anawin heavy 5mg injection - Bupivacaine (5mg) medicine

Anawin Heavy 5mg Injection: Complete Medicine Guide

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Bupivacaine (5mg)
🏭 Neon Laboratories Ltd 📦 Varies by brand 💊 Allopathy 📅 Updated: Sep 23, 2026
📋 Prescription Required 💊 Generic Available
Medically Reviewed
11 min read
Evidence: Well-established for surgical anaesthesia.
Reviewed by
SaathiMed Expert Panel | Sep 23, 2026

When to Call Your Doctor IMMEDIATELY

  • Severe chest pain or palpitations
  • Difficulty breathing or shortness of breath
  • Seizures or convulsions
  • Sudden severe headache with neck stiffness
  • Loss of consciousness
  • Numbness or weakness in the legs that does not resolve
  • Difficulty in urination or bowel movements

If experiencing severe symptoms, call emergency services immediately.

What is anawin heavy 5mg injection used for?

This medicine is a hyperbaric local anaesthetic injection containing bupivacaine 5 mg. It is used for spinal, epidural, and peripheral nerve blocks to provide surgical anaesthesia and pain relief. It works by blocking sodium channels in nerves, preventing pain signals from reaching the brain. It must be administered only by a qualified anaesthesiologist.

  • Generic Name: Bupivacaine
  • Manufacturer: Neon Laboratories Ltd
  • Form: Allopathy
  • Pregnancy Category: Consult doctor
  • Prescription Required: Yes

🇮🇳 anawin heavy 5mg injection के बारे में (Hindi Summary)

उपयोग: यह दवा बुपिवाकेन 5 मिलीग्राम का इंजेक्शन है, जिसका उपयोग स्पाइनल, एपिड्यूरल और पेरिफेरल नर्व ब्लॉक के लिए किया जाता है। यह सर्जरी के दौरान दर्द को रोकने और शरीर के निचले हिस्से को सुन्न करने में मदद करती है। यह दवा केवल योग्य एनेस्थेसियोलॉजिस्ट द्वारा ही दी जानी चाहिए।

साइड इफेक्ट्स: इस दवा के सामान्य दुष्प्रभावों में निम्न रक्तचाप, धीमी हृदय गति, मतली, उल्टी और पीठ दर्द शामिल हैं। गंभीर दुष्प्रभाव दुर्लभ हैं लेकिन इनमें हृदय गति रुकना, दौरे और तंत्रिका संबंधी समस्याएं हो सकती हैं।

सुरक्षा सलाह: यह दवा केवल अस्पताल में योग्य डॉक्टर द्वारा दी जानी चाहिए। इससे पहले कि आपको यह दवा दी जाए, अपने डॉक्टर को अपनी सभी स्वास्थ्य समस्याओं और दवाओं के बारे में बताएं। प्रक्रिया के बाद, किसी भी असामान्य लक्षण जैसे सिरदर्द, सुन्नपन या कमजोरी की रिपोर्ट तुरंत करें।

💡 Did You Know? The first generic medicine was introduced in India in 1970 after the Patents Act was amended.

💊 anawin heavy 5mg injection Uses & Benefits

[{"condition":"Spinal anaesthesia for caesarean section","description":"Provides rapid, reliable surgical anaesthesia for lower abdominal and pelvic procedures, including caesarean delivery.","evidence":"Well-established"},{"condition":"Lower abdominal surgery","description":"Used for procedures such as hernia repair, appendectomy, and gynaecological surgeries.","evidence":"Well-established"},{"condition":"Urological procedures","description":"Provides anaesthesia for transurethral resection of prostate and bladder surgeries.","evidence":"Well-established"},{"condition":"Orthopaedic procedures on lower limbs","description":"Used for hip and knee surgeries, often combined with general anaesthesia or sedation.","evidence":"Well-established"},{"condition":"Peripheral nerve blocks","description":"Provides regional anaesthesia for upper and lower limb surgeries when appropriate.","evidence":"Well-established"}]

