benzonac gel - Diclofenac (3% w/w) + Benzocaine (20% w/w) medicine

Benzonac Gel: Comprehensive Medicine Guide

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🏭 Stedman Pharmaceuticals Pvt Ltd 📦 Varies by brand 💊 Allopathy 📅 Updated: Oct 22, 2026
⚠️ Nephrotoxicity Risk 📋 Prescription Required 💊 Generic Available
Medically Reviewed
11 min read
Evidence: Well-established for topical diclofenac in musculoskeletal pain; benzocaine is well-established as a local anesthetic.
Reviewed by
SaathiMed Expert Panel | Oct 22, 2026
🩺
Medically Fact-Checked & Clinically Verified by SaathiMed Clinical Review Board
Clinical Reference Standards: CDSCO (Central Drugs Standard Control Organisation), Indian Pharmacopoeia (IP) & WHO | Last Updated: September 2026

When to Call Your Doctor IMMEDIATELY

  • Severe allergic reaction: swelling of face, lips, throat, or difficulty breathing.
  • Severe skin reaction: blistering, peeling, or widespread rash.
  • Signs of gastrointestinal bleeding: black stool, vomiting blood, or severe abdominal pain.
  • Decreased urine output or swelling in legs, which may indicate kidney problems.
  • Bluish discoloration of lips, nails, or skin, which may indicate methemoglobinemia.
  • Chest pain, shortness of breath, or irregular heartbeat.

If experiencing severe symptoms, call emergency services immediately.

What is benzonac gel used for?

This medicine is a topical gel containing diclofenac (3% w/w) and benzocaine (20% w/w). It is used to relieve pain and inflammation in conditions like osteoarthritis, muscle strains, and sprains. Apply a thin layer to the affected area 3-4 times daily, or as directed by your doctor.

  • Generic Name: Diclofenac (3% w/w) + Benzocaine (20% w/w)
  • Manufacturer: Stedman Pharmaceuticals Pvt Ltd
  • Form: Allopathy
  • Pregnancy Category: Consult doctor
  • Prescription Required: Yes

🇮🇳 benzonac gel के बारे में (Hindi Summary)

उपयोग: यह दवा एक टॉपिकल जेल है जिसमें डाइक्लोफेनाक (3% w/w) और बेंज़ोकेन (20% w/w) होते हैं। इसका उपयोग ऑस्टियोआर्थराइटिस, मांसपेशियों में खिंचाव, मोच और अन्य स्थानीय दर्द और सूजन से राहत पाने के लिए किया जाता है। यह जेल प्रभावित क्षेत्र पर लगाने से दर्द और सूजन को कम करती है।

साइड इफेक्ट्स: इस दवा के सामान्य दुष्प्रभावों में त्वचा पर लालिमा, खुजली, जलन या दाने शामिल हैं। ये आमतौर पर हल्के और अस्थायी होते हैं। दुर्लभ मामलों में गंभीर एलर्जी प्रतिक्रिया हो सकती है, जैसे चेहरे, होंठ या गले में सूजन, या सांस लेने में कठिनाई। यदि आपको कोई गंभीर दुष्प्रभाव महसूस हो, तो तुरंत डॉक्टर से संपर्क करें।

सुरक्षा सलाह: इस दवा का उपयोग करने से पहले अपने डॉक्टर को अपनी एलर्जी, दवाओं और स्वास्थ्य स्थितियों के बारे में बताएं। इसे टूटी हुई त्वचा, आंखों, म्यूकस झिल्ली या खुले घावों पर न लगाएं। उपयोग के बाद हाथ धोएं। इस जेल को 7 दिनों से अधिक समय तक बिना डॉक्टर की सलाह के न लगाएं। बच्चों की पहुंच से दूर रखें।

💡 Did You Know? India is the largest provider of generic medicines globally, supplying over 50% of global vaccine demand.

