neomex 500mg tablet - Mebendazole (500mg) medicine

Mebex 500mg Tablet: Complete Guide To Uses, Dosage, And Safety

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🏭 Neon Laboratories Ltd 📦 Varies by brand 💊 Allopathy 📅 Updated: Oct 26, 2026
⚠️ Hepatotoxicity Risk 🤰 Pregnancy Category Not established from the available information. However, mebendazole is generally avoided during pregnancy, especially in the first trimester, unless the benefit clearly outweighs the risk. Consult your doctor. 📋 Prescription Required 💊 Generic Available
Medically Reviewed
11 min read
Evidence: High for intestinal worm infections.
Reviewed by
SaathiMed Expert Panel | Oct 26, 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, tongue, or throat, difficulty breathing.
  • Signs of liver problems: yellowing of skin or eyes, dark urine, severe abdominal pain.
  • Blood in stool or vomit.
  • Severe or persistent diarrhea.
  • Unusual tiredness, easy bruising, or frequent infections.
  • Seizures or loss of consciousness.
  • Severe headache with visual changes.

If experiencing severe symptoms, call emergency services immediately.

What is neomex 500mg tablet used for?

This medicine is an anthelmintic used to treat intestinal worm infections such as pinworm, roundworm, whipworm, and hookworm. It works by killing the worms, which are then passed in the stool. The usual adult dose is 100 mg twice daily for 3 days or 500 mg as a single dose, depending on the infection. Always follow your doctor's prescription.

  • Generic Name: Mebendazole (500mg)
  • Manufacturer: Neon Laboratories Ltd
  • Form: Allopathy
  • Pregnancy Category: Consult doctor
  • Prescription Required: Yes

🇮🇳 neomex 500mg tablet के बारे में (Hindi Summary)

उपयोग: यह दवा मेबेंडाजोल 500 मिलीग्राम की गोली है, जिसका उपयोग आंतों के कीड़ों के संक्रमण जैसे पिनवर्म, राउंडवर्म, व्हिपवर्म, हुकवर्म और टेपवर्म के इलाज के लिए किया जाता है। यह कीड़ों को मारती है और उन्हें शरीर से बाहर निकालने में मदद करती है। यह दवा आमतौर पर डॉक्टर के पर्चे पर ही ली जाती है। बच्चों और वयस्कों दोनों में उपयोग की जा सकती है, लेकिन 2 साल से छोटे बच्चों को बिना डॉक्टर की सलाह के न दें। गर्भवती महिलाओं को इस दवा से बचना चाहिए।

साइड इफेक्ट्स: इस दवा के आम दुष्प्रभावों में पेट दर्द, जी मिचलाना, उल्टी, दस्त और सिरदर्द शामिल हैं। ये आमतौर पर हल्के होते हैं और अपने आप ठीक हो जाते हैं। गंभीर दुष्प्रभाव दुर्लभ हैं, लेकिन अगर आपको चकत्ते, सूजन, सांस लेने में कठिनाई, या पीलिया जैसे लक्षण दिखें तो तुरंत डॉक्टर से संपर्क करें।

सुरक्षा सलाह: इस दवा को डॉक्टर के बताए अनुसार ही लें। इसे भोजन के साथ लेने से पेट की परेशानी कम हो सकती है। पूरा कोर्स पूरा करें, भले ही आप बेहतर महसूस करें। शौचालय का उपयोग करने के बाद और खाने से पहले हाथ धोएं। संक्रमण के दौरान दूसरों के निकट संपर्क से बचें। गर्भवती या स्तनपान कराने वाली महिलाएं डॉक्टर से सलाह लें।

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

💊 neomex 500mg tablet Uses & Benefits

  • [{"condition":"Pinworm infection (Enterobius vermicularis)","description":"This medicine is highly effective in eradicating pinworm infections.
  • A single dose is often sufficient, but a repeat dose after two weeks is recommended to prevent reinfection.","evidence":"Well-established"},{"condition":"Roundworm infection (Ascaris lumbricoides)","description":"It paralyzes and kills roundworms in the intestine, which are then passed in the stool.
  • A single dose is usually curative.","evidence":"Well-established"},{"condition":"Whipworm infection (Trichuris trichiura)","description":"This medicine is effective against whipworm, though a longer course may be needed.
  • It helps reduce worm burden and associated symptoms.","evidence":"Well-established"},{"condition":"Hookworm infection (Necator americanus, Ancylostoma duodenale)","description":"It treats hookworm infections by killing the adult worms in the small intestine, improving iron-deficiency anemia associated with the infection.","evidence":"Well-established"},{"condition":"Tapeworm infection (Taenia species)","description":"This medicine is used to treat certain tapeworm infections, although other agents may be preferred.
  • It works by inhibiting the worm's energy metabolism.","evidence":"Moderate"}]