Off-label uses: [{"condition":"Chronic pain management","description":"Occasionally used for diagnostic or therapeutic nerve blocks in chronic pain syndromes.","evidence":"Limited"},{"condition":"Obstetric analgesia","description":"Epidural infusion for labour pain relief, though specific hyperbaric formulations are not typically used for this indication.","evidence":"Limited"}]

Primary treatment for: Surgical anaesthesia

Also treats: Labour pain, Chronic pain, Postoperative pain

📋 Drug Information

Generic Name(s)Bupivacaine
Brand NameAnawin Heavy 5mg Injection
ManufacturerNeon Laboratories Ltd
Packaging / FormVaries by brand (Allopathy)
Therapeutic ClassPAIN ANALGESICS
Action ClassLocal anaesthetic (Amides)
Route of AdministrationIntrathecal (spinal), epidural, and peripheral nerve block. This medicine is for injection only and must be administered by a qualified healthcare professional
StorageStore below 25°C, protected from light. Do not freeze. Keep in the original container until use. Once opened, use immediately and discard any unused portion.
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 aspirate before injecting to avoid accidental intravascular administration.
2
Monitor the patient's vital signs continuously during and after the procedure.
3
Use the lowest effective dose to minimise the risk of systemic toxicity.
4
Be prepared to manage local anaesthetic systemic toxicity with lipid emulsion.
5
Adjust the dose in elderly and debilitated patients.
6
Ensure proper patient positioning to control the level of the spinal block.
7
Document the dose, site, and time of administration accurately.

🔍 Is This Medicine Right for Your Symptom?

Educational reference. Always consult a doctor for diagnosis.

✅
Surgical pain
This medicine is used to provide anaesthesia during surgery.
Likely Use
✅
Labour pain
This medicine can be used for epidural analgesia during labour.
Likely Use
❌
Chronic back pain
This medicine is not typically used for chronic back pain.
Not Primary

🔬 How This Medicine Works (Pharmacology)

Pharmacokinetics

AbsorptionThis medicine is administered directly into the cerebrospinal fluid or near nerve tissue, so there is no absorption phase from the gastrointestinal tract. Systemic absorption occurs from the injection site into the bloodstream, the rate of which depends on the vascularity of the tissue and the dose administered.
DistributionAfter injection, bupivacaine is distributed throughout the body, with high concentrations initially in well-perfused organs such as the brain, heart, liver, and kidneys. It crosses the placenta and can be found in fetal blood. The volume of distribution is approximately 0.5–1.0 L/kg in adults.
Protein BindingBupivacaine is approximately 95% bound to plasma proteins, primarily alpha-1-acid glycoprotein and albumin. The free fraction increases in conditions such as acidosis, which can enhance toxicity.
MetabolismBupivacaine is extensively metabolised in the liver by cytochrome P450 enzymes, primarily CYP3A4, through aromatic hydroxylation and N-dealkylation. The main metabolite, pipecoloxylidide, has some local anaesthetic activity but is less potent than the parent drug.
Half-LifeThe elimination half-life of bupivacaine in adults is approximately 2.7 to 3.5 hours. In neonates and elderly patients, the half-life may be prolonged due to reduced hepatic metabolism.
ExcretionMetabolites of bupivacaine are excreted primarily in the urine, with only a small amount (about 5-6%) of unchanged drug excreted in urine. Renal clearance is not a major route of elimination for the parent drug.
BioavailabilityNot applicable for this route of administration. The drug is placed directly at the site of action, so systemic bioavailability is not a relevant parameter.
Onset of ActionFor spinal anaesthesia, the onset of sensory block is typically within 2 to 5 minutes, and motor block within 5 to 10 minutes. For epidural and peripheral nerve blocks, onset may be slightly longer, usually 10 to 20 minutes.
Peak Plasma TimePeak plasma concentrations after spinal anaesthesia are typically reached within 10 to 30 minutes, depending on the dose and vascularity of the injection site.
Duration of ActionThe duration of surgical anaesthesia with this medicine is typically 2 to 3 hours for spinal anaesthesia, and up to 4 to 6 hours for peripheral nerve blocks. The duration may be prolonged with higher doses or the addition of vasoconstrictors like adrenaline.

