benoquin ointment - Monobenzone (20% w/w) medicine

Benoquin Ointment: Comprehensive Guide to Uses, Side Effects, and Safety

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🏭 Mac Laboratories Ltd 📦 Varies by brand 💊 Allopathy 📅 Updated: Sep 23, 2026
🤰 Pregnancy Category Not established from the available information. This medicine should be avoided during pregnancy unless specifically prescribed by a doctor after weighing the risks and benefits. 📋 Prescription Required 💊 Generic Available
Medically Reviewed
12 min read
Evidence: Moderate for vitiligo; limited for other uses.
Reviewed by
SaathiMed Expert Panel | Sep 23, 2026

When to Call Your Doctor IMMEDIATELY

  • Severe burning, blistering, or peeling of the skin.
  • Signs of a severe allergic reaction such as swelling of the face, lips, or throat.
  • Development of bluish-black discoloration of the skin (ochronosis).
  • Depigmentation of skin areas not treated with the medicine.
  • Eye irritation or vision changes after accidental contact.
  • Signs of infection at the application site (increased redness, warmth, pus).

If experiencing severe symptoms, call emergency services immediately.

What is benoquin ointment used for?

This medicine is a topical ointment containing monobenzone 20% w/w, used to permanently depigment normal skin in conditions like vitiligo. It works by destroying melanocytes and should only be used under dermatological supervision.

  • Generic Name: Monobenzone (20% w/w)
  • Manufacturer: Mac Laboratories Ltd
  • Form: Allopathy
  • Pregnancy Category: Consult doctor
  • Prescription Required: Yes

🇮🇳 benoquin ointment के बारे में (Hindi Summary)

उपयोग: यह दवा मोनोबेन्ज़ोन 20% w/w युक्त एक टॉपिकल ऑइंटमेंट है, जिसका उपयोग विटिलिगो (सफेद दाग) के इलाज में किया जाता है। यह त्वचा की मेलेनोसाइट कोशिकाओं को नष्ट करके स्थायी रूप से रंग हल्का करती है। इसका उपयोग केवल त्वचा रोग विशेषज्ञ की देखरेख में ही करना चाहिए। यह दवा चेहरे पर नहीं लगानी चाहिए और न ही बच्चों में बिना विशेषज्ञ सलाह के उपयोग करनी चाहिए। गर्भवती और स्तनपान कराने वाली महिलाओं को इसका उपयोग नहीं करना चाहिए। इसका असर तुरंत नहीं होता, इसमें कई सप्ताह से महीने लग सकते हैं।

साइड इफेक्ट्स: इस दवा के सामान्य दुष्प्रभावों में लगाने की जगह पर हल्की जलन, खुजली, लालिमा और सूखापन शामिल हैं। कुछ लोगों को धूप के प्रति संवेदनशीलता बढ़ सकती है। गंभीर दुष्प्रभाव दुर्लभ हैं, लेकिन इनमें त्वचा पर छाले, गंभीर एलर्जी, और ओक्रोनोसिस (त्वचा का नीला-काला होना) शामिल हो सकते हैं। अगर आपको कोई भी असामान्य लक्षण दिखे, तो तुरंत डॉक्टर से संपर्क करें।

सुरक्षा सलाह: इस दवा को केवल त्वचा पर ही लगाएं, जैसा डॉक्टर ने बताया हो। आंखों, मुंह और नाक के संपर्क से बचें। टूटी या घायल त्वचा पर न लगाएं। धूप से बचाव के लिए सनस्क्रीन और सुरक्षात्मक कपड़े पहनें। चेहरे पर बिना डॉक्टर की सलाह के न लगाएं। गर्भावस्था या स्तनपान के दौरान डॉक्टर से सलाह लें। बच्चों की पहुंच से दूर रखें। दवा को कमरे के तापमान पर सूखी जगह पर रखें।

💡 Did You Know? Over 80% of the antiretroviral drugs used globally to combat AIDS are supplied by Indian pharmaceutical companies.

💊 benoquin ointment Uses & Benefits

[{"condition":"Vitiligo","description":"This medicine is used to depigment normal skin surrounding vitiligo patches to achieve uniform skin tone in extensive cases.","evidence":"Well-established"},{"condition":"Hyperpigmentation disorders","description":"It may be used for certain severe hyperpigmentation conditions that have not responded to other treatments.","evidence":"Limited"}]

Off-label uses: [{"condition":"Melasma","description":"Rarely used off-label for melasma, but its permanent depigmenting effect makes it unsuitable for most cases.","evidence":"Limited"}]