💊 benzonac gel Uses & Benefits

[{"condition":"Osteoarthritis","description":"Relieves pain and improves joint mobility in knee, hip, and hand osteoarthritis.","evidence":"Well-established"},{"condition":"Rheumatoid arthritis","description":"Provides symptomatic relief of pain and inflammation in affected joints.","evidence":"Well-established"},{"condition":"Muscle strains and sprains","description":"Reduces pain and swelling associated with soft tissue injuries.","evidence":"Well-established"},{"condition":"Localized musculoskeletal pain","description":"Effective for conditions such as tendinitis, bursitis, and low back pain.","evidence":"Well-established"}]

Off-label uses: [{"condition":"Neuropathic pain","description":"Sometimes used off-label for localized neuropathic pain, but evidence is limited.","evidence":"Limited"},{"condition":"Postherpetic neuralgia","description":"May provide temporary relief, but not routinely recommended.","evidence":"Limited"}]

Primary treatment for: Osteoarthritis

Also treats: Rheumatoid arthritis, Muscle strains, Sprains, Tendinitis, Bursitis

📋 Drug Information

Generic Name(s)Diclofenac (3% w/w) + Benzocaine (20% w/w)
Brand Namebenzonac gel
ManufacturerStedman Pharmaceuticals Pvt Ltd
Packaging / FormVaries by brand (Allopathy)
Therapeutic ClassSTOMATOLOGICALS
Action Class
Route of AdministrationTopical
StorageStore at room temperature (15-30°C). Protect from direct sunlight and moisture. Keep the tube tightly closed when not in use.
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
Apply this medicine only to intact skin and avoid broken or irritated areas.
2
Wash your hands thoroughly after applying the gel to prevent accidental contact with eyes or mouth.
3
Do not use a heating pad or wrap the treated area tightly after application.
4
If you experience skin irritation, stop using the gel and consult your doctor.
5
Use the gel consistently for the best results, but do not exceed 7 days without medical advice.
6
Inform your doctor if you are taking oral NSAIDs or blood thinners, as interactions may occur.

🔍 Is This Medicine Right for Your Symptom?

Educational reference. Always consult a doctor for diagnosis.

✅
Chronic joint pain
This medicine is commonly prescribed for this.
Likely Use
✅
Muscle strain
This medicine can help relieve pain and inflammation.
Likely Use
❌
Fever
This medicine is not a primary fever reducer.
Not Primary
❌
Headache
This medicine is not intended for headaches.
Not Primary

🔬 How This Medicine Works (Pharmacology)

Pharmacokinetics

AbsorptionDiclofenac is absorbed percutaneously through the skin. The extent of absorption depends on the surface area, duration of application, and skin condition. Systemic absorption is typically low, around 6% of the applied dose, but can increase with prolonged use or application to large areas. Benzocaine is also absorbed through the skin and mucous membranes, but systemic absorption is minimal when used topically.
DistributionAfter absorption, diclofenac is highly bound to plasma proteins and distributes into synovial fluid and inflamed tissues. Benzocaine is distributed locally and may enter the systemic circulation in small amounts, where it is rapidly metabolized.
Protein BindingDiclofenac is approximately 99% bound to plasma proteins, primarily albumin. Benzocaine is also bound to plasma proteins, but the exact percentage is not well established.
MetabolismDiclofenac is metabolized in the liver by cytochrome P450 enzymes, primarily CYP2C9, to several metabolites. Benzocaine is metabolized in the liver and plasma by esterases to para-aminobenzoic acid and ethanol.
Half-LifeThe elimination half-life of diclofenac from the systemic circulation is approximately 1-2 hours. The half-life of benzocaine is approximately 1-2 hours. However, the local effects may last longer due to tissue binding.
ExcretionDiclofenac metabolites are excreted primarily in the urine (about 65%) and bile/feces (about 35%). Benzocaine metabolites are excreted in the urine.
BioavailabilityThe systemic bioavailability of diclofenac from topical gel is approximately 6% relative to oral dosing. The bioavailability of benzocaine from topical application is not well established but is considered low.
Onset of ActionThe numbing effect of benzocaine typically begins within 1-2 minutes of application. The anti-inflammatory effect of diclofenac may take several hours to become noticeable, with maximum benefit after several days of regular use.
Peak Plasma TimePeak plasma concentrations of diclofenac after topical application are typically reached within 1-2 hours. For benzocaine, peak plasma levels are reached within 30-60 minutes.
Duration of ActionThe local anesthetic effect of benzocaine lasts for approximately 30-60 minutes. The anti-inflammatory and analgesic effects of diclofenac can last for several hours, requiring application 3-4 times daily.

How It Works

This medicine combines the anti-inflammatory action of diclofenac with the local anesthetic effect of benzocaine. Diclofenac works by inhibiting the cyclooxygenase enzymes, which are responsible for the production of prostaglandins, substances that mediate pain and inflammation. Benzocaine works by blocking sodium channels in nerve cell membranes, preventing the generation and conduction of nerve impulses, thereby producing a numbing effect. When applied topically, both ingredients penetrate the skin and act locally in the underlying tissues to reduce pain and inflammation.

