unotaz 4gm/500mg injection - Piperacillin (4gm) + Tazobactum (500mg) medicine

Monal 4gm/500mg Injection: Complete Medicine Guide

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🏭 Zen Pharma Pvt Ltd 📦 Varies by brand 💊 Allopathy 📅 Updated: Sep 24, 2026
⚠️ Hepatotoxicity Risk ⚠️ Nephrotoxicity Risk 📋 Prescription Required 💊 Generic Available
Medically Reviewed
11 min read
Evidence: Well-established for approved indications.
Reviewed by
SaathiMed Expert Panel | Sep 24, 2026

When to Call Your Doctor IMMEDIATELY

  • Difficulty breathing or swelling of face, lips, or throat
  • Severe or bloody diarrhea
  • Seizures or confusion
  • Decreased urine output or swelling
  • Yellowing of skin or eyes
  • Unusual bleeding or bruising
  • Severe skin rash with blistering

If experiencing severe symptoms, call emergency services immediately.

What is unotaz 4gm/500mg injection used for?

This medicine is a combination antibiotic containing piperacillin and tazobactam, used to treat serious bacterial infections. It is given by injection in a hospital setting.

  • Generic Name: Piperacillin (4gm) + Tazobactum (500mg)
  • Manufacturer: Zen Pharma Pvt Ltd
  • Form: Allopathy
  • Pregnancy Category: Consult doctor
  • Prescription Required: Yes

🇮🇳 unotaz 4gm/500mg injection के बारे में (Hindi Summary)

उपयोग: यह दवा पाइपरासिलिन और टैज़ोबैक्टम का संयोजन है, जिसका उपयोग गंभीर जीवाणु संक्रमणों के इलाज के लिए किया जाता है। यह अस्पताल में इंजेक्शन के रूप में दी जाती है। यह निमोनिया, मूत्र मार्ग संक्रमण, पेट के संक्रमण, त्वचा संक्रमण और स्त्री रोग संबंधी संक्रमणों के लिए प्रभावी है। यह दवा केवल डॉक्टर की सलाह पर और चिकित्सकीय देखरेख में ही दी जानी चाहिए।

साइड इफेक्ट्स: आम दुष्प्रभावों में दस्त, मतली, उल्टी, सिरदर्द, अनिद्रा, दाने और इंजेक्शन स्थल पर दर्द शामिल हैं। गंभीर दुष्प्रभावों में एलर्जी, गंभीर दस्त, दौरे, रक्त विकार और गुर्दे की समस्या शामिल हो सकती है। किसी भी असामान्य लक्षण को तुरंत डॉक्टर को बताएं।

सुरक्षा सलाह: यह दवा केवल अस्पताल या क्लिनिक में प्रशिक्षित स्वास्थ्यकर्मी द्वारा दी जानी चाहिए। स्वयं इंजेक्शन न लगाएं। अपने डॉक्टर को अपनी सभी चिकित्सीय स्थितियों और दवाओं के बारे में बताएं। गुर्दे की कार्यप्रणाली और रक्त की निगरानी की जा सकती है। गंभीर दस्त, दाने या सांस लेने में कठिनाई होने पर तुरंत चिकित्सा सहायता लें।

💡 Did You Know? India has the highest number of USFDA-compliant plants outside the USA.

💊 unotaz 4gm/500mg injection Uses & Benefits

[{"condition":"Hospital-acquired pneumonia","description":"Used to treat pneumonia acquired during hospital stay, including ventilator-associated pneumonia.","evidence":"Well-established"},{"condition":"Complicated urinary tract infections","description":"Effective against complicated UTIs including pyelonephritis.","evidence":"Well-established"},{"condition":"Complicated intra-abdominal infections","description":"Used for infections such as peritonitis, appendicitis with rupture, and intra-abdominal abscesses.","evidence":"Well-established"},{"condition":"Skin and soft tissue infections","description":"Treats severe skin infections including cellulitis, abscesses, and diabetic foot infections.","evidence":"Well-established"},{"condition":"Gynecological infections","description":"Used for pelvic inflammatory disease, endometritis, and postpartum infections.","evidence":"Well-established"},{"condition":"Febrile neutropenia","description":"Empiric therapy for fever in patients with low white blood cell counts.","evidence":"Well-established"}]

Off-label uses: [{"condition":"Bacterial meningitis","description":"Sometimes used off-label when other options are not suitable, but not first-line.","evidence":"Limited"},{"condition":"Prosthetic joint infections","description":"May be used in combination with surgical debridement, but evidence is limited.","evidence":"Limited"}]

