Erythromycin 333mg Tablet: Complete Medicine Guide
Clinical Reference Standards: CDSCO (Central Drugs Standard Control Organisation), Indian Pharmacopoeia (IP) & WHO | Last Updated: September 2026
When to Call Your Doctor IMMEDIATELY
- Blood in stool or vomit
- Severe abdominal pain
- Chest pain or difficulty breathing
- Severe headache with visual changes
- Sudden swelling of face, lips, or throat
- Yellowing of skin or eyes
- Decreased urine output
- Irregular or rapid heartbeat
- Severe skin rash with blisters or peeling
If experiencing severe symptoms, call emergency services immediately.
What is eb 333mg tablet used for?
This medicine contains erythromycin 333 mg, a macrolide antibiotic used to treat bacterial infections such as respiratory tract infections, skin infections, and sexually transmitted infections. It works by stopping bacterial protein synthesis. Take it exactly as prescribed, complete the full course, and avoid alcohol. Common side effects include nausea, diarrhea, and stomach cramps.
- Generic Name: Erythromycin (333mg)
- Manufacturer: Sysmed Laboratories Pvt Ltd
- Form: Allopathy
- Pregnancy Category: Consult doctor
- Prescription Required: Yes
🇮🇳 eb 333mg tablet के बारे में (Hindi Summary)
उपयोग: यह दवा एरिथ्रोमाइसिन 333 मिलीग्राम की एक एंटीबायोटिक गोली है, जिसका उपयोग बैक्टीरियल संक्रमणों के इलाज के लिए किया जाता है। यह श्वसन तंत्र के संक्रमण, त्वचा के संक्रमण, और कुछ यौन संचारित रोगों के इलाज में प्रभावी है। यह बैक्टीरिया के प्रोटीन संश्लेषण को रोककर उन्हें मारती है। इसे डॉक्टर के निर्देशानुसार पूरा कोर्स करें, भले ही आप बेहतर महसूस करें। शराब का सेवन न करें। आम दुष्प्रभावों में मतली, दस्त, और पेट दर्द शामिल हैं।
साइड इफेक्ट्स: इस दवा के सबसे आम दुष्प्रभाव पेट और आंतों से जुड़े होते हैं। कई लोगों को मतली, उल्टी, दस्त, या पेट में ऐंठन का अनुभव होता है। ये आमतौर पर हल्के होते हैं और दवा के साथ शरीर के समायोजन के साथ सुधर जाते हैं। दवा को भोजन के साथ लेने से पेट की परेशानी कम हो सकती है। कुछ लोगों को धातु जैसा स्वाद या हल्के दाने हो सकते हैं। दुर्लभ लेकिन गंभीर दुष्प्रभावों में गंभीर एलर्जी, यकृत की समस्या, और हृदय की धड़कन में बदलाव शामिल हैं। यदि आपको आंखों या त्वचा का पीलापन, गहरे रंग का मूत्र, गंभीर पेट दर्द, या अनियमित दिल की धड़कन महसूस हो, तो तुरंत चिकित्सा सहायता लें।
सुरक्षा सलाह: इस दवा को अपने डॉक्टर के निर्देशानुसार ही लें। खुराक न छोड़ें और न ही जल्दी बंद करें, भले ही आप बेहतर महसूस करें। संक्रमण को पूरी तरह खत्म करने के लिए पूरा कोर्स करें। हर खुराक को एक गिलास पानी के साथ लें, और अगर पेट खराब हो तो भोजन के साथ लें। इस दवा के साथ शराब का सेवन न करें। एंटासिड या एसिड कम करने वाली दवाओं को इस दवा से 2 घंटे पहले या बाद में लें। यदि आपको यकृत रोग, हृदय की लय की समस्या, या मायस्थेनिया ग्रेविस है, तो अपने डॉक्टर को बताएं। इस दवा से आपकी त्वचा सूरज के प्रति अधिक संवेदनशील हो सकती है, इसलिए सनस्क्रीन का उपयोग करें। यदि आप गर्भवती हैं, गर्भधारण की योजना बना रही हैं, या स्तनपान करा रही हैं, तो डॉक्टर से सलाह लें।
💊 eb 333mg tablet Uses & Benefits
[{"condition":"Respiratory tract infections","description":"Used to treat bacterial infections of the throat, sinuses, and lungs, including pharyngitis, tonsillitis, and community-acquired pneumonia.","evidence":"Well-established"},{"condition":"Skin and soft tissue infections","description":"Effective against many bacteria that cause skin infections such as cellulitis, erysipelas, and impetigo.","evidence":"Well-established"},{"condition":"Sexually transmitted infections","description":"Used for the treatment of chlamydia and as an alternative for gonorrhea in patients allergic to penicillin.","evidence":"Well-established"},{"condition":"Pertussis (whooping cough)","description":"Prescribed to treat and prevent the spread of whooping cough, especially in close contacts.","evidence":"Well-established"},{"condition":"Diphtheria","description":"Used as an adjunct to antitoxin for the treatment of diphtheria and to eliminate the carrier state.","evidence":"Well-established"},{"condition":"Legionnaires' disease","description":"An alternative treatment for Legionella pneumonia, often in combination with other antibiotics.","evidence":"Moderate"}]