Off-label uses: [{"condition":"Hydatid disease (Echinococcus granulosus)","description":"Sometimes used off-label as an adjunct to surgery or in inoperable cases, but albendazole is generally preferred.","evidence":"Limited"},{"condition":"Capillariasis","description":"May be used off-label for intestinal capillariasis, though evidence is limited.","evidence":"Limited"}]

Primary treatment for: Intestinal worm infections

Also treats: Pinworm infection, Roundworm infection, Whipworm infection, Hookworm infection, Tapeworm infection

📋 Drug Information

Generic Name(s)Mebendazole (500mg)
Brand Nameneomex 500mg tablet
ManufacturerNeon Laboratories Ltd
Packaging / FormVaries by brand (Allopathy)
Therapeutic ClassANTI INFECTIVES
Action ClassAntiprotozoal agents
Route of AdministrationOral
StorageStore at room temperature between 15°C and 30°C (59°F to 86°F). Protect from light and moisture. Keep in the original container.
Shelf Life24 months from the date of manufacture.
WHO GuidelineThe World Health Organization includes mebendazole in its Model List of Essential Medicines for the treatment of soil-transmitted helminthiases. It is recommended for mass deworming programs in endemic areas.
ICMR GuidelineThe Indian Council of Medical Research recommends mebendazole for the treatment of intestinal worm infections as per national deworming guidelines. It is included in the National Deworming Day program in India.

👨‍⚕️ Doctor's Practical Tips

Evidence-based practical advice from experienced clinicians

1
Take this medicine with food to reduce stomach upset.
2
Complete the full course as prescribed, even if symptoms improve.
3
Wash your hands thoroughly after using the toilet and before eating to prevent reinfection.
4
For pinworm infection, all household members should be treated simultaneously to prevent reinfection.
5
Do not share this medicine with others, even if they have similar symptoms.
6
Consult your doctor if symptoms persist after treatment.
7
Avoid alcohol while taking this medicine to prevent dizziness and stomach upset.

🔍 Is This Medicine Right for Your Symptom?

Educational reference. Always consult a doctor for diagnosis.

✅
Anal itching, especially at night
This medicine is commonly prescribed for pinworm infection.
Likely Use
✅
Passing worms in stool
This medicine is used to treat various intestinal worm infections.
Likely Use
✅
Abdominal pain and bloating
May be a sign of worm infection; consult a doctor for diagnosis.
Likely Use
❌
Fever
This medicine is not a primary fever reducer.
Not Primary
❌
Cough
This medicine is not used for respiratory infections.
Not Primary

🔬 How This Medicine Works (Pharmacology)

Pharmacokinetics

AbsorptionThis medicine is poorly absorbed from the gastrointestinal tract, with only about 5-10% of an oral dose reaching systemic circulation. This low absorption is beneficial for treating intestinal worms because it keeps the drug concentrated in the gut where the parasites reside.
DistributionDue to poor absorption, systemic distribution is limited. The small fraction that is absorbed is highly protein-bound and distributes to the liver, kidneys, and other tissues. It does not cross the blood-brain barrier significantly.
Protein BindingApproximately 90-95% of absorbed mebendazole is bound to plasma proteins.
MetabolismThe absorbed portion is extensively metabolized in the liver, primarily by CYP3A4, into inactive metabolites. The primary metabolite is 2-amino-5-benzoylbenzimidazole.
Half-LifeThe elimination half-life of mebendazole is approximately 2.5 to 5.5 hours in healthy adults. It may be prolonged in patients with liver impairment.
ExcretionMost of the drug is excreted unchanged in the feces. Only a small amount of absorbed drug and its metabolites are excreted in the urine (less than 2%).
BioavailabilityThe oral bioavailability of mebendazole is low, estimated at 5-10% due to poor water solubility and extensive first-pass metabolism.
Onset of ActionThe onset of action is typically within 24 to 48 hours after administration, as the worms begin to die and are expelled.
Peak Plasma TimePeak plasma concentration is reached approximately 2 to 4 hours after oral administration.
Duration of ActionThe anthelmintic effect lasts for several days, but a single dose is often sufficient for many infections. For some worms, a repeat dose after 2-3 weeks may be needed.