How It Works

This medicine works by blocking voltage-gated sodium channels in the nerve cell membrane. Bupivacaine binds to the intracellular portion of the sodium channel, preventing sodium influx and thereby inhibiting depolarisation and propagation of action potentials. This results in reversible loss of sensation and motor function in the area supplied by the affected nerves. The hyperbaric nature of the solution, due to the addition of glucose, causes it to sink in cerebrospinal fluid, allowing the anaesthesiologist to control the level of the block by adjusting the patient's position.

Mechanism Steps

1
Injection and distribution: This medicine is injected into the subarachnoid space, epidural space, or around a peripheral nerve. The hyperbaric solution settles in the lower spinal canal when the patient is in a sitting or head-up position.
2
Binding to sodium channels: Bupivacaine molecules diffuse into nerve tissue and bind to the intracellular side of voltage-gated sodium channels.
3
Blockade of sodium influx: The bound drug stabilises the channel in an inactivated state, preventing sodium ions from entering the neuron.
4
Inhibition of depolarisation: Without sodium influx, the nerve cell cannot depolarise, and action potentials cannot be generated or propagated.
5
Reversible anaesthesia: The block is reversible as the drug gradually diffuses away from the nerve, restoring normal nerve function.

💡 How to Take anawin heavy 5mg injection

Strength: Injection: 5 mg/mL (0.5%) hyperbaric solution in 2 mL and 4 mL ampoules.

1This medicine is administered by a qualified anaesthesiologist in a hospital or surgical centre.
2The patient is positioned appropriately (sitting or lateral decubitus) for the specific block.
3The skin is cleaned with an antiseptic solution, and a local anaesthetic may be injected to numb the area.
4The anaesthesiologist inserts the needle into the subarachnoid or epidural space and injects the calculated dose.
5The patient is monitored closely for vital signs and any adverse effects during and after the procedure.

Dosage Information

Adult DosageThe dose of this medicine varies depending on the type of block, the surgical procedure, and the patient's physical status. For spinal anaesthesia, a typical adult dose is 2-3 mL (10-15 mg) of the 0.5% hyperbaric solution, but the exact dose must be individualized by a qualified clinician based on indication, age, weight, renal and hepatic function, and the desired level of block. For epidural anaesthesia, doses range from 10-20 mL of 0.25-0.5% solution. Peripheral nerve blocks may require 5-30 mL of 0.25-0.5% solution. This is for educational reference only; the actual dose is determined by the anaesthesiologist.
Pediatric DosagePediatric dosing is not established from available information. Consult a pediatrician or pediatric anaesthesiologist.
Elderly DosageElderly patients may require lower doses due to reduced hepatic metabolism and increased sensitivity to the effects of bupivacaine. Dose reduction and careful monitoring are advised.
Renal ImpairmentNo specific dose adjustment is provided in the labeling for renal impairment. However, caution is advised in severe renal impairment as metabolites may accumulate. Monitor for signs of toxicity.
Hepatic ImpairmentIn patients with severe hepatic impairment, the elimination half-life of bupivacaine is prolonged. Dose reduction and extended monitoring are recommended.
Maximum Daily DoseThe maximum recommended single dose for spinal anaesthesia is 20 mg (4 mL of 0.5% solution). For epidural and peripheral nerve blocks, the maximum dose is 2 mg/kg (up to 150 mg) without adrenaline, and 2.5 mg/kg (up to 225 mg) with adrenaline. These limits should not be exceeded.

Dosage Timeline

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

🍽️ Food Timing Guide

Before procedure
Follow fasting instructions
To prevent aspiration during anaesthesia.
After procedure
Start with clear liquids
To prevent nausea and vomiting.