Primary treatment for: Vitiligo

Also treats: Hyperpigmentation disorders

📋 Drug Information

Generic Name(s)Monobenzone (20% w/w)
Brand Namebenoquin ointment
ManufacturerMac Laboratories Ltd
Packaging / FormVaries by brand (Allopathy)
Therapeutic ClassDERMA
Action ClassAnti Pigmentation & Skin lightening agent
Route of AdministrationTopical
StorageStore at room temperature (15-30°C) in a dry place, away from direct sunlight and moisture. Keep the tube tightly closed when not in use.
Shelf Life24 months from the date of manufacture, or as indicated on the packaging.
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 the areas of normal skin as directed by your dermatologist.
2
Use a sunscreen with high SPF on treated areas to prevent sunburn and uneven pigmentation.
3
Do not use this medicine on the face, genitals, or skin folds unless specifically instructed.
4
Keep a record of your application schedule and follow up regularly with your doctor.
5
Stop using this medicine and inform your doctor if you notice severe irritation or blistering.
6
Avoid using other skin-lightening products concurrently without medical advice.
7
Be patient; the depigmenting effect takes several weeks to months to become visible.

🔍 Is This Medicine Right for Your Symptom?

Educational reference. Always consult a doctor for diagnosis.

White patches on skin (vitiligo)
This medicine is used to depigment normal skin to blend with vitiligo patches.
Likely Use
Hyperpigmentation
This medicine is not typically used for hyperpigmentation; it is used for depigmentation.
Not Primary

🔬 How This Medicine Works (Pharmacology)

Pharmacokinetics

AbsorptionNot established from the available information.
DistributionNot established from the available information.
Protein BindingNot established from the available information.
MetabolismNot established from the available information.
Half-LifeNot established from the available information.
ExcretionNot established from the available information.
BioavailabilityNot established from the available information.
Onset of ActionThe depigmenting effect of this medicine is not immediate. It typically takes several weeks to months of regular application before noticeable lightening occurs.
Peak Plasma TimeNot established from the available information.
Duration of ActionThe depigmentation caused by this medicine is permanent and irreversible.

How It Works

This medicine works by selectively destroying melanocytes, the cells responsible for producing melanin in the skin. Monobenzone is a derivative of hydroquinone and is thought to act as a competitive inhibitor of tyrosinase, an enzyme essential for melanin synthesis. This inhibition leads to the production of toxic intermediates that damage and eventually destroy melanocytes. The effect is irreversible, resulting in permanent depigmentation of the treated skin. The exact mechanism is not fully understood, but it involves both direct toxicity to melanocytes and an immune-mediated response. Because the destruction is permanent, this medicine is used cautiously and only for specific indications.

Mechanism Steps

1
Application and absorption: This medicine is applied topically and penetrates the skin to reach the melanocytes in the basal layer of the epidermis.
2
Inhibition of tyrosinase: Monobenzone inhibits the enzyme tyrosinase, which is crucial for the conversion of tyrosine to melanin.
3
Formation of toxic intermediates: The inhibition leads to the accumulation of toxic byproducts that damage melanocytes.
4
Destruction of melanocytes: The toxic intermediates cause irreversible damage and death of melanocytes, leading to permanent depigmentation.
5
Immune-mediated response: There is evidence that an immune response may also contribute to the destruction of melanocytes.

💡 How to Take benoquin ointment

Strength: Ointment containing monobenzone 20% w/w.

1Wash and dry the affected area thoroughly.
2Apply a thin layer of the ointment to the affected area using a clean finger or applicator.
3Gently rub it into the skin until it is absorbed.
4Wash your hands immediately after application, unless your hands are the treated area.
5Avoid covering the treated area with tight bandages or dressings unless instructed.
6Do not apply to broken or irritated skin.
7Use sunscreen on treated areas when exposed to sunlight.

Dosage Information

Adult DosageThis medicine is for topical use only. Apply a thin layer to the affected areas of normal skin as directed by your doctor, usually once or twice daily. The exact frequency and duration of treatment depend on the condition being treated and your response to therapy. Dose must be individualized by a qualified clinician based on indication, age, weight, renal and hepatic function. Do not apply to the face or other sensitive areas unless specifically instructed. Wash hands thoroughly after application. Avoid excessive use.
Pediatric DosagePediatric dosing is not established from available information. Consult a pediatrician.
Elderly DosageNo specific dosage adjustments are established for elderly patients. However, elderly individuals may be more susceptible to skin irritation and should use this medicine with caution under medical supervision.
Renal ImpairmentNo dosage adjustments are established for patients with renal impairment. Since systemic absorption is limited, adjustment is unlikely to be necessary. Consult your doctor.
Hepatic ImpairmentNo dosage adjustments are established for patients with hepatic impairment. Since systemic absorption is limited, adjustment is unlikely to be necessary. Consult your doctor.
Maximum Daily DoseThe maximum daily dose is not established. Use only as prescribed by your doctor. Do not exceed the recommended application frequency.

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 double dose to catch up.

