of Key Points

Doripenem is an antibiotic used to treat serious bacterial infections, including pneumonia, urinary tract infections, and intra-abdominal infections. It belongs to the carbapenem class of antibiotics, which work by killing bacteria. Doripenem is typically administered in a hospital setting through an IV. It is important to follow your healthcare provider’s instructions and complete the entire course of treatment. If you have any concerns, consult one of our telemedicine providers for guidance.

Names of Medication

US Brand Name: Doribax

Generic Name: Doripenem

The generic name refers to the active ingredient in the medication and is listed in parentheses next to the brand name.

Pharmacologic Category

Doripenem is part of the carbapenem class of antibiotics. Other medications in this category include:

1. Meropenem
2. Imipenem
3. Ertapenem

Doripenem Dosage

Doripenem is prescribed to treat various bacterial infections in adults. The dosage depends on the specific infection being treated. Always follow your healthcare provider’s instructions and never adjust your dose without consulting a doctor. You can schedule a telemedicine appointment with one of our providers for personalized advice.

1. Pneumonia: 500 mg every 8 hours for 7-14 days, administered by IV infusion.
2. Urinary Tract Infection (UTI): 500 mg every 8 hours for 5-10 days, administered by IV infusion.
3. Intra-abdominal Infection: 500 mg every 8 hours for 5-14 days, administered by IV infusion.
4. Skin and Soft Tissue Infection: 500 mg every 8 hours for 7-14 days, administered by IV infusion.
5. Sepsis: 500 mg every 8 hours for 7-14 days, administered by IV infusion.
6. Bacteremia: 500 mg every 8 hours for 7-14 days, administered by IV infusion.
7. Meningitis: 500 mg every 8 hours for 7-21 days, administered by IV infusion.
8. Endocarditis: 500 mg every 8 hours for 4-6 weeks, administered by IV infusion.
9. Osteomyelitis: 500 mg every 8 hours for 4-6 weeks, administered by IV infusion.
10. Respiratory Tract Infection: 500 mg every 8 hours for 7-14 days, administered by IV infusion.

Dosage Forms and Strengths

Doripenem is available in the following form and strength:

1. 500 mg powder for reconstitution for intravenous (IV) infusion

Administration Instructions for Doripenem

Doripenem is administered through an IV infusion, usually in a hospital or clinical setting. The infusion typically lasts about 1 hour. It is essential to complete the full course of treatment, even if you start feeling better, to ensure the infection is fully eradicated. If you miss a dose, contact your healthcare provider immediately for instructions. Do not take an extra dose to make up for a missed one.

Doripenem Side Effects and Adverse Reactions

Like all medications, Doripenem can cause side effects. Most are mild, but some can be more serious. If you experience any severe side effects, contact your healthcare provider immediately or seek emergency medical attention.

1. Common Side Effects (1-10%): Diarrhea, headache, nausea, rash, and elevated liver enzymes.
2. Less Common Side Effects (<1%): Dizziness, vomiting, and injection site reactions (such as pain or swelling).
3. Serious Side Effects (Rare): Severe allergic reactions (anaphylaxis), seizures, and Clostridium difficile-associated diarrhea (severe, persistent diarrhea).

If you have concerns about side effects or adverse reactions, consult one of our telemedicine providers for further guidance.

Contraindications for Doripenem

A contraindication is a specific situation or condition where a medication should not be used because it may be harmful. If you have any of the following conditions, you should not take Doripenem or should discuss it with your healthcare provider first.

1. Allergy to Doripenem or other Carbapenem antibiotics: If you are allergic to Doripenem or other carbapenem antibiotics (such as Meropenem or Imipenem), taking this medication could cause a severe allergic reaction, which may be life-threatening.
2. Severe allergic reactions to beta-lactam antibiotics: Doripenem is a beta-lactam antibiotic. If you have had a severe allergic reaction (anaphylaxis) to other beta-lactam antibiotics like penicillins or cephalosporins, you should avoid Doripenem.
3. Severe kidney disease: Doripenem is cleared from the body by the kidneys. If you have severe kidney disease, your body may not eliminate the drug properly, leading to a buildup and potential toxicity.