Off-label uses: [{"condition":"Gastroparesis","description":"Erythromycin has prokinetic effects and is sometimes used off-label to stimulate stomach emptying in diabetic gastroparesis.","evidence":"Limited"},{"condition":"Preterm premature rupture of membranes","description":"Sometimes used off-label to prolong pregnancy in women with preterm premature rupture of membranes.","evidence":"Limited"}]
Primary treatment for: Bacterial infections
Also treats: Respiratory tract infections, Skin infections, Sexually transmitted infections, Pertussis, Diphtheria
📋 Drug Information
| Generic Name(s) | Erythromycin (333mg) |
| Brand Name | eb 333mg tablet |
| Manufacturer | Sysmed Laboratories Pvt Ltd |
| Packaging / Form | Varies by brand (Allopathy) |
| Therapeutic Class | ANTI INFECTIVES |
| Action Class | Macrolides |
| Route of Administration | Oral |
| Storage | Store at room temperature between 15°C and 30°C (59°F to 86°F). Keep away from direct sunlight, moisture, and heat. Do not refrigerate unless specified on the label. Keep in the original container, tightly closed. Keep out of reach of children. |
| Shelf Life | The shelf life is typically 24 months from the date of manufacture, but refer to the expiry date printed on the packaging. |
| WHO Guideline | Erythromycin is included in the WHO Model List of Essential Medicines for the treatment of several bacterial infections, including respiratory tract infections, sexually transmitted infections, and pertussis. It is recommended as an alternative for patients allergic to penicillin. |
| ICMR Guideline | The Indian Council of Medical Research (ICMR) recognizes erythromycin as a first-line or alternative antibiotic for various infections, including community-acquired pneumonia, pharyngitis, and chlamydia, based on local resistance patterns and patient allergies. |
👨⚕️ Doctor's Practical Tips
Evidence-based practical advice from experienced clinicians
🔍 Is This Medicine Right for Your Symptom?
Educational reference. Always consult a doctor for diagnosis.
🔬 How This Medicine Works (Pharmacology)
Pharmacokinetics
How It Works
This medicine works by binding to the 50S ribosomal subunit of susceptible bacteria. This binding blocks the translocation step of protein synthesis, preventing the bacteria from making essential proteins needed for growth and multiplication. As a result, bacterial growth is stopped, and the body's immune system can eliminate the infection. Erythromycin is considered bacteriostatic at usual doses, but it can be bactericidal at higher concentrations against highly susceptible organisms.
Mechanism Steps
💡 How to Take eb 333mg tablet
Strength: Erythromycin 333 mg immediate-release tablet
Dosage Information
| Adult Dosage | The usual adult dose of this medicine is 250 mg to 500 mg taken every 6 to 12 hours, depending on the type and severity of the infection. For severe infections, higher doses may be prescribed. The dose must be individualized by a qualified clinician based on indication, age, weight, renal and hepatic function. Always follow your doctor's prescription exactly. Do not self-adjust the dose. |
| Pediatric Dosage | Pediatric dosing is not established from available information. Consult a pediatrician for appropriate dosing in children. |
| Elderly Dosage | Elderly patients may be more sensitive to the side effects of this medicine, especially hearing loss and heart rhythm changes. Dose adjustment may be necessary based on kidney and liver function. Consult your doctor for personalized dosing. |
| Renal Impairment | Dose adjustment is not usually required in mild to moderate renal impairment. In severe renal impairment, caution is advised, and the dose may need to be adjusted. Consult your doctor. |
| Hepatic Impairment | In patients with severe liver disease, the dose may need to be reduced or the medicine avoided. Close monitoring of liver function is recommended. Consult your doctor for personalized dosing. |
| Maximum Daily Dose | The maximum recommended daily dose is 4 grams (4000 mg) per day in divided doses for adults, but this should only be used under strict medical supervision for severe infections. |
Dosage Timeline
🍽️ Food Timing Guide
⏰ What to Do If You Miss a Dose
⚠️ Side Effects of eb 333mg tablet
✅ Common Side Effects
🚨 Serious Side Effects
⚠️ Rare Side Effects
Consult your doctor if you experience any unusual symptoms.