⚠️ Side Effects of benoquin ointment

✅ Common Side Effects

Mild burning or stinging (Common (5-10%))
This usually resolves on its own. If it persists or worsens, consult your doctor.
Redness (Common (5-10%))
Apply a cool compress and avoid other irritants. Consult your doctor if redness is severe.
Itching (Common (5-10%))
Avoid scratching. Consult your doctor if itching is bothersome.
Dryness (Common (5-10%))
Use a gentle moisturizer. Consult your doctor if dryness persists.

🚨 Serious Side Effects

Severe skin irritation or blistering (Rare (<0.1%))
Stop using this medicine and seek immediate medical attention.
Allergic contact dermatitis (Rare (<0.1%))
Discontinue use and consult a doctor for appropriate treatment.
Ochronosis (bluish-black discoloration) (Rare (<0.1%))
Report to your doctor immediately; this may require stopping the medicine.
Depigmentation of distant skin areas (Rare (<0.1%))
Consult your doctor; this effect may be permanent.

⚠️ Rare Side Effects

Depigmentation of the eyes
Seek immediate ophthalmological evaluation.

Consult your doctor if you experience any unusual symptoms.

🛡️ Safety & Warnings

🚫 Contraindications

["Known hypersensitivity or allergy to monobenzone or any ingredient in the formulation.","Use on the face, unless specifically directed by a dermatologist.","Use in children, unless prescribed by a specialist.","Pregnancy and breastfeeding, unless the potential benefit justifies the risk.","Application to broken or inflamed skin.","Use in individuals with a history of ochronosis."]

⚠️ Warnings & Precautions

["For external use only. Do not ingest.","Avoid contact with eyes, lips, and mucous membranes.","This medicine can cause permanent depigmentation; use only as directed.","Protect treated areas from sunlight with sunscreen and protective clothing.","Do not use on large areas of the body without medical supervision.","Keep out of reach of children.","Do not use if the tube is damaged or the expiry date has passed.","Inform your doctor if you experience any unusual skin reactions."]

🤱 Lactation Safety

It is not known whether this medicine passes into breast milk. Because of the potential for serious adverse effects in a nursing infant, this medicine should be used with caution in breastfeeding women. Consult your doctor before using this medicine while breastfeeding. Avoid applying to the breast area to prevent infant exposure.

💊 Overdose Management

Overdose with this medicine is unlikely due to its topical route. If accidental ingestion occurs, seek immediate medical attention. If excessive application causes severe skin irritation, wash the area thoroughly with water and consult a doctor. There is no specific antidote; treatment is symptomatic and supportive.

⏰ Missed Dose

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

Additional Safety Advice

General Safety

This medicine should only be applied to the skin as directed by your doctor. Wash your hands thoroughly before and after applying the ointment. Avoid contact with the eyes, mouth, nose, and other mucous membranes. If accidental contact occurs, rinse thoroughly with water. Do not apply this medicine to broken or irritated skin. Protect treated areas from sunlight by wearing protective clothing and using a broad-spectrum sunscreen, as this medicine can increase sun sensitivity. Do not use this medicine on the face unless specifically instructed by your doctor. Avoid using other skin products on the treated area without consulting your doctor. Inform your doctor if you are pregnant, planning to become pregnant, or breastfeeding. Keep this medicine out of reach of children. Do not share this medicine with others, even if they have similar symptoms. Store this medicine at room temperature, away from direct sunlight and moisture. Do not use this medicine after the expiry date. If you miss a dose, apply it as soon as you remember, but if it is almost time for the next dose, skip the missed dose and continue with your regular schedule. Do not apply extra medicine to make up for a missed dose. Regular follow-up with your doctor is important to monitor the effects and adjust treatment as needed.

👴 Special Considerations for Elderly

💡 For Patients Above 65

Elderly patients may be more prone to skin irritation and should use this medicine with caution. Regular skin examinations are recommended to monitor for adverse effects.

🤰 Pregnancy Planning (TTC)

This medicine should be avoided during pregnancy and while planning pregnancy. If you are planning to become pregnant, consult your doctor to discuss alternative treatments. The safety of this medicine in pregnancy has not been established.

🏥 Post-Surgery Considerations

If you are undergoing surgery, inform your surgeon about this medicine. It may need to be stopped temporarily if there is a risk of interfering with wound healing or if the surgical area is near treated skin.

🦷 Dental Procedures

No specific precautions are required for dental procedures. However, inform your dentist about all medicines you are taking.

💚 Lifestyle Tips for Better Results

🏃
Protect your skin from the sun with clothing and sunscreen.
🥗
Avoid using harsh soaps or scrubs on treated areas.
😴
Maintain a healthy diet rich in antioxidants to support skin health.
💧
Stay hydrated to keep your skin moisturized.
🧘
Avoid smoking and excessive alcohol consumption as they can affect skin health.
🌞
Manage stress through relaxation techniques as stress can worsen skin conditions.