Primary treatment for: Bacterial infections

Also treats: Hospital-acquired pneumonia, Complicated urinary tract infections, Complicated intra-abdominal infections, Skin and soft tissue infections, Gynecological infections, Febrile neutropenia

📋 Drug Information

Generic Name(s)Piperacillin (4gm) + Tazobactum (500mg)
Brand Nameunotaz 4gm/500mg injection
ManufacturerZen Pharma Pvt Ltd
Packaging / FormVaries by brand (Allopathy)
Therapeutic ClassANTI INFECTIVES
Action Class
Route of AdministrationParenteral (intravenous or intramuscular injection)
StorageStore below 25°C (77°F). Protect from light and moisture. Do not freeze. Reconstituted solution should be used immediately or stored as per instructions.
Shelf Life24 months from the date of manufacture.
WHO GuidelineNot established from the available information.
ICMR GuidelineNot established from the available information.

👨‍⚕️ Doctor's Practical Tips

Evidence-based practical advice from experienced clinicians

1
Always verify patient's allergy history before administering this medicine.
2
Adjust dose in renal impairment to prevent seizures and toxicity.
3
Monitor kidney function and blood counts during therapy.
4
Watch for signs of superinfection, especially with prolonged use.
5
Ensure slow intravenous infusion over 30 minutes to avoid hypotension.
6
Educate patient to report severe diarrhea immediately.

🔍 Is This Medicine Right for Your Symptom?

Educational reference. Always consult a doctor for diagnosis.

Fever with chills
This medicine is used for serious bacterial infections that cause fever.
Likely Use
Cough with sputum
Used for hospital-acquired pneumonia.
Likely Use
Burning urination
Used for complicated urinary tract infections.
Likely Use
Abdominal pain
Used for intra-abdominal infections.
Likely Use
Skin redness and swelling
Used for skin and soft tissue infections.
Likely Use
Common cold
This medicine is not effective against viral infections.
Not Primary

🔬 How This Medicine Works (Pharmacology)

Pharmacokinetics

AbsorptionThis medicine is administered intravenously or intramuscularly; absorption is complete and immediate when given intravenously. Intramuscular administration results in rapid absorption.
DistributionPiperacillin and tazobactam distribute widely into body tissues and fluids, including lungs, skin, abdominal cavity, and gynecological tissues. Both agents have moderate protein binding.
Protein BindingPiperacillin is approximately 30% protein-bound; tazobactam is approximately 20-23% protein-bound.
MetabolismPiperacillin is partially metabolized in the liver to a desethyl metabolite. Tazobactam is metabolized to a single inactive metabolite.
Half-LifeThe elimination half-life of piperacillin is approximately 0.7-1.2 hours; tazobactam is approximately 0.7-1.0 hours in patients with normal kidney function.
ExcretionBoth piperacillin and tazobactam are primarily excreted unchanged in the urine via glomerular filtration and tubular secretion. About 68% of piperacillin and 80% of tazobactam are recovered in urine.
Bioavailability100% for intravenous administration. Intramuscular bioavailability is approximately 70-80%.
Onset of ActionRapid; bacterial killing begins within 30 minutes to 1 hour after intravenous administration.
Peak Plasma TimeImmediately after intravenous infusion; approximately 30-60 minutes after intramuscular injection.
Duration of ActionBactericidal levels persist for approximately 4-6 hours after a standard dose, depending on renal function.

How It Works

This medicine combines two active ingredients. Piperacillin is a semisynthetic penicillin that inhibits bacterial cell wall synthesis by binding to penicillin-binding proteins (PBPs), leading to bacterial lysis and death. Tazobactam is a beta-lactamase inhibitor that irreversibly binds to certain beta-lactamase enzymes produced by bacteria, preventing them from destroying piperacillin. This extends piperacillin's spectrum of activity against beta-lactamase-producing organisms.

Mechanism Steps

1
Piperacillin binds to PBPs: Piperacillin attaches to penicillin-binding proteins on the bacterial cell membrane, inhibiting the cross-linking of peptidoglycan chains needed for cell wall integrity.
2
Tazobactam inhibits beta-lactamases: Tazobactam binds irreversibly to beta-lactamase enzymes, preventing them from hydrolyzing piperacillin.
3
Bacterial cell lysis: Without a functional cell wall, the bacterium takes up water and bursts, leading to bacterial death.