How It Works

This medicine works by binding to the colchicine-sensitive site of tubulin, inhibiting its polymerization into microtubules. This disrupts the parasite's cytoskeleton, leading to impaired glucose uptake, glycogen depletion, and ultimately cell death. The effect is selective for helminths because they rely heavily on microtubules for glucose absorption, whereas human cells are less affected at therapeutic doses.

Mechanism Steps

1
Binding to beta-tubulin: This medicine binds selectively to the beta-tubulin subunit of the parasite's microtubules.
2
Inhibition of microtubule polymerization: This binding prevents the assembly of microtubules, which are essential for cellular structure and transport.
3
Impaired glucose uptake: Without functional microtubules, the worm cannot absorb glucose from the host, leading to energy depletion.
4
Worm death and expulsion: The parasite dies and is either digested or passed out in the stool, often within a few days.

💡 How to Take neomex 500mg tablet

Strength: Mebendazole 500 mg immediate-release tablet

1Take this medicine by mouth with a full glass of water.
2It can be taken with or without food, but taking it with food may reduce stomach upset.
3Swallow the tablet whole; do not crush or chew unless advised by your doctor.
4Complete the full course as prescribed, even if you feel better.
5Wash your hands thoroughly after using the toilet and before eating.

Dosage Information

Adult DosageFor most intestinal worm infections, the usual adult dose is 100 mg twice daily for 3 days, or 500 mg as a single dose, depending on the specific worm. For pinworm, a single 100 mg dose is often used, repeated after 2 weeks. For roundworm, whipworm, and hookworm, 100 mg twice daily for 3 days is common. For tapeworm, 200 mg twice daily for 3 days may be used. 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. In general, for children over 2 years, the dose is similar to adults but may be adjusted based on weight. For pinworm, a single 100 mg dose is often used, repeated after 2 weeks. Do not use in children under 2 years without medical advice.
Elderly DosageNo specific dose adjustment is required for elderly patients with normal liver and kidney function. However, because elderly patients may have reduced hepatic or renal function, use with caution and monitor for side effects.
Renal ImpairmentNo dose adjustment is typically needed for mild to moderate renal impairment. In severe renal impairment, caution is advised as the drug is primarily excreted in feces, but the small amount excreted renally may accumulate. Consult your doctor.
Hepatic ImpairmentIn patients with liver impairment, the metabolism of mebendazole may be reduced, leading to increased drug levels. Dose reduction or avoidance may be necessary. Consult your doctor for individualized dosing.
Maximum Daily DoseThe maximum recommended daily dose is 500 mg for standard indications. Higher doses may be used in specific cases under medical supervision.

Dosage Timeline

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

🍽️ Food Timing Guide

With food
Take with meals
Reduces stomach upset and may enhance absorption.
High-fat meal
Can be taken with
Increases absorption, but generally safe for intestinal infections.

⏰ What to Do If You Miss a Dose

📌 Less than half the dosing interval has passed
→ Take 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 double dose to catch up.

⚠️ Side Effects of neomex 500mg tablet

✅ Common Side Effects

Abdominal pain (Common (1-10%))
Usually resolves on its own. Take with food to minimize discomfort. Consult doctor if severe or persistent.
Nausea (Common (1-10%))
Take the medicine with a meal. If nausea persists, consult your doctor.
Vomiting (Uncommon (0.1-1%))
Stay hydrated. If vomiting is severe, contact your doctor.
Diarrhea (Uncommon (0.1-1%))
Drink plenty of fluids. If diarrhea is severe or bloody, seek medical attention.
Headache (Uncommon (0.1-1%))
Rest and stay hydrated. Consult doctor if headache is severe or persistent.

🚨 Serious Side Effects

Severe allergic reaction (anaphylaxis) (Rare (<0.1%))
Seek emergency medical help immediately if you experience swelling of the face, lips, tongue, or throat, difficulty breathing, or a severe rash.
Liver toxicity (Rare (<0.1%))
Report yellowing of the skin or eyes, dark urine, or severe abdominal pain to your doctor immediately.
Bone marrow suppression (Very rare (<0.01%))
If you develop unusual tiredness, easy bruising, or frequent infections, contact your doctor for blood tests.
Seizures (Very rare (<0.01%))
Seek immediate medical attention if you experience convulsions or loss of consciousness.

⚠️ Rare Side Effects

Hair loss
Consult your doctor if you notice significant hair loss. It is usually reversible after stopping the medicine.
Dizziness
Avoid driving or operating machinery until you feel normal. Consult your doctor if it persists.

Consult your doctor if you experience any unusual symptoms.

