Rzit 500mg Tablet - Azithromycin (500mg) medicine

Azithromycin 500 mg Tablet: Complete Guide to Uses, Dosage, and Safety

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🏭 Robin Pharmaceuticals Ltd 📦 strip of 3 tablets 💊 Allopathy 📅 Updated: Sep 24, 2026
⚠️ Hepatotoxicity Risk 📋 Prescription Required 💊 Generic Available
Medically Reviewed
11 min read
Evidence: Well-established for approved indications.
Reviewed by
SaathiMed Expert Panel | Sep 24, 2026

When to Call Your Doctor IMMEDIATELY

  • Swelling of the face, lips, tongue, or throat
  • Difficulty breathing or wheezing
  • Severe or persistent diarrhea, especially with blood or mucus
  • Yellowing of the skin or eyes (jaundice)
  • Dark urine or pale stools
  • Fast, irregular, or pounding heartbeat
  • Severe abdominal pain that does not go away
  • Signs of severe skin reaction such as blistering or peeling

If experiencing severe symptoms, call emergency services immediately.

What is Rzit 500mg Tablet used for?

This medicine contains azithromycin 500 mg, a macrolide antibiotic used to treat bacterial infections such as pneumonia, bronchitis, sinusitis, skin infections, and certain sexually transmitted infections. It works by stopping bacterial protein synthesis. It is not effective against viral infections like the common cold or flu.

  • Generic Name: Azithromycin (500mg)
  • Manufacturer: Robin Pharmaceuticals Ltd
  • Form: Allopathy
  • Pregnancy Category: Consult doctor
  • Prescription Required: Yes

🇮🇳 Rzit 500mg Tablet के बारे में (Hindi Summary)

उपयोग: यह दवा एज़िथ्रोमाइसिन 500 मिलीग्राम युक्त एक एंटीबायोटिक है, जिसका उपयोग बैक्टीरियल संक्रमणों के इलाज के लिए किया जाता है। यह निमोनिया, ब्रोंकाइटिस, साइनसाइटिस, त्वचा संक्रमण, और कुछ यौन संचारित संक्रमणों के इलाज में प्रभावी है। यह वायरल संक्रमण जैसे सर्दी-जुकाम या फ्लू पर काम नहीं करती। इसे डॉक्टर के निर्देशानुसार पूरा कोर्स करें, भले ही लक्षण ठीक हो जाएं।

साइड इफेक्ट्स: इस दवा के सामान्य दुष्प्रभावों में दस्त, मतली, पेट दर्द, और सिरदर्द शामिल हैं। ये आमतौर पर हल्के होते हैं और अपने आप ठीक हो जाते हैं। गंभीर दुष्प्रभाव दुर्लभ हैं, लेकिन एलर्जी, लीवर की समस्या, या दिल की धड़कन में अनियमितता हो सकती है। अगर आपको पीलिया, गहरे रंग का पेशाब, या सांस लेने में तकलीफ हो, तो तुरंत डॉक्टर से मिलें।

सुरक्षा सलाह: इस दवा को डॉक्टर के बताए अनुसार ही लें। पूरा कोर्स पूरा करें, चाहे आप बेहतर महसूस करें। एंटासिड के साथ इस दवा को न लें, कम से कम 2 घंटे का अंतर रखें। अगर आपको लीवर या दिल की बीमारी है, तो डॉक्टर को बताएं। गर्भवती या स्तनपान कराने वाली महिलाएं डॉक्टर से सलाह लें। दवा को ठंडी और सूखी जगह पर रखें।

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

💊 Rzit 500mg Tablet Uses & Benefits

[{"condition":"Community-acquired pneumonia","description":"Used to treat mild to moderate pneumonia caused by susceptible bacteria, often as part of a combination regimen.","evidence":"Well-established"},{"condition":"Acute bacterial exacerbation of chronic bronchitis","description":"Helps clear bacterial infection in people with chronic lung disease who develop worsening symptoms.","evidence":"Well-established"},{"condition":"Acute bacterial sinusitis","description":"Prescribed when symptoms suggest a bacterial sinus infection rather than a viral cold.","evidence":"Well-established"},{"condition":"Pharyngitis and tonsillitis","description":"Used as an alternative for streptococcal throat infection in people who cannot take penicillin.","evidence":"Well-established"},{"condition":"Skin and soft tissue infections","description":"Treats uncomplicated skin infections such as cellulitis and erysipelas caused by susceptible organisms.","evidence":"Well-established"},{"condition":"Urethritis and cervicitis due to Chlamydia trachomatis","description":"A single 1 g dose is commonly used to treat uncomplicated chlamydial infection.","evidence":"Well-established"},{"condition":"Mycobacterium avium complex (MAC) prevention","description":"Used in people with advanced HIV to prevent disseminated MAC infection.","evidence":"Well-established"}]