⏰ What to Do If You Miss a Dose

📌 This medicine is given as a single dose in a hospital setting.
→ Missed dose instructions are not applicable.
💡 The dose is administered by a healthcare professional.

⚠️ Side Effects of anawin heavy 5mg injection

✅ Common Side Effects

Hypotension (Common (10-30%))
Usually managed with intravenous fluids and vasopressors by the anaesthesiologist. Report any dizziness or lightheadedness.
Bradycardia (Common (5-15%))
Monitor heart rate. Atropine may be administered if symptomatic.
Nausea and vomiting (Common (10-20%))
Antiemetics can be given. Avoid sudden movements.
Back pain (Common (5-10%))
Usually resolves within a few days. Use paracetamol if needed.
Headache (Common (5-10%))
May be post-dural puncture headache. Lie flat and increase fluid intake. Consult doctor if severe.

🚨 Serious Side Effects

High spinal block (Rare (<1%))
Requires immediate ventilatory support and cardiovascular resuscitation. This is a medical emergency.
Cardiac arrest (Rare (<0.1%))
Requires immediate cardiopulmonary resuscitation and advanced cardiac life support.
Seizures (Rare (<0.1%))
Administer oxygen, benzodiazepines, and supportive care. Seek emergency medical help.
Persistent neurological deficit (e.g., cauda equina syndrome, arachnoiditis) (Very rare (<0.01%))
Requires urgent neurological evaluation and imaging. Report any numbness, weakness, or bowel/bladder dysfunction.
Severe allergic reaction (anaphylaxis) (Very rare (<0.01%))
Administer adrenaline, corticosteroids, and antihistamines immediately. Seek emergency care.

⚠️ Rare Side Effects

Transient radiculopathy
Usually resolves spontaneously. Consult a neurologist if persistent.
Meningitis (aseptic)
Requires medical evaluation and supportive care.
Methemoglobinemia
Administer methylene blue if diagnosed. Seek emergency care.

Consult your doctor if you experience any unusual symptoms.

🔬 Drug Interactions

Drug Severity Effect
Lidocaine Major
Warfarin Moderate
Metoprolol Moderate
Ketoconazole Moderate
Morphine Moderate
Amlodipine Moderate
Cimetidine Minor
Ranitidine Minor
Adrenaline Minor
Phenytoin Moderate

🚨 Major Interactions

  • Other local anaesthetics (e.g., lidocaine, ropivacaine)
  • Class I antiarrhythmics (e.g., lidocaine, mexiletine)
  • Beta-blockers
  • CYP3A4 inhibitors (e.g., ketoconazole, ritonavir)

⚡ Moderate Interactions

  • Opioids
  • Anticoagulants (e.g., warfarin, heparin)
  • Antihypertensives

🍷 Alcohol Interaction

Alcohol should be avoided before and after receiving this medicine, as it can exacerbate hypotension, dizziness, and drowsiness. It may also increase the risk of liver toxicity due to additive effects on hepatic metabolism.

🔎 Check Your Other Medicines

Educational tool. Always confirm with your doctor or pharmacist.

🛡️ Safety & Warnings

🚫 Contraindications

["Known hypersensitivity to bupivacaine or other amide local anaesthetics","Severe hypovolaemia (low blood volume)","Coagulopathy or bleeding disorders","Local infection at the injection site","Increased intracranial pressure","Severe aortic stenosis","Septicemia"]

⚠️ Warnings & Precautions

["This medicine must be administered only by trained anaesthesiologists in a facility equipped for resuscitation.","Avoid accidental intravascular injection; aspirate before injecting.","Use with caution in patients with cardiac disease, hepatic impairment, or renal impairment.","Monitor for signs of local anaesthetic systemic toxicity (LAST).","The hyperbaric solution should be used with caution in patients with spinal deformities or previous spinal surgery.","Do not use if the solution is discoloured or contains particles.","Resuscitation equipment and drugs must be immediately available."]