🔬 Drug Interactions

Drug Severity Effect
Metronidazole Major
Cimetidine Major
Carbamazepine Moderate
Phenytoin Moderate
Warfarin Minor

🚨 Major Interactions

  • Metronidazole
  • Cimetidine

⚡ Moderate Interactions

  • Carbamazepine
  • Phenytoin

🍷 Alcohol Interaction

There is no known direct interaction between this medicine and alcohol. However, alcohol may worsen stomach upset or dizziness. It is advisable to avoid alcohol while taking this medicine until you know how it affects you.

🔎 Check Your Other Medicines

Educational tool. Always confirm with your doctor or pharmacist.

🛡️ Safety & Warnings

🚫 Contraindications

["Known hypersensitivity to mebendazole or any component of the formulation","Pregnancy, especially during the first trimester","Children under 2 years of age (unless directed by a doctor)","Concurrent use with metronidazole"]

⚠️ Warnings & Precautions

["Use with caution in patients with liver impairment; dose adjustment may be needed.","Avoid use in pregnancy unless clearly necessary.","Not recommended for children under 2 years without medical advice.","Do not use for longer than prescribed without medical supervision.","May cause dizziness; avoid driving or operating machinery until you know how it affects you.","Wash hands thoroughly after using the toilet and before handling food to prevent reinfection."]

🤱 Lactation Safety

It is not known whether mebendazole passes into breast milk. Due to poor oral absorption, the amount in breast milk is likely to be very low. However, consult your doctor before using this medicine while breastfeeding.

💊 Overdose Management

Overdose with mebendazole is rare due to its poor absorption. If a large amount is ingested, seek immediate medical attention. Treatment is supportive and symptomatic. Gastric lavage may be considered if ingestion is recent. Monitor for signs of liver toxicity or bone marrow suppression.

⏰ Missed Dose

If you miss a dose, take 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 double the dose to catch up.

Additional Safety Advice

General Safety

Take this medicine exactly as prescribed by your doctor. Do not take more or less than the recommended dose. It is best taken with food to reduce stomach upset. Complete the full course even if you feel better after the first dose. Wash your hands thoroughly after using the toilet and before eating to prevent reinfection. Avoid close contact with others while infected, as pinworm eggs can spread easily. Do not share this medicine with anyone else. Keep it out of reach of children. If you are pregnant, planning pregnancy, or breastfeeding, inform your doctor before taking this medicine. Do not drive or operate heavy machinery if you feel dizzy after taking it.

👴 Special Considerations for Elderly

💡 For Patients Above 65

Elderly patients may have reduced liver or kidney function, which can affect the metabolism and excretion of this medicine. Use with caution and monitor for side effects. No specific dose adjustment is usually required, but consult your doctor.

🤰 Pregnancy Planning (TTC)

If you are planning to become pregnant, consult your doctor before taking this medicine. It is generally avoided during pregnancy, especially in the first trimester. Discuss alternative treatments if needed.

🏥 Post-Surgery Considerations

There are no specific restrictions for taking this medicine after surgery. However, inform your surgeon and anesthesiologist that you are taking it. It is generally safe to continue unless advised otherwise.

🦷 Dental Procedures

No specific precautions are needed for dental procedures while taking this medicine. However, inform your dentist about all medicines you are taking.

💚 Lifestyle Tips for Better Results

🏃
Wash your hands thoroughly with soap and water after using the toilet and before eating.
🥗
Keep your fingernails short and clean to prevent egg accumulation.
😴
Wash bedding, towels, and underwear in hot water regularly.
💧
Avoid scratching the anal area to prevent egg transfer to hands.
🧘
Drink boiled or filtered water and wash fruits and vegetables thoroughly.
🌞
Maintain good personal hygiene to prevent reinfection.

🏋️ Exercise Considerations

There are no specific exercise restrictions while taking this medicine. However, if you experience dizziness or fatigue, avoid strenuous activities until you feel better.

🥗 Diet Recommendations

Eat a balanced diet rich in fiber to promote regular bowel movements.
Stay well hydrated to help flush out dead worms.
Include probiotic-rich foods like yogurt to support gut health.
Avoid raw or undercooked meat and fish to prevent reinfection.
Wash all fruits and vegetables thoroughly before consumption.

💼 Impact on Daily Work & Life

This medicine may cause dizziness or headache in some people. If affected, avoid driving or operating heavy machinery until you know how it affects you. Otherwise, it usually does not interfere with daily activities.

🛑 When to Stop This Medicine

Stop taking this medicine after completing the prescribed course. Do not stop early unless advised by your doctor. If you experience severe side effects, stop and seek medical attention immediately.