💡 How to Take unotaz 4gm/500mg injection

Strength: Injection: 4 g piperacillin + 500 mg tazobactam per vial.

1This medicine is given by a healthcare professional in a hospital or clinic setting.
2It is administered as an intravenous infusion over 30 minutes or as an intramuscular injection.
3Do not attempt to self-administer this medicine.
4Follow your healthcare provider's instructions regarding dose and frequency.
5Report any side effects to your healthcare provider immediately.

Dosage Information

Adult DosageThe usual adult dose is 4.5 g (4 g piperacillin + 0.5 g tazobactam) administered intravenously every 6 to 8 hours. For severe infections, the dose may be increased to 4.5 g every 6 hours. The duration of treatment depends on the type and severity of infection. Dose must be individualized by a qualified clinician based on indication, age, weight, renal and hepatic function.
Pediatric DosagePediatric dosing is not established from available information. Consult a pediatrician.
Elderly DosageElderly patients may have reduced kidney function; dose should be adjusted based on renal function. Monitor closely for side effects.
Renal ImpairmentDose adjustment is required for patients with creatinine clearance less than 40 mL/min. For CrCl 20-40 mL/min, the usual dose is 4.5 g every 8 hours. For CrCl less than 20 mL/min, the dose is 4.5 g every 12 hours. For patients on hemodialysis, an additional dose of 2.25 g after each dialysis session is recommended. Consult a clinician for precise dosing.
Hepatic ImpairmentNo specific dose adjustment is recommended for hepatic impairment alone. However, monitor liver function closely.
Maximum Daily DoseThe maximum recommended daily dose is 18 g (16 g piperacillin + 2 g tazobactam) per day, given as 4.5 g every 6 hours.

Dosage Timeline

🌅 Morning ❌ ☀️ Afternoon ❌ 🌆 Evening ❌ 🌙 Night ❌

🍽️ Food Timing Guide

No specific food interactions
No restrictions
This medicine is given parenterally; food does not affect its absorption.

⏰ What to Do If You Miss a Dose

📌 Less than half the dosing interval has passed
→ Contact your healthcare provider to reschedule the dose.
💡 Do not attempt to self-administer.
📌 More than half the dosing interval has passed
→ Skip the missed dose and continue with the next scheduled dose.
💡 Do not double dose.

⚠️ Side Effects of unotaz 4gm/500mg injection

✅ Common Side Effects

Diarrhea (Common (5-10%))
Usually resolves without treatment. Maintain hydration. Consult doctor if persistent or severe.
Nausea (Common (3-5%))
Take with food if possible. Inform your doctor if it interferes with eating.
Headache (Common (3-5%))
Rest and stay hydrated. Consult doctor if severe or persistent.
Insomnia (Common (2-4%))
Practice good sleep hygiene. Inform your doctor if it affects daily activities.
Rash (Common (2-4%))
Report to your doctor. May indicate allergy; do not ignore.
Injection site pain (Common (2-5%))
Apply cold compress if needed. Inform nursing staff if severe.

🚨 Serious Side Effects

Anaphylaxis (Rare (<0.1%))
Seek emergency medical help immediately if you experience swelling of face, lips, throat, difficulty breathing, or severe rash.
Clostridioides difficile-associated diarrhea (Uncommon (0.1-1%))
Report severe or bloody diarrhea to your doctor immediately. Do not self-treat with anti-diarrheal medicines.
Seizures (Rare (<0.1%))
Seek immediate medical attention if you experience convulsions, confusion, or unusual movements.
Severe skin reactions (Stevens-Johnson syndrome) (Very rare (<0.01%))
Stop treatment and seek emergency care if you develop painful rash, blistering, or peeling skin.
Blood disorders (thrombocytopenia, leukopenia) (Uncommon (0.1-1%))
Your doctor will monitor blood counts. Report unusual bruising or bleeding.
Acute kidney injury (Uncommon (0.1-1%))
Report decreased urine output or swelling. Kidney function will be monitored.

⚠️ Rare Side Effects

Hepatotoxicity
Report yellowing of eyes or skin, dark urine, or abdominal pain to your doctor.
Interstitial nephritis
Seek medical attention if you experience fever, rash, and decreased urine output.
Hemolytic anemia
Report unusual fatigue, pale skin, or shortness of breath.

Consult your doctor if you experience any unusual symptoms.