Off-label uses: [{"condition":"Acne vulgaris","description":"Sometimes used for its anti-inflammatory effects in selected patients, but not a first-line treatment.","evidence":"Limited"},{"condition":"Rosacea","description":"Occasionally prescribed for its anti-inflammatory action in papulopustular rosacea.","evidence":"Limited"},{"condition":"Cryptosporidiosis","description":"Used in some immunocompromised patients, often in combination with other drugs.","evidence":"Limited"}]

Primary treatment for: Bacterial infections

Also treats: Respiratory tract infections, Skin infections, Sexually transmitted infections, Mycobacterium avium complex prevention

📋 Drug Information

Generic Name(s)Azithromycin (500mg)
Brand NameRzit 500mg Tablet
ManufacturerRobin Pharmaceuticals Ltd
Packaging / Formstrip of 3 tablets (Allopathy)
Therapeutic Class
Action Class
Route of AdministrationOral
StorageStore at room temperature between 15°C and 30°C (59°F to 86°F). Keep in a dry place away from direct sunlight and moisture.
Shelf LifeTypically 24 months from the date of manufacture. Check the expiry date on the pack.
WHO GuidelineAzithromycin is included in the WHO Model List of Essential Medicines for the treatment of several bacterial infections, including sexually transmitted infections and respiratory tract infections. It is also recommended by WHO for trachoma elimination programs.
ICMR GuidelineThe Indian Council of Medical Research (ICMR) includes azithromycin in its treatment guidelines for community-acquired pneumonia and certain other infections, with recommendations based on local resistance patterns.

👨‍⚕️ Doctor's Practical Tips

Evidence-based practical advice from experienced clinicians

1
Take this medicine at the same time each day to maintain steady levels in your body.
2
Complete the full course as prescribed, even if you start feeling better after a few days.
3
If you get an upset stomach, take this medicine with a meal or snack.
4
Avoid taking antacids containing aluminum or magnesium within 2 hours of this medicine.
5
Inform your doctor if you have a history of heart rhythm problems or liver disease.
6
Do not share this medicine with others, even if they have similar symptoms.
7
Report any signs of allergic reaction such as rash, itching, or swelling immediately.

🔍 Is This Medicine Right for Your Symptom?

Educational reference. Always consult a doctor for diagnosis.

✅
Fever with productive cough
This medicine is commonly prescribed for bacterial respiratory infections.
Likely Use
✅
Sore throat with white patches
May be used for streptococcal pharyngitis if penicillin cannot be used.
Likely Use
❌
Runny nose and sneezing
This medicine is not effective for viral colds.
Not Primary
✅
Burning urination with discharge
May be used for chlamydial urethritis or cervicitis.
Likely Use

🔬 How This Medicine Works (Pharmacology)

Pharmacokinetics

AbsorptionThis medicine is rapidly absorbed from the gastrointestinal tract after oral administration. The absolute bioavailability is approximately 37% because of partial first-pass metabolism. Food can affect absorption; taking it with food may reduce peak levels, but the total amount absorbed is generally not significantly changed.
DistributionThis medicine distributes widely into body tissues and fluids, including the lungs, tonsils, skin, and genital tract. It achieves high concentrations inside cells, especially phagocytes, which transport it to sites of infection. Protein binding is low and concentration-dependent, ranging from about 7% to 50%.
Protein BindingApproximately 7% to 50%, depending on serum concentration.
MetabolismThis medicine undergoes extensive metabolism in the liver, primarily by CYP3A4 enzymes, although the exact metabolic pathways are not fully characterized. It is converted into several inactive metabolites.
Half-LifeThe terminal elimination half-life is approximately 68 hours, which allows for once-daily dosing and short treatment courses.
ExcretionThis medicine is excreted mainly in the bile as unchanged drug and metabolites. A small amount, about 6% of an oral dose, is excreted in the urine.
BioavailabilityApproximately 37% after oral administration.
Onset of ActionClinical improvement may begin within 24 to 48 hours after starting treatment, but full effect depends on the infection and the patient's response.
Peak Plasma TimeAbout 2 to 3 hours after oral administration on an empty stomach.
Duration of ActionBecause of its long tissue half-life, this medicine continues to work for several days after the last dose. This is why short courses are effective.

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, the bacteria stop growing and are eventually cleared by the body's immune system. This medicine is bacteriostatic at usual doses but can be bactericidal at higher concentrations against certain organisms.