📅 Long-Term Use Effects

Long-term use of this medicine at high doses may rarely cause liver toxicity, bone marrow suppression, or hair loss. It is not recommended for prolonged use without medical supervision. Regular monitoring of liver function and blood counts may be required if used for extended periods.

🌿 Non-Medicine Approaches

These can complement medicine but do not replace prescribed treatment.

Albendazole

Another anthelmintic that may be used as an alternative for certain worm infections.

Evidence: Well-established
Pyrantel pamoate

Effective for pinworm and roundworm infections, often used in children.

Evidence: Well-established
Good hygiene practices

Essential to prevent reinfection and complement medical treatment.

Evidence: Well-established

💉 Vaccination Considerations

💉 If You're Getting Vaccinated

There are no known interactions between this medicine and vaccines. However, if you are scheduled for vaccination, inform your doctor that you are taking 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, carry this medicine in its original packaging along with a copy of your prescription. Store it at room temperature and protect it from extreme heat or moisture. If you are crossing time zones, continue taking your doses at the same intervals as prescribed. Declare it to customs if required. Keep it in your carry-on luggage to avoid loss.

💰 Cost Analysis & Savings

👥 Real Patient Stories

Educational, anonymized scenarios. Individual results may vary.

👤 A 30-year-old mother noticed her 5-year-old child scratching the anal area at night and having trouble sleeping.
The doctor diagnosed pinworm infection and prescribed this medicine for the child and the entire family. After a single dose, the itching subsided within two days. A repeat dose was given after two weeks. The mother also washed all bedding and toys in hot water to prevent reinfection.
💡 Lesson: Treating all family members and maintaining strict hygiene are crucial to prevent reinfection with pinworms.
👤 A 45-year-old man presented with abdominal pain, bloating, and passing worms in his stool.
He was diagnosed with roundworm infection and prescribed this medicine 100 mg twice daily for 3 days. His symptoms improved significantly by the second day. He was advised to wash vegetables thoroughly and drink boiled water to prevent future infections.
💡 Lesson: Taking the full course of this medicine and following good hygiene practices effectively treats roundworm infections.

💬 Questions Patients Often Ask

Q: How long does it take to work?

A: This medicine usually starts working within 24 to 48 hours. You may see worms in your stool after the first dose. For some infections, a repeat dose after 2 weeks is needed.

Q: Can I take it without food?

A: It can be taken with or without food, but taking it with food reduces the chance of stomach upset.

Q: Is it safe for children?

A: It is generally safe for children over 2 years of age, but the dose should be determined by a pediatrician. Do not give it to children under 2 without medical advice.

Q: Can I take it during pregnancy?

A: This medicine is generally avoided during pregnancy, especially in the first trimester, unless clearly needed. Consult your doctor.

Q: What if I miss a dose?

A: If you miss a dose, take 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 double the dose.

🤔 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?
  • Is it safe for my child?
  • Can I take it during pregnancy?

🔄 Substitutes for neomex 500mg tablet

View All

Alternative brands with exact same active ingredient:

Medical Note: Always consult your doctor before switching medications.

🛑 Myths vs. Facts

  • Myth: Mebendazole can be taken by anyone without a prescription.
    Fact: Mebendazole is a prescription medicine in many countries. It should only be taken under medical supervision, especially in children and pregnant women.
  • Myth: One dose of mebendazole cures all worm infections.
    Fact: While a single dose may be enough for some infections like pinworm, others require a longer course. Always follow your doctor's advice.
  • Myth: Mebendazole is safe to take during pregnancy.
    Fact: Mebendazole is generally avoided during pregnancy, especially in the first trimester, unless clearly needed. Consult your doctor.

🔄 Alternative Options

Generic Alternatives

  • Mebendazole 500 mg tablet (various manufacturers)

Brand Alternatives

  • Mebex 500mg Tablet

📊 Comparison with Similar Medicines

[{"medicine":"Mebendazole","class":"Benzimidazole","spectrum":"Broad","single_dose_efficacy":"High for pinworm, moderate for others","pregnancy_safety":"Avoid"},{"medicine":"Albendazole","class":"Benzimidazole","spectrum":"Broad","single_dose_efficacy":"High for many worms","pregnancy_safety":"Avoid"},{"medicine":"Pyrantel pamoate","class":"Tetrahydropyrimidine","spectrum":"Narrow","single_dose_efficacy":"High for pinworm and roundworm","pregnancy_safety":"Caution"}]

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