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Tazowin Injection

Written By Dr. Syeda Aafia, MBA, BDS
Reviewed By Dr. Mekhala Chandra, MD, MBBS
Last updated on 18 Jan 2026 | 05:34 PM (IST)
Tazowin Injection is a pain-relieving medicine. It is used to manage persistent, moderate to severe chronic pain that requires continuous, around-the-clock treatment for an extended period of time.
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General Information

Contains

Pentazocine (30mg/ml)

Marketer

Themis Medicare Ltd

Storage

Store below 30°C
The content is shown in English
Tazowin Injection image
Tazowin Injection image

Product introduction

Tazowin Injection is generally administered by a doctor or a nurse in a clinical setting. You should not self-administer this medicine at home. The dose and duration will depend on what you are taking it for and how well it helps your symptoms.


The most common side effects of this medicine include injection site reactions (such as pain, redness, and swelling), headache, drowsiness, fatigue, vomiting, constipation, dry mouth, and sweating. If any of these side effects persist or get worse, you should let your doctor know. Your doctor may be able to suggest ways of preventing or reducing the symptoms.


Before using it, you should let your doctor know if you have problems with your heart, liver, or kidneys. Let your doctor also know about all the other medicines you are taking because they may affect, or be affected by, this medicine.


If you are pregnant or breastfeeding, it is important to ask the advice of your doctor before taking this medicine. Your doctor may also regularly monitor your kidney function, liver function, and levels of blood components if you are taking this medicine for long-term treatment.

Uses of Tazowin Injection

  • Treatment of Moderate to severe pain

Benefits of Tazowin Injection

Treatment of Moderate to severe pain
Tazowin Injection helps relieve moderate to severe pain, especially when milder pain-relieving medicines are not effective. It reduces the pain signals and helps improve comfort and allows better movement, making it easier to carry out daily activities. It is generally administered by a doctor or a nurse, and the dose and duration are decided by the doctor based on the individual’s condition.

Side effects of Tazowin Injection

Most side effects do not require any medical attention and disappear as your body adjusts to the medicine. Consult your doctor if they persist or if you’re worried about them
Common side effects of Tazowin
  • Headache
  • Drowsiness
  • Fatigue
  • Vomiting
  • Constipation
  • Sweating
  • Dryness in mouth
  • Injection site reactions (pain, swelling, redness)

How to use Tazowin Injection

Your doctor or nurse will give you this medicine. Kindly do not self administer.

How Tazowin Injection works

Tazowin Injection is an opioid analgesic (pain reliever) which works by blocking the transmission of pain signals to the brain to lower pain perception.

Quick tips

  • Use Tazowin Injection as instructed by your doctor. Never take in greater amounts or more often than prescribed.
  • It causes sleepiness or drowsiness. If this happens to you, do not drive or use machinery.
  • Avoid consuming alcohol when taking the Tazowin Injection, as it may cause excessive sleepiness or drowsiness.
  • Inform your doctor if you have ever been diagnosed with kidney or liver problems.
  • Store opioid pain relievers in a safe place and out of reach of others.

Safety advice

Alcohol

Alcohol

UNSAFE
Do not drink alcohol while you are taking this medicine. Tazowin Injection may cause excessive drowsiness when taken with alcohol.
Pregnancy

Pregnancy

CONSULT YOUR DOCTOR
Tazowin Injection is not recommended during pregnancy as there is positive evidence of fetal risk based on animal studies. However, it may still be prescribed by a doctor in situations where the benefits outweigh the risks.
Breast feeding

Breast feeding

CONSULT YOUR DOCTOR
Tazowin Injection may be unsafe to use during breastfeeding. Limited human data suggests that the drug may pass into the breastmilk and harm the baby. It should be used only if the expected benefit outweighs the potential risk. Please consult your doctor.
Driving

Driving

UNSAFE
Tazowin Injection may decrease alertness, affect your vision, or make you feel sleepy and dizzy. Do not drive if these symptoms occur.
Kidney

Kidney

CAUTION
Tazowin Injection should be used with caution in patients with kidney disease. Dose adjustment may be needed.
Liver

Liver

CAUTION
Tazowin Injection should be used with caution in patients with liver disease. Dose adjustment may be needed.

Interaction with drugs

Taking Tazowin with any of the following medicines can modify the effect of either of them and cause some undesirable side effects
Life-threatening

Selegiline (Oral Route)

Do not consume Selegiline with Pentazocine. If essential, watch out for symptoms such as fever, tremors, diarrhea or agitation. Please consult your doctor.
Life-threatening

Naltrexone (Oral Route)

Do not consume Naltrexone with Pentazocine; watch out for symptoms such as breathlessness, increased heart rate, or headache. Naltrexone may reduce efficacy of Pentazocine.
Severe

Ziprasidone (Oral Route)

Watch out for symptoms such as tremors, fever, diarrhea or agitation and consult your doctor if you experience them. Your doctor may discontinue the medicines accordingly.
Severe

Alprazolam (Oral Route)

If concurrent use is essential, watch out for symptoms of Alprazolam side effects such as drowsiness, excessive sedation, tiredness, dizziness or slurred speech and consult your doctor if you experience them. They may adjust the dose of Alprazolam as per the observations. It is advised to avoid driving or undertaking other tasks requiring skill and alertness.
Severe

Alprazolam (Injection Route)

If concurrent use is essential, watch out for symptoms of Alprazolam side effects such as drowsiness, excessive sedation, tiredness, dizziness or slurred speech and consult your doctor if you experience them. They may adjust the dose of Alprazolam as per the observations. It is advised to avoid driving or undertaking other tasks requiring skill and alertness.

Frequently asked questions

Tazowin Injection is used to relieve moderate to severe pain, especially when other pain-relieving medicines are not sufficient. It is commonly used in hospital or clinical settings under medical supervision.
Tazowin Injection works by changing the way the brain and nervous system respond to pain. It acts on opioid receptors to reduce the perception of pain and provide relief.
Tazowin Injection is administered by a doctor or nurse into a muscle, under the skin, or directly into a vein. The dose and frequency depend on the severity of pain and the patient’s response. It should not be self-administered.
Tazowin Injection should not be used in people with severe breathing problems, head injury, raised intracranial pressure, acute asthma, heart failure due to chronic lung disease, or in those with known allergy to pentazocine. It is also contraindicated in acute alcoholism.

Fact Box

Chemical Class

Benzomorphan derivative

Habit Forming

Yes

Therapeutic Class

PAIN ANALGESICS

Action Class

Opioids

References

  1. Yaksh TL, WallaceIn MS. Opioids, Analgesia, and Pain Management. In: Brunton LL, Chabner BA, Knollmann BC, editors. Goodman & Gilman’s: The Pharmacological Basis of Therapeutics. 12th ed. New York, New York: McGraw-Hill Medical; 2011. p. 509.
  2. Briggs GG, Freeman RK, editors. A Reference Guide to Fetal and Neonatal Risk: Drugs in Pregnancy and Lactation. 10th ed. Philadelphia, PA: Wolters Kluwer Health; 2015. pp. 1085-87.
  3. Central Drugs Standard Control Organisation (CDSCO). [Accessed 02 Apr. 2019] (online) Available from:
  4. Pentazocine [Summary of Product Characteristics]. Pigdamber, Indore: Alpa Laboratories Limited.
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User feedback

Once A Day
67%
Twice A Day
22%
Twice A Week
11%
Others
67%
Severe bacterial infections
33%
Excellent
60%
Poor
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Average
7%
No Side Effect
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With food
67%
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Disclaimer

Tata 1mg's sole intention is to ensure that its consumers get information that is expert-reviewed, accurate and trustworthy. However, the information contained herein should NOT be used as a substitute for the advice of a qualified physician. The information provided here is for informational purposes only. This may not cover everything about particular health conditions, lab tests, medicines, all possible side effects, drug interactions, warnings, alerts, etc. Please consult your doctor and discuss all your queries related to any disease or medicine. We intend to support, not replace, the doctor-patient relationship.

Marketer details

Name: Themis Medicare Ltd
Address: 11/12, Udyog Nagar, S. V. Road, Goregaon (W), Mumbai- 400104.

Vendor Details

Country of origin: India

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