🔬 Drug Interactions
| Drug | Severity | Effect |
|---|---|---|
| Warfarin | Major | |
| Simvastatin | Major | |
| Ergotamine | Major | |
| Pimozide | Major | |
| Cisapride | Major | |
| Carbamazepine | Major | |
| Cyclosporine | Major | |
| Digoxin | Major | |
| Midazolam | Moderate | |
| Verapamil | Moderate |
🚨 Major Interactions
- Warfarin
- Statins (simvastatin, atorvastatin)
- Ergot alkaloids (ergotamine, dihydroergotamine)
- Pimozide
- Cisapride
- Carbamazepine
- Cyclosporine
- Digoxin
⚡ Moderate Interactions
- Benzodiazepines (midazolam, triazolam)
- Calcium channel blockers (verapamil, diltiazem)
- Corticosteroids (methylprednisolone)
- Theophylline
- Oral contraceptives
🍷 Alcohol Interaction
Alcohol should be avoided while taking this medicine. Alcohol can worsen stomach irritation and increase the risk of nausea, vomiting, and abdominal pain. It may also increase the risk of liver toxicity. Additionally, alcohol can affect the heart rhythm, which may compound the risk of QT prolongation associated with erythromycin.
🔎 Check Your Other Medicines
Educational tool. Always confirm with your doctor or pharmacist.
🛡️ Safety & Warnings
🚫 Contraindications
["Known hypersensitivity to erythromycin or other macrolide antibiotics","Concurrent use with ergot alkaloids (ergotamine, dihydroergotamine)","Concurrent use with pimozide","Concurrent use with cisapride","History of cholestatic jaundice or hepatic dysfunction associated with prior erythromycin use"]
⚠️ Warnings & Precautions
["Use with caution in patients with liver disease. Monitor liver function.","Use with caution in patients with heart rhythm disorders or electrolyte imbalances. May cause QT prolongation.","May cause severe allergic reactions. Discontinue and seek immediate medical help if signs of anaphylaxis occur.","Can cause Clostridioides difficile-associated diarrhea. Report severe or persistent diarrhea.","May interact with many drugs. Inform your doctor about all medicines you are taking.","Avoid alcohol during treatment.","May cause photosensitivity. Use sunscreen and avoid prolonged sun exposure.","Not effective against viral infections. Do not use for colds or flu.","Complete the full course as prescribed to prevent resistance."]
🤱 Lactation Safety
Erythromycin is excreted in breast milk in small amounts. It is generally considered safe during breastfeeding, but the infant should be monitored for diarrhea, vomiting, or irritability. Consult your doctor before using this medicine while breastfeeding.
💊 Overdose Management
Overdose of this medicine may cause severe nausea, vomiting, diarrhea, and abdominal pain. In severe cases, it can lead to hearing loss, heart rhythm abnormalities, and liver toxicity. If you suspect an overdose, seek emergency medical attention immediately. Treatment is supportive and symptomatic. There is no specific antidote. Gastric lavage may be considered if the overdose is recent. Monitor vital signs, electrolytes, and cardiac rhythm.
⏰ 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 take two doses at the same time to make up for a missed dose. If you are unsure, consult your doctor or pharmacist.
Additional Safety Advice
Take this medicine exactly as prescribed by your doctor. Do not skip doses or stop early, even if you feel better. Complete the full course to prevent the infection from returning and to reduce the risk of antibiotic resistance. Take each dose with a full glass of water, preferably with food if it upsets your stomach. Avoid alcohol while taking this medicine because it can worsen stomach irritation and may affect how the medicine works. Do not take antacids or acid-reducing medicines within two hours of this medicine, as they can reduce its absorption. Inform your doctor if you have liver disease, heart rhythm problems, or myasthenia gravis. This medicine can make your skin more sensitive to sunlight, so use sunscreen and avoid prolonged sun exposure. If you are pregnant, planning pregnancy, or breastfeeding, talk to your doctor before using this medicine. Keep this medicine out of reach of children and store it at room temperature away from moisture and heat.
👴 Special Considerations for Elderly
💡 For Patients Above 65
Elderly patients may be more sensitive to the side effects of this medicine, especially hearing loss, heart rhythm changes, and liver toxicity. Dose adjustment may be necessary based on kidney and liver function. Regular monitoring of liver function and heart rhythm is recommended. Consult your doctor for personalized dosing.
🤰 Pregnancy Planning (TTC)
If you are planning to become pregnant, consult your doctor before taking this medicine. Erythromycin is generally considered safe during pregnancy, but it should only be used when clearly needed. Discuss the risks and benefits with your doctor.
🏥 Post-Surgery Considerations
If you are scheduled for surgery, inform your surgeon and anesthesiologist that you are taking this medicine. Erythromycin can interact with certain anesthetic agents and may affect heart rhythm. Your doctor may advise you to stop the medicine before surgery.
🦷 Dental Procedures
Inform your dentist that you are taking this medicine before any dental procedure. Erythromycin can interact with certain antibiotics and anesthetics used in dentistry. It may also increase the risk of bleeding if you are taking blood thinners.