Mechanism Steps

1
Entry into bacterial cell: This medicine penetrates the bacterial cell wall and enters the cytoplasm of susceptible bacteria.
2
Binding to 50S subunit: It binds reversibly to the 50S ribosomal subunit, specifically to the 23S rRNA component.
3
Blocking protein synthesis: This binding prevents the translocation of peptidyl-tRNA from the A site to the P site, halting the addition of new amino acids to the growing protein chain.
4
Growth arrest and bacterial death: Without essential proteins, bacteria cannot multiply and are eventually killed or cleared by the immune system.

💡 How to Take Rzit 500mg Tablet

Strength: Tablet, 500 mg

1Take this medicine by mouth with or without food.
2Swallow the tablet whole with a glass of water.
3If it upsets your stomach, take it with a meal.
4Do not crush, chew, or break the tablet unless your doctor advises.
5Take it at the same time each day to maintain steady levels.
6Complete the full course as prescribed, even if symptoms improve.

Dosage Information

Adult DosageThe usual adult dose for many infections is 500 mg once daily for 3 to 5 days, or a single 1 g dose for certain infections such as uncomplicated chlamydial urethritis. For community-acquired pneumonia, a common regimen is 500 mg on day 1 followed by 250 mg once daily on days 2 to 5. 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 susceptible to side effects such as heart rhythm changes and hearing problems. No specific dose adjustment is usually required, but use with caution and monitor closely.
Renal ImpairmentNo dose adjustment is generally needed for mild to moderate renal impairment. In severe renal impairment (creatinine clearance less than 10 mL/min), use with caution as experience is limited.
Hepatic ImpairmentNo specific dose adjustment is recommended for mild to moderate hepatic impairment. In severe hepatic impairment, use with caution and monitor liver function.
Maximum Daily DoseThe maximum recommended total dose is 1 g per day for a single-day regimen, or 500 mg per day for multi-day regimens. Do not exceed the prescribed dose.

Dosage Timeline

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

🍽️ Food Timing Guide

With food
May take with or without food
Food can reduce stomach upset but may slightly reduce peak levels.
Antacids (aluminum/magnesium)
Separate by at least 2 hours
They can reduce absorption of this medicine.

⏰ 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 Rzit 500mg Tablet

✅ Common Side Effects

Diarrhea (Common (5-10%))
Drink plenty of fluids. If diarrhea is severe or contains blood, contact your doctor.
Nausea (Common (5-10%))
Take with food if it upsets your stomach. If nausea persists, consult your doctor.
Abdominal pain (Common (5-10%))
Usually settles. Avoid spicy food. If pain is severe, seek medical advice.
Headache (Common (5-10%))
Rest and stay hydrated. Consult doctor if headache is severe or persistent.
Vomiting (Uncommon (1-5%))
Take small sips of water. If vomiting is persistent, contact your doctor.

🚨 Serious Side Effects

Severe allergic reaction (anaphylaxis) (Rare (<0.1%))
Seek emergency medical help immediately if you have swelling of the face, lips, tongue, or throat, difficulty breathing, or a severe rash.
Liver injury (Rare (<0.1%))
Stop the medicine and seek immediate medical attention if you notice yellowing of the skin or eyes, dark urine, or severe abdominal pain.
Irregular heart rhythm (QT prolongation) (Rare (<0.1%))
Seek immediate medical help if you experience a fast, irregular, or pounding heartbeat, dizziness, or fainting.
Severe skin reactions (Stevens-Johnson syndrome) (Very rare (<0.01%))
Stop the medicine and go to the emergency department if you develop a painful rash with blisters or peeling skin.
Clostridioides difficile-associated diarrhea (Rare (<0.1%))
Contact your doctor if you develop severe, persistent diarrhea, even weeks after finishing the antibiotic.

⚠️ Rare Side Effects

Taste disturbance
Usually resolves after stopping the medicine. Consult your doctor if it bothers you.
Hearing problems (ototoxicity)
Report any ringing in the ears or hearing loss to your doctor promptly.
Low blood pressure
Seek medical attention if you feel faint or dizzy.
Pancreatitis
Seek immediate care for severe upper abdominal pain that may radiate to the back.

Consult your doctor if you experience any unusual symptoms.