🔬 Drug Interactions

Drug Severity Effect
Warfarin Major
Methotrexate Major
Probenecid Major
Gentamicin Major
Vecuronium Moderate
Oral contraceptives Moderate
Live typhoid vaccine Moderate
Furosemide Minor
Ibuprofen Minor
Allopurinol Minor

🚨 Major Interactions

  • Warfarin
  • Methotrexate
  • Probenecid
  • Aminoglycosides (e.g., gentamicin)

⚡ Moderate Interactions

  • Vecuronium
  • Oral contraceptives
  • Live vaccines

🍷 Alcohol Interaction

Alcohol may increase the risk of liver toxicity and gastrointestinal side effects. It is advisable to avoid alcohol during treatment.

🔎 Check Your Other Medicines

Educational tool. Always confirm with your doctor or pharmacist.

🛡️ Safety & Warnings

🚫 Contraindications

["Known severe allergy to penicillins, cephalosporins, or beta-lactamase inhibitors","Previous anaphylactic reaction to any beta-lactam antibiotic","Severe renal impairment without dose adjustment (relative)","Concurrent use with live bacterial vaccines"]

⚠️ Warnings & Precautions

["Serious allergic reactions can occur. Ask about previous allergies before administration.","Clostridioides difficile-associated diarrhea may occur; report severe diarrhea.","Use with caution in patients with kidney disease; dose adjustment required.","May cause seizures, especially in patients with renal impairment or CNS disorders.","Prolonged use may lead to superinfection with resistant organisms.","Monitor blood counts and liver enzymes during prolonged therapy.","Avoid in patients with a history of beta-lactam-associated severe skin reactions."]

🤱 Lactation Safety

Piperacillin and tazobactam are excreted in human milk in low amounts. Caution is advised. Consult your doctor before breastfeeding while on this medicine.

💊 Overdose Management

Overdose may cause nausea, vomiting, diarrhea, and seizures. Treatment is supportive and symptomatic. Hemodialysis may remove piperacillin and tazobactam from the blood. Contact a poison control center or emergency department immediately if overdose is suspected.

⏰ Missed Dose

This medicine is given by a healthcare professional. If you miss a scheduled dose, contact your healthcare provider as soon as possible. Do not attempt to self-administer a double dose.

Additional Safety Advice

General Safety

This medicine must be given only by a trained healthcare professional in a hospital or clinic setting. Do not attempt to self-administer. Inform your doctor about all your medical conditions, especially kidney disease, bleeding disorders, or allergies to antibiotics. Tell your doctor about all medicines you are taking, including over-the-counter drugs and herbal supplements. Your kidney function and blood counts may be monitored during treatment. If you experience severe diarrhea, rash, or difficulty breathing, seek immediate medical attention. Do not skip doses or stop treatment early, as this can lead to resistance and treatment failure. Follow your doctor's instructions carefully.

👴 Special Considerations for Elderly

💡 For Patients Above 65

Elderly patients are more likely to have reduced kidney function and may require dose adjustment. They are also at higher risk of seizures and should be monitored closely.

🤰 Pregnancy Planning (TTC)

If you are planning pregnancy, consult your doctor before starting this medicine. It should be used during pregnancy only if clearly needed.

🏥 Post-Surgery Considerations

This medicine is often used to prevent or treat infections after surgery. Follow your surgeon's instructions regarding dose and duration.

🦷 Dental Procedures

Inform your dentist if you are on this medicine. It may interact with certain dental procedures or medications. Your dentist may consult your doctor before proceeding.

💚 Lifestyle Tips for Better Results

🏃
Stay well hydrated to help flush out the infection.
🥗
Get plenty of rest to support your immune system.
😴
Eat a balanced diet rich in fruits and vegetables.
💧
Practice good hand hygiene to prevent reinfection.
🧘
Avoid alcohol during treatment.
🌞
Complete the full course as prescribed.

🏋️ Exercise Considerations

Avoid strenuous exercise during treatment as your body needs rest to fight infection. Light activity like walking is fine if you feel up to it.

🥗 Diet Recommendations

Include probiotic-rich foods like yogurt to prevent diarrhea.
Stay well hydrated.
Eat easily digestible foods if you have nausea.
Avoid spicy and oily foods if you have stomach upset.

💼 Impact on Daily Work & Life

You may need to stay in the hospital during treatment. Driving and operating machinery should be avoided if you experience dizziness or seizures. Plan for time off work as advised by your doctor.