💚 Lifestyle Tips for Better Results
🏋️ Exercise Considerations
This medicine may cause dizziness or fatigue in some people. If you experience these effects, avoid strenuous exercise or activities that require alertness, such as driving or operating machinery, until you feel better. Mild exercise like walking is generally safe if you feel up to it.
🥗 Diet Recommendations
💼 Impact on Daily Work & Life
This medicine may cause dizziness, fatigue, or stomach upset, which can affect your ability to drive or operate machinery. If you experience these effects, avoid driving or operating heavy machinery until you feel better. Most people can continue their normal daily activities, but take it easy if you feel unwell. Inform your employer if you need to take time off due to illness.
🛑 When to Stop This Medicine
Do not stop taking this medicine without consulting your doctor. You should complete the full course as prescribed, even if you feel better, to ensure the infection is fully treated and to prevent antibiotic resistance. If you experience severe side effects, your doctor may advise you to stop. Always consult your doctor before stopping.
📅 Long-Term Use Effects
Long-term use of this medicine can lead to antibiotic resistance and may increase the risk of Clostridioides difficile-associated diarrhea. Prolonged use may also affect liver function and heart rhythm. Regular monitoring of liver function and heart rhythm may be required if used for extended periods. It is important to use this medicine only when prescribed and for the shortest duration necessary.
🌿 Non-Medicine Approaches
These can complement medicine but do not replace prescribed treatment.
Another macrolide antibiotic with a longer half-life and fewer dosing intervals.
Evidence: Well-establishedA macrolide antibiotic with similar uses but different side effect profile.
Evidence: Well-establishedFirst-line antibiotic for many bacterial infections if not allergic.
Evidence: Well-established💉 Vaccination Considerations
💉 If You're Getting Vaccinated
This medicine does not interact with vaccines. However, if you are taking it for an infection, you should postpone vaccination until you have recovered, unless your doctor advises otherwise. Antibiotics do not affect the efficacy of vaccines.
📦 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
✅ DO
Keep out of reach of children
❌ DON'T
Do not use after expiry date
✈️ Traveling with This Medicine
When traveling, carry this medicine in its original packaging with the prescription label. Bring a copy of your prescription or a letter from your doctor, especially for international travel. Store it in a cool, dry place away from direct sunlight. If crossing time zones, adjust dosing times gradually to maintain even intervals, but consult your doctor for specific advice. Keep it in your carry-on luggage to avoid loss or temperature extremes. Check customs regulations for restricted medicines before traveling.
💰 Cost Analysis & Savings
👥 Real Patient Stories
Educational, anonymized scenarios. Individual results may vary.
💬 Questions Patients Often Ask
A: You may start to feel better within 1 to 2 days, but it may take 3 to 5 days for significant improvement. Complete the full course as prescribed.
A: Yes, you can take it with food to reduce stomach upset. However, avoid taking it with acidic foods or drinks as they may reduce absorption.
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 dose.
A: It is best to avoid alcohol while taking this medicine, as it can worsen stomach irritation and increase the risk of liver toxicity.
A: Erythromycin is generally considered safe during pregnancy when prescribed by a doctor. However, consult your doctor before use.
🤔 Common Patient Concerns
🔄 Substitutes for eb 333mg tablet
View AllAlternative brands with exact same active ingredient:
-
eromed 333mg tabletComed Chemicals Ltd ₹18.60 66.3% CHEAPER
-
osomycin 333mg tabletOsho Pharma Pvt Ltd ₹52.50 4.9% CHEAPER
-
Rekcin 333mg TabletRekvina Laboratories Ltd ₹56.37 2.1% COSTLIER
Medical Note: Always consult your doctor before switching medications.
🛑 Myths vs. Facts
- Myth: Erythromycin can cure viral infections like the common cold.
Fact: Erythromycin is an antibiotic and is only effective against bacterial infections. It does not treat viral infections. - Myth: You can stop taking erythromycin as soon as you feel better.
Fact: You must complete the full course as prescribed, even if you feel better, to prevent the infection from returning and to reduce antibiotic resistance. - Myth: Erythromycin is safe to take with any other medicine.
Fact: Erythromycin interacts with many drugs, including warfarin, statins, and certain heart medicines. Always inform your doctor about all medicines you are taking. - Myth: Erythromycin is the same as penicillin.
Fact: Erythromycin belongs to a different class of antibiotics called macrolides. It is often used as an alternative for people allergic to penicillin.
🔄 Alternative Options
Generic Alternatives
- Erythromycin 333 mg tablet (various manufacturers)
Brand Alternatives
- Eromed 333 mg tablet
- Erythrocin 333 mg tablet
- Eryc 333 mg tablet
- E-Mycin 333 mg tablet