🏋️ Exercise Considerations

No specific exercise restrictions are associated with this medicine. However, avoid activities that cause excessive sweating or friction on treated areas, as this may increase irritation. If you experience skin irritation, consult your doctor before resuming strenuous exercise.

🥗 Diet Recommendations

Include foods rich in vitamin C and E to support skin health.
Eat a balanced diet with plenty of fruits and vegetables.
Stay well hydrated by drinking adequate water.
Limit intake of processed foods and sugary drinks.

💼 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 skin irritation or allergic reactions, you may need to take a break from work to recover. It is important to follow your doctor's advice and report any side effects that interfere with your daily activities.

🛑 When to Stop This Medicine

Do not stop using this medicine without consulting your doctor. If you experience severe side effects or if the treatment is not working as expected, your doctor may advise you to stop. Abrupt discontinuation may not cause withdrawal, but the depigmenting effect is permanent, so stopping will not reverse any changes already achieved.

📅 Long-Term Use Effects

Long-term use of this medicine leads to permanent depigmentation of the treated areas. This is often the desired effect for vitiligo, but it can be distressing if it occurs in unwanted areas. Regular monitoring by a dermatologist is important to assess the extent of depigmentation and manage any adverse effects. There is a risk of ochronosis with prolonged use, which requires medical attention.

🌿 Non-Medicine Approaches

These can complement medicine but do not replace prescribed treatment.

Phototherapy

Narrowband UVB or PUVA therapy can be used to repigment vitiligo patches.

Evidence: Well-established
Topical corticosteroids

Can help repigment small areas of vitiligo.

Evidence: Well-established
Surgical options

Skin grafting or melanocyte transplantation for stable vitiligo.

Evidence: Moderate

💉 Vaccination Considerations

💉 If You're Getting Vaccinated

No known interactions between this medicine and vaccines. However, consult your doctor before receiving any vaccine while on this medicine.

📦 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, carry it in its original packaging along with a copy of your prescription. Store it in your carry-on luggage to avoid extreme temperatures in checked baggage. Keep it away from direct sunlight and moisture. If you are traveling across time zones, continue with your regular application schedule as prescribed. Check the customs regulations of your destination regarding prescription medicines. Carry enough supply for your entire trip.

💰 Cost Analysis & Savings

👥 Real Patient Stories

Educational, anonymized scenarios. Individual results may vary.

👤 A 35-year-old woman with extensive vitiligo on her arms and legs.
She was prescribed this medicine to depigment the remaining normal skin to achieve a uniform tone. After 3 months of regular application, she noticed significant lightening of the treated areas. She experienced mild itching initially, which subsided with continued use. She emphasized the importance of sun protection and regular follow-up.
💡 Lesson: Consistent application and sun protection are key to achieving desired results with this medicine.
👤 A 50-year-old man with vitiligo on his hands.
He started using this medicine on the normal skin of his hands. After 6 weeks, he developed redness and blistering, which he reported to his doctor. The doctor advised him to stop the medicine temporarily and apply a soothing cream. The reaction resolved, and he was able to restart at a lower frequency.
💡 Lesson: Adverse reactions should be reported promptly; temporary discontinuation and dose adjustment can help manage side effects.

💬 Questions Patients Often Ask

Q: How long does it take to work?

A: It may take several weeks to months of regular application before you notice any depigmentation. The effect is gradual and permanent.

Q: Can I use this medicine on my face?

A: No, unless specifically instructed by your dermatologist. It is generally not recommended for the face due to the risk of permanent depigmentation in sensitive areas.

Q: What should I do if I get severe irritation?

A: Stop using the medicine and consult your doctor immediately. They may advise temporary discontinuation or alternative treatment.

🤔 Common Patient Concerns

💭 These are the concerns patients most commonly raise

  • Can I use this medicine on my face?
  • How long will it take to see results?
  • Is the depigmentation permanent?
  • What should I do if I miss a dose?
  • Can I use other skin creams while on this medicine?
  • Is it safe to use during pregnancy?

🔄 Substitutes for benoquin ointment

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 used as a skin lightener for cosmetic purposes.
    Fact: This medicine is a potent depigmenting agent with permanent effects and should only be used for specific medical conditions under dermatological supervision.
  • Myth: This medicine works immediately.
    Fact: The depigmenting effect takes several weeks to months to become noticeable.
  • Myth: This medicine is safe for everyone.
    Fact: It is contraindicated in pregnancy, breastfeeding, and in children without specialist guidance, and should not be used on the face.

📊 Comparison with Similar Medicines

[{"medicine":"Monobenzone","class":"Depigmenting agent","reversibility":"Irreversible","primary_use":"Vitiligo"},{"medicine":"Hydroquinone","class":"Depigmenting agent","reversibility":"Reversible","primary_use":"Hyperpigmentation"}]

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