Drug Interactions with Doripenem

Some medications can interact with Doripenem, increasing the risk of side effects or reducing the effectiveness of one or both drugs. Be sure to inform your healthcare provider about all medications you are taking, including over-the-counter drugs and supplements. Below are some known drug interactions with Doripenem:

1. Valproic Acid (Depakote): Doripenem can reduce valproic acid levels in your blood, increasing the risk of seizures. If you are taking valproic acid for epilepsy or bipolar disorder, your doctor may need to adjust your dose or consider alternative treatments.
2. Probenecid (Benemid): Probenecid can increase Doripenem levels in your blood by reducing its elimination through the kidneys. This can raise the risk of side effects, so your doctor may need to adjust your Doripenem dose if you are taking Probenecid.

Doripenem in Pregnancy

Is it safe to take Doripenem during pregnancy?

There is limited information regarding the safety of Doripenem during pregnancy. While animal studies have not demonstrated harm to the fetus, there are no well-controlled studies in pregnant women. Doripenem should only be used during pregnancy if the potential benefits outweigh the risks. If you are pregnant or planning to become pregnant, it is important to discuss your treatment options with your healthcare provider. You can also schedule a telemedicine visit with one of our providers to address any concerns you may have.

Doripenem while Breastfeeding

Is it safe to take Doripenem while breastfeeding?

It is not clear whether Doripenem passes into breast milk. Since many antibiotics can be excreted in breast milk and may affect a nursing infant, caution is advised. If you are breastfeeding, consult your healthcare provider to weigh the risks and benefits of taking Doripenem. Our telemedicine providers are available to help you make an informed decision based on your specific circumstances.

Estimated Cost of Doripenem

The estimated cost of a 30-day supply of Doripenem without insurance can vary depending on the pharmacy and location. With a GoodRx coupon, the cost typically ranges from $1,200 to $1,500 for a 30-day supply. Be sure to check with your pharmacy for the most accurate pricing and explore available discounts or assistance programs.

Possible Alternatives to Doripenem

If Doripenem is not suitable for you, or if you are looking for alternative treatments, there are other options available depending on the condition being treated. Always consult your healthcare provider before making any changes to your treatment plan. You can also schedule a telemedicine visit with one of our providers to explore these alternatives.

Alternatives for Specific Conditions

1. Pneumonia: Alternatives may include antibiotics such as Levofloxacin (Levaquin) or Azithromycin (Zithromax). Lifestyle changes, like quitting smoking and getting vaccinated against pneumococcal bacteria, can also help prevent pneumonia.
2. Urinary Tract Infection (UTI): Common alternatives include Nitrofurantoin (Macrobid) or Trimethoprim/Sulfamethoxazole (Bactrim). Staying hydrated and practicing good hygiene can help prevent UTIs.
3. Intra-abdominal Infection: Other antibiotics, such as Piperacillin/Tazobactam (Zosyn) or Metronidazole (Flagyl), may be used. In some cases, surgery may be necessary to treat the infection.
4. Skin and Soft Tissue Infection: Alternatives include Clindamycin (Cleocin) or Doxycycline. Keeping wounds clean and covered can help prevent infections.
5. Sepsis: Treatment often involves a combination of antibiotics, such as Vancomycin or Ceftriaxone (Rocephin), along with supportive care in a hospital setting.
6. Bacteremia: Depending on the bacteria involved, alternatives may include Cefepime or Vancomycin. Treatment usually requires hospitalization and intravenous antibiotics.
7. Meningitis: Alternatives include Ceftriaxone (Rocephin) or Vancomycin, depending on the cause of the infection. Vaccination can help prevent certain types of bacterial meningitis.
8. Endocarditis: Treatment often involves a combination of antibiotics, such as Vancomycin or Gentamicin. In some cases, surgery may be required to repair damaged heart valves.
9. Osteomyelitis: Long-term antibiotics, such as Ciprofloxacin (Cipro) or Clindamycin, may be used. In severe cases, surgery may be necessary to remove infected bone tissue.
10. Respiratory Tract Infection: Alternatives include Amoxicillin/Clavulanate (Augmentin) or Azithromycin. Lifestyle changes, such as quitting smoking and avoiding allergens, can also help manage chronic respiratory infections.

Recent Updates on Doripenem Research

Recent research on Doripenem has focused on its effectiveness in treating multidrug-resistant bacterial infections, particularly in hospital settings. Studies indicate that Doripenem remains a valuable option for treating severe infections caused by resistant bacteria, especially when other antibiotics have proven ineffective. Ongoing research is exploring new antibiotics and combination therapies to address the growing threat of antibiotic resistance. If you have questions about the latest research or how it may impact your treatment, schedule a telemedicine visit with one of our providers to discuss your options.

James Kingsley

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