Mechanism Steps

1
Diclofenac inhibits cyclooxygenase enzymes: Diclofenac binds to and inhibits the cyclooxygenase-1 and cyclooxygenase-2 enzymes, preventing the conversion of arachidonic acid to prostaglandins.
2
Reduction of prostaglandin synthesis: Decreased prostaglandin levels lead to reduced inflammation, swelling, and pain sensitization at the site of application.
3
Benzocaine blocks sodium channels: Benzocaine reversibly binds to voltage-gated sodium channels on nerve cell membranes, blocking the influx of sodium ions and preventing nerve impulse generation.
4
Local anesthesia: The blockade of nerve impulses results in a temporary loss of sensation in the area where the gel is applied, providing rapid pain relief.

💡 How to Take benzonac gel

Strength: Gel containing diclofenac 3% w/w and benzocaine 20% w/w.

1Wash your hands before and after applying the gel, unless your hands are the treated area.
2Clean and dry the affected area.
3Apply a thin layer of the gel to the affected area.
4Gently rub the gel into the skin until it is absorbed.
5Do not cover the area with a bandage or dressing unless instructed by your doctor.
6Avoid touching the treated area immediately after application.

Dosage Information

Adult DosageApply a thin layer of this medicine to the affected area 3 to 4 times daily, or as directed by your doctor. The dose and frequency may vary depending on the condition being treated and your response to therapy. Do not exceed the recommended dose. 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 be more sensitive to the effects of this medicine. Use with caution and follow your doctor's instructions. Dose must be individualized by a qualified clinician based on indication, age, weight, renal and hepatic function.
Renal ImpairmentNo specific dose adjustment is established for topical use. However, patients with severe kidney disease should use with caution and consult a doctor.
Hepatic ImpairmentNo specific dose adjustment is established for topical use. However, patients with severe liver disease should use with caution and consult a doctor.
Maximum Daily DoseThe maximum daily dose for topical application is not established. Do not exceed the recommended frequency of 3 to 4 applications per day.

Dosage Timeline

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

⏰ What to Do If You Miss a Dose

📌 Less than half the dosing interval has passed
→ Apply the missed dose as soon as you remember.
💡 Continue with the regular schedule.
📌 More than half the dosing interval has passed
→ Skip the missed dose.
💡 Do not apply a double dose to catch up.

⚠️ Side Effects of benzonac gel

✅ Common Side Effects

Application site redness (Common (5-10%))
Usually resolves on its own. If persistent or worsening, consult a doctor.
Application site itching (Common (5-10%))
Avoid scratching. Discontinue if severe.
Application site burning or stinging (Common (5-10%))
Usually temporary. If severe, wash the area and consult a doctor.
Rash (Uncommon (1-5%))
Stop using the gel and consult a doctor if rash persists.

🚨 Serious Side Effects

Severe allergic reaction (anaphylaxis) (Rare (<0.1%))
Seek immediate medical attention if you experience swelling of the face, lips, throat, or difficulty breathing.
Severe skin reactions (e.g., blistering, peeling) (Rare (<0.1%))
Stop using the gel and seek immediate medical attention.
Gastrointestinal bleeding (Rare (<0.1%))
Seek immediate medical attention if you notice black stool, vomiting blood, or severe abdominal pain.
Kidney problems (Rare (<0.1%))
Consult a doctor if you experience decreased urine output or swelling.

⚠️ Rare Side Effects

Methemoglobinemia
Seek immediate medical attention if you experience bluish discoloration of lips, nails, or skin, shortness of breath, or confusion.
Photosensitivity reaction
Avoid sun exposure. Consult a doctor if reaction occurs.

Consult your doctor if you experience any unusual symptoms.

🔬 Drug Interactions

Drug Severity Effect
Warfarin Major
Oral NSAIDs Major
Methotrexate Major
ACE inhibitors Moderate
Diuretics Moderate
Corticosteroids Moderate
Aspirin Minor
Lithium Minor

🚨 Major Interactions

  • Oral NSAIDs (e.g., ibuprofen, naproxen)
  • Anticoagulants (e.g., warfarin)
  • Methotrexate

⚡ Moderate Interactions

  • Antihypertensives (e.g., ACE inhibitors, diuretics)
  • Corticosteroids
  • Other topical products containing NSAIDs or anesthetics

🍷 Alcohol Interaction

No specific interaction between this topical gel and alcohol is established. However, alcohol may increase the risk of gastrointestinal bleeding when NSAIDs are used systemically. Since systemic absorption from this gel is low, the risk is minimal, but caution is advised if you consume alcohol regularly.