🛑 When to Stop This Medicine

Do not stop this medicine without consulting your doctor. Stopping early can lead to treatment failure and resistance. Your doctor will decide when to stop based on your clinical response.

📅 Long-Term Use Effects

Prolonged use may lead to superinfection with resistant organisms, fungal infections, and Clostridioides difficile-associated diarrhea. Regular monitoring of kidney and liver function is advised. When to review: if symptoms persist or new symptoms arise.

🌿 Non-Medicine Approaches

These can complement medicine but do not replace prescribed treatment.

Other antibiotics

Depending on the infection and culture results, other antibiotics like carbapenems or cephalosporins may be used.

Evidence: Well-established
Surgical drainage

For abscesses, surgical drainage may be needed in addition to antibiotics.

Evidence: Well-established

💉 Vaccination Considerations

💉 If You're Getting Vaccinated

Live bacterial vaccines (e.g., typhoid) should be avoided during treatment as the antibiotic may reduce their efficacy. Inactivated vaccines are generally safe.

📦 Storage Guide

✅ DO

Store below 25°C (77°F)

❌ DON'T

Do not freeze

✅ DO

Keep in original container

❌ DON'T

Do not transfer to unmarked containers

✅ DO

Protect from light and moisture

❌ DON'T

Do not store in bathroom cabinet

✈️ Traveling with This Medicine

This medicine is given in a hospital setting, so travel is not applicable. If you are traveling after treatment, carry a copy of your prescription and medical records. Store any remaining medication as directed. Consult your doctor before travel if you have ongoing infection.

💰 Cost Analysis & Savings

👥 Real Patient Stories

Educational, anonymized scenarios. Individual results may vary.

👤 A 65-year-old man with hospital-acquired pneumonia
He was started on this medicine intravenously. His fever subsided within 48 hours, and his breathing improved over 5 days. He experienced mild diarrhea, which was managed with hydration. He completed a 7-day course and recovered fully.
💡 Lesson: This medicine is effective for serious infections but requires monitoring for side effects like diarrhea.
👤 A 45-year-old woman with complicated urinary tract infection
She received this medicine intravenously for 3 days, followed by oral antibiotics. Her symptoms improved rapidly. She reported no major side effects except mild nausea.
💡 Lesson: Timely administration and completion of therapy are key to successful treatment.

💬 Questions Patients Often Ask

Q: How long does it take to work?

A: Improvement in symptoms may be seen within 24-48 hours, but complete recovery depends on the infection and may take several days.

Q: Can I take this medicine orally?

A: No, this medicine is only available as an injection and must be given by a healthcare professional.

Q: Is it safe in pregnancy?

A: It should be used only if clearly needed and prescribed by a doctor. Consult your doctor for personalized advice.

Q: What are the common side effects?

A: Common side effects include diarrhea, nausea, headache, and rash. Most are mild and temporary.

🤔 Common Patient Concerns

💭 These are the concerns patients most commonly raise

  • Can I take this medicine at home?
  • How long will I need this injection?
  • Will it affect my kidney function?
  • Can I breastfeed while on this medicine?
  • What if I miss a dose?
  • Does it interact with my other medicines?

🔄 Substitutes for unotaz 4gm/500mg injection

View All

Alternative brands with exact same active ingredient:

Medical Note: Always consult your doctor before switching medications.

🛑 Myths vs. Facts

  • Myth: This medicine can be taken orally.
    Fact: This medicine is only available as an injection and must be given by a healthcare professional.
  • Myth: This medicine is safe for everyone.
    Fact: It is not safe for individuals with a known allergy to penicillins or beta-lactam antibiotics.
  • Myth: You can stop treatment once you feel better.
    Fact: You must complete the full course as prescribed to prevent resistance and relapse.

🔄 Alternative Options

Generic Alternatives

  • Piperacillin and Tazobactam Injection

Brand Alternatives

  • Monal 4gm/500mg Injection

📊 Comparison with Similar Medicines

[{"medicine":"This medicine","class":"Penicillin/beta-lactamase inhibitor","route":"Parenteral","common_use":"Serious bacterial infections"},{"medicine":"Cefoperazone and Sulbactam","class":"Cephalosporin/beta-lactamase inhibitor","route":"Parenteral","common_use":"Serious bacterial infections"},{"medicine":"Meropenem","class":"Carbapenem","route":"Parenteral","common_use":"Serious bacterial infections"}]

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