🔬 Drug Interactions

Drug Severity Effect
Warfarin Major
Digoxin Major
Amiodarone Major
Ergotamine Major
Antacids (Al/Mg) Moderate
Cyclosporine Moderate
Statins Moderate
Fluconazole Moderate
Cimetidine Minor
Methylprednisolone Minor

🚨 Major Interactions

  • Warfarin
  • Digoxin
  • Ergotamine or dihydroergotamine
  • Amiodarone
  • Antacids containing aluminum or magnesium

⚡ Moderate Interactions

  • Cyclosporine
  • HMG-CoA reductase inhibitors (statins)
  • Nelfinavir
  • Fluconazole

🍷 Alcohol Interaction

There is no direct interaction between this medicine and alcohol, but alcohol may worsen stomach upset and dizziness. It is best to avoid alcohol while taking this medicine and until you feel fully recovered.

🔎 Check Your Other Medicines

Educational tool. Always confirm with your doctor or pharmacist.

🛡️ Safety & Warnings

🚫 Contraindications

["Known hypersensitivity to azithromycin, erythromycin, or any macrolide antibiotic","History of cholestatic jaundice or hepatic dysfunction associated with prior azithromycin use","Concurrent use with ergotamine or dihydroergotamine"]

⚠️ Warnings & Precautions

["Use with caution in patients with liver disease.","Use with caution in patients with QT prolongation or risk factors for it.","May cause severe allergic reactions; stop and seek help if they occur.","Can cause Clostridioides difficile-associated diarrhea; report persistent diarrhea.","May worsen muscle weakness in patients with myasthenia gravis.","Avoid use in patients with a history of macrolide-associated liver problems.","Do not use for viral infections; it will not help and may cause harm."]

🤱 Lactation Safety

This medicine passes into breast milk in small amounts. It is generally considered compatible with breastfeeding, but monitor the infant for diarrhea, vomiting, or rash. Consult your doctor before use while breastfeeding.

💊 Overdose Management

Overdose with this medicine may cause nausea, vomiting, diarrhea, and hearing loss. There is no specific antidote. Treatment is supportive and symptomatic. If you suspect an overdose, contact your doctor or a poison control center immediately.

⏰ 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.

Additional Safety Advice

General Safety

Take this medicine exactly as prescribed by your doctor. Do not share it with others or use it for a different infection. Complete the full course even if symptoms improve after a few days. Inform your doctor if you have liver disease, heart rhythm problems, or myasthenia gravis. Avoid taking antacids containing aluminum or magnesium within two hours of this medicine, as they can reduce its absorption. Tell your doctor about all other medicines you take, especially blood thinners, digoxin, and drugs that affect heart rhythm. Do not start or stop any medicine without consulting your doctor. If you miss a dose, take it as soon as you remember unless it is almost time for the next dose; do not double the dose. Store this medicine at room temperature away from moisture and direct sunlight. Keep out of reach of children.

👴 Special Considerations for Elderly

💡 For Patients Above 65

Elderly patients may be more prone to side effects such as heart rhythm changes and hearing problems. Use with caution and monitor closely. No specific dose adjustment is usually required.

🤰 Pregnancy Planning (TTC)

If you are planning pregnancy, consult your doctor before taking this medicine. It is generally considered safe when needed, but your doctor will weigh the benefits and risks.

🏥 Post-Surgery Considerations

If you are scheduled for surgery, inform your surgeon that you are taking this medicine. It may interact with other medications used during surgery. Your doctor may advise you to stop it before surgery.

🦷 Dental Procedures

Inform your dentist if you are taking this medicine. It may interact with other medications or affect healing. Your dentist may coordinate with your doctor.

💚 Lifestyle Tips for Better Results

🏃
Get plenty of rest to help your body fight the infection.
🥗
Drink plenty of fluids to stay hydrated.
😴
Eat a balanced diet rich in fruits and vegetables.
💧
Avoid close contact with others to prevent spreading infection.
🧘
Practice good hand hygiene.
🌞
Avoid alcohol and smoking while recovering.

🏋️ Exercise Considerations

You may feel tired or dizzy while taking this medicine. Avoid strenuous exercise until you feel fully recovered. Light activity like walking is fine if you feel up to it.

🥗 Diet Recommendations

Stay well hydrated with water and clear fluids.
Include probiotic-rich foods like yogurt to help maintain gut health.
Avoid spicy and oily foods if you have stomach upset.
Eat small, frequent meals if you have nausea.

💼 Impact on Daily Work & Life

This medicine may cause dizziness or tiredness in some people. Avoid driving or operating heavy machinery if you feel affected. Most people can continue their normal daily activities, but take it easy until you recover.

🛑 When to Stop This Medicine

Stop this medicine only after completing the prescribed course or if your doctor advises you to stop. If you experience a serious side effect such as an allergic reaction, stop immediately and seek medical help. Do not stop early just because you feel better, as this can lead