🔎 Check Your Other Medicines

Educational tool. Always confirm with your doctor or pharmacist.

🛡️ Safety & Warnings

🚫 Contraindications

["Known allergy to diclofenac, benzocaine, or any component of the gel.","History of asthma, urticaria, or allergic-type reactions after taking aspirin or other NSAIDs.","Application to broken, infected, or inflamed skin.","Use in children under 14 years of age without medical advice.","Third trimester of pregnancy."]

⚠️ Warnings & Precautions

["For external use only. Do not ingest.","Avoid contact with eyes, mucous membranes, and open wounds.","Do not apply to large areas of skin or use for prolonged periods without medical advice.","Do not use with occlusive dressings unless directed by a doctor.","Avoid exposure of treated area to sunlight or sunlamps.","Wash hands after application unless hands are being treated.","Consult a doctor if symptoms persist or worsen after 7 days of use.","Keep out of reach of children."]

🤱 Lactation Safety

It is not known whether diclofenac or benzocaine pass into breast milk in significant amounts after topical application. Consult a doctor before using this medicine while breastfeeding. Avoid applying to the breast area.

💊 Overdose Management

Overdose from topical application is unlikely due to low systemic absorption. If accidental ingestion occurs, seek immediate medical attention. Symptoms of overdose may include nausea, vomiting, stomach pain, and dizziness. Treatment is symptomatic and supportive.

⏰ Missed Dose

If you miss a dose, apply it as soon as you remember. If it is almost time for your next dose, skip the missed dose and continue with your regular schedule. Do not apply a double dose to make up for a missed one.

Additional Safety Advice

General Safety

Before using this medicine, inform your doctor if you are allergic to diclofenac, benzocaine, aspirin, or other NSAIDs, or if you have a history of asthma, stomach ulcers, kidney or liver disease, or heart problems. Do not apply this gel to broken, irritated, or infected skin, and avoid contact with eyes, mucous membranes, or open wounds. Wash your hands thoroughly after applying the gel, unless your hands are the treated area. Do not cover the treated area with airtight dressings unless instructed by your doctor. Avoid exposure of the treated area to sunlight or sunlamps, as this may increase the risk of skin reactions. If you are pregnant or breastfeeding, consult your doctor before using this medicine. Do not use this gel for more than 7 days without medical advice. Keep out of reach of children.

👴 Special Considerations for Elderly

💡 For Patients Above 65

Elderly patients may be more susceptible to the side effects of NSAIDs, including kidney and gastrointestinal issues. Use this medicine with caution and under medical supervision. Monitor for any signs of skin irritation or systemic effects.

🤰 Pregnancy Planning (TTC)

If you are planning to become pregnant, consult your doctor before using this medicine. NSAIDs may affect ovulation and are generally avoided during pregnancy, especially in the third trimester.

🏥 Post-Surgery Considerations

Consult your doctor before using this medicine after surgery. It may be used for post-operative pain if recommended, but avoid applying it to surgical wounds or broken skin.

🦷 Dental Procedures

This medicine is not intended for dental pain. Consult your dentist for appropriate pain relief after dental procedures.

💚 Lifestyle Tips for Better Results

🏃
Maintain a healthy weight to reduce joint stress.
🥗
Regular low-impact exercise like swimming or cycling.
😴
Practice good posture to prevent muscle strain.
💧
Include anti-inflammatory foods in your diet, such as fruits and vegetables.
🧘
Get adequate sleep to promote healing.
🌞
Avoid smoking, as it can impair circulation and healing.

🏋️ Exercise Considerations

While using this medicine, you can continue with your regular exercise routine, but avoid strenuous activities that may worsen your condition. Listen to your body and rest if you experience increased pain. Consult your doctor before starting any new exercise program.

🥗 Diet Recommendations

Include omega-3 rich foods like fish and flaxseeds.
Reduce processed food intake.
Stay well hydrated.
Consume plenty of fruits and vegetables.
Limit alcohol and caffeine.

💼 Impact on Daily Work & Life

This medicine is applied topically and is unlikely to affect your ability to drive or operate machinery. However, if you experience dizziness or drowsiness, avoid these activities until you know how the medicine affects you. You can continue your daily activities as tolerated.

🛑 When to Stop This Medicine

Stop using this medicine and consult your doctor if your symptoms do not improve after 7 days, if they worsen, or if you experience any severe side effects. Do not stop prescribed treatment without consulting your doctor.