🤱 Lactation Safety

Bupivacaine is excreted in breast milk in small amounts. The amount is generally considered too low to be harmful to a nursing infant. However, caution is advised, and the infant should be monitored for any signs of lethargy or poor feeding.

💊 Overdose Management

Overdose with bupivacaine can cause severe cardiovascular and central nervous system toxicity. Management includes immediate discontinuation of injection, maintenance of airway and ventilation with 100% oxygen, and cardiovascular support with fluids, vasopressors, and inotropes. Seizures should be treated with benzodiazepines. Intravenous lipid emulsion (20% lipid emulsion) may be used as an antidote for severe systemic toxicity. Continuous monitoring and supportive care in an intensive care unit are essential.

⏰ Missed Dose

This medicine is administered as a single dose by a healthcare professional in a controlled setting. Missed dose instructions are not applicable.

Additional Safety Advice

General Safety

This medicine must be administered only by a qualified anaesthesiologist in a properly equipped medical facility. Patients should inform their doctor about all medical conditions, especially heart, liver, or kidney problems, and any history of allergic reactions to local anaesthetics. It is important to disclose all medications being taken, including blood thinners, as they may increase the risk of bleeding. After the procedure, patients should remain under observation as advised and report any unusual symptoms such as severe headache, numbness, weakness, or difficulty in urination. Driving or operating heavy machinery should be avoided until full sensation and motor function return. Alcohol should be avoided as it can worsen side effects like dizziness and low blood pressure.

👴 Special Considerations for Elderly

💡 For Patients Above 65

Elderly patients may be more sensitive to the effects of this medicine and may require lower doses. Close monitoring of vital signs and neurological status is recommended.

🤰 Pregnancy Planning (TTC)

If you are planning to become pregnant, discuss with your doctor before receiving this medicine. It is commonly used during caesarean sections and is considered safe when administered by a qualified professional.

🏥 Post-Surgery Considerations

After surgery, you will be monitored for any complications. Follow your doctor's instructions regarding wound care, activity, and follow-up appointments. Report any signs of infection, severe pain, or neurological symptoms immediately.

🦷 Dental Procedures

This medicine is not typically used for dental procedures. Other local anaesthetics like lidocaine are more commonly used in dentistry.

💚 Lifestyle Tips for Better Results

🏃
Follow your doctor's advice on activity restrictions after the procedure.
🥗
Stay well hydrated to help flush out the medicine.
😴
Avoid alcohol for at least 24 hours after the procedure.
💧
Get plenty of rest to aid recovery.
🧘
Report any unusual symptoms to your doctor immediately.

🏋️ Exercise Considerations

Avoid strenuous exercise or heavy lifting for at least 24-48 hours after the procedure. Gradually resume normal activities as advised by your doctor. Listen to your body and stop if you feel pain or dizziness.

🥗 Diet Recommendations

Start with clear liquids and light meals after the procedure.
Avoid heavy, greasy foods until you feel fully recovered.
Stay well hydrated with water and oral rehydration solutions.
Include fruits and vegetables to aid recovery.

💼 Impact on Daily Work & Life

You should not drive or operate heavy machinery for at least 24 hours after receiving this medicine. Avoid making important decisions until the effects have fully worn off. Plan to take a day off work to recover.

🛑 When to Stop This Medicine

This medicine is given as a single dose by a healthcare professional, so you do not need to stop it yourself. If you experience any severe side effects, inform your doctor immediately.

📅 Long-Term Use Effects

Long-term effects of this medicine are not well established as it is typically used for single-dose procedures. Rarely, persistent neurological deficits such as cauda equina syndrome or arachnoiditis have been reported. Regular follow-up with your doctor is recommended if you experience any persistent symptoms.

🌿 Non-Medicine Approaches

These can complement medicine but do not replace prescribed treatment.

General anaesthesia

An alternative for patients who cannot receive spinal or epidural anaesthesia.

Evidence: Well-established
Peripheral nerve blocks with other local anaesthetics

Ropivacaine or levobupivacaine may be used as alternatives with a lower cardiotoxicity risk.

Evidence: Well-established

💉 Vaccination Considerations

💉 If You're Getting Vaccinated

There are no specific vaccine interactions with this medicine. However, inform your doctor about your vaccination history before any procedure.

📦 Storage Guide

✅ DO

Store below 25°C

❌ DON'T

Do not freeze

✅ DO

Keep in original container

❌ DON'T

Do not transfer to unmarked containers

✅ DO

Protect from light

❌ DON'T

Do not use if discoloured

✈️ Traveling with This Medicine

This medicine is administered only in a hospital setting, so travel advice is not applicable. If you are travelling after a procedure that used this medicine, carry a copy of your discharge summary and prescription. Avoid driving or operating machinery until full recovery. Keep the injection site clean and dry. Follow your doctor&#039;s advice regarding activity restrictions.

💰 Cost Analysis & Savings

👥 Real Patient Stories

Educational, anonymized scenarios. Individual results may vary.

👤 A 32-year-old woman undergoing elective caesarean section
She received this medicine for spinal anaesthesia. The procedure was successful, and she experienced no pain during the surgery. She had mild hypotension which was managed with fluids and a vasopressor. She recovered fully within a few hours and was able to breastfeed her baby without any issues.
💡 Lesson: This medicine provides effective anaesthesia for caesarean sections with proper monitoring and management of side effects.
👤 A 65-year-old man with severe knee osteoarthritis undergoing total knee replacement
He received this medicine for spinal anaesthesia. The surgery went smoothly, and he had good pain relief for several hours postoperatively. He experienced mild nausea which was treated with an antiemetic. He was advised to stay hydrated and rest.
💡 Lesson: This medicine is effective for orthopaedic surgeries in elderly patients, but lower doses and careful monitoring are essential.

💬 Questions Patients Often Ask

Q: How long does it take to work?

A: This medicine starts working within 2-5 minutes after injection for spinal anaesthesia.

Q: How long will the effect last?

A: The anaesthetic effect typically lasts 2-3 hours for spinal anaesthesia, and up to 4-6 hours for nerve blocks.

Q: Will I feel any pain during the procedure?

A: No, this medicine blocks pain sensation in the operated area, so you should not feel pain during the procedure.

Q: Can I breastfeed after receiving this medicine?

A: Yes, this medicine is considered safe during breastfeeding as only small amounts pass into breast milk.

🤔 Common Patient Concerns

💭 These are the concerns patients most commonly raise

  • Can I take this medicine at home?
  • How long will the numbness last?
  • Will I be awake during the procedure?
  • Is it safe for my baby if I am pregnant?
  • What are the risks of this medicine?
  • Can I drive after the procedure?

🔄 Substitutes for anawin heavy 5mg 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 self-administered.
    Fact: This medicine must only be administered by a trained anaesthesiologist in a medical facility.
  • Myth: This medicine is safe for everyone.
    Fact: It is contraindicated in certain conditions such as severe hypovolaemia and coagulopathy.
  • Myth: This medicine causes permanent paralysis.
    Fact: Permanent neurological deficits are extremely rare. Most effects are temporary and resolve completely.

🔄 Alternative Options

Generic Alternatives

  • Bupivacaine 5 mg/mL injection (hyperbaric)

Brand Alternatives

  • Anawin Heavy 5mg Injection

📊 Comparison with Similar Medicines

[{"medicine":"Bupivacaine","onset":"2-5 min","duration":"2-3 hours","cardiotoxicity":"Higher"},{"medicine":"Ropivacaine","onset":"5-10 min","duration":"2-4 hours","cardiotoxicity":"Lower"},{"medicine":"Levobupivacaine","onset":"5-10 min","duration":"2-4 hours","cardiotoxicity":"Lower"}]

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