📅 Long-Term Use Effects

Long-term use of this medicine may increase the risk of skin reactions and, rarely, systemic effects such as kidney or gastrointestinal problems. It is recommended to use it for the shortest duration necessary and under medical supervision. Regular monitoring may be required if used for extended periods.

🌿 Non-Medicine Approaches

These can complement medicine but do not replace prescribed treatment.

Physical therapy

Can complement medicine for chronic pain and improve mobility.

Evidence: Well-established
Hot/cold therapy

Applying heat or cold packs can help reduce pain and inflammation.

Evidence: Well-established
Acupuncture

May provide pain relief for some individuals.

Evidence: Moderate

💉 Vaccination Considerations

💉 If You're Getting Vaccinated

There are no known interactions between this medicine and vaccines. You can receive vaccinations while using this gel.

📦 Storage Guide

✅ DO

Store at room temperature (15-30°C)

❌ DON'T

Do not refrigerate unless specified

✅ DO

Keep in original container

❌ DON'T

Do not transfer to unmarked containers

✅ DO

Keep away from direct sunlight

❌ DON'T

Do not store in bathroom cabinet

✈️ Traveling with This Medicine

When traveling with this medicine, keep it in its original packaging with the prescription label. Carry a copy of your prescription in case of customs checks. Store it at room temperature and protect it from extreme heat or cold. If you are flying, pack it in your carry-on luggage if you need it during the flight. There are no specific time zone adjustments needed for topical application, but maintain your regular schedule as much as possible.

💰 Cost Analysis & Savings

👥 Real Patient Stories

Educational, anonymized scenarios. Individual results may vary.

👤 A 55-year-old woman with knee osteoarthritis
She was prescribed this medicine for her knee pain. She applied it three times a day and noticed significant relief within a week. She also started physiotherapy, which improved her mobility. She experienced mild redness at the application site initially, which resolved with continued use.
💡 Lesson: Consistent use and combining with physiotherapy can enhance outcomes. Mild skin reactions are common and often temporary.
👤 A 40-year-old man with a sports injury
He sprained his ankle during a football game. His doctor recommended this medicine for pain and swelling. He applied it four times daily and kept his ankle elevated. The pain and swelling reduced considerably over three days. He was advised not to use it for more than a week.
💡 Lesson: This medicine provides effective short-term relief for acute injuries. Adhering to the recommended duration is important.

💬 Questions Patients Often Ask

Q: How long does it take to work?

A: The numbing effect of benzocaine starts within 1-2 minutes, while the anti-inflammatory effect of diclofenac may take several hours to become noticeable. Maximum benefit is usually seen after several days of regular use.

Q: Can I use this gel on my face?

A: No, this gel should not be applied to the face or mucous membranes. It is intended for use on the body and limbs.

Q: Is it safe to use during pregnancy?

A: Consult your doctor before using this medicine during pregnancy. It is not recommended during the third trimester.

Q: What should I do if I get a rash?

A: Stop using the gel and consult your doctor. A rash may indicate an allergic reaction.

🤔 Common Patient Concerns

💭 These are the concerns patients most commonly raise

  • Can I take this medicine long-term?
  • Will it affect my kidney function?
  • Can I drive after taking this medicine?
  • Does it interact with my blood pressure medicine?
  • What if I miss a dose?
  • Can I drink alcohol while taking this?

🛑 Myths vs. Facts

  • Myth: This gel can be used on any type of pain.
    Fact: This medicine is intended for localized musculoskeletal pain and inflammation. It is not effective for all types of pain, such as headaches or nerve pain.
  • Myth: More gel means faster relief.
    Fact: Applying more than the recommended amount does not provide faster relief and may increase the risk of side effects.
  • Myth: This medicine is completely safe because it is topical.
    Fact: While topical use has fewer systemic side effects, it can still cause skin reactions and, rarely, systemic effects if used excessively or on large areas.

🔄 Alternative Options

Generic Alternatives

  • Diclofenac 3% w/w + Benzocaine 20% w/w gel

Brand Alternatives

  • Benzonac gel

📊 Comparison with Similar Medicines

[{"medicine":"This medicine","active_ingredients":"Diclofenac 3% + Benzocaine 20%","route":"Topical","primary_use":"Pain and inflammation"},{"medicine":"Diclofenac 1% gel","active_ingredients":"Diclofenac 1%","route":"Topical","primary_use":"Pain and inflammation"},{"medicine":"Lidocaine 5% patch","active_ingredients":"Lidocaine 5%","route":"Topical","primary_use":"Localized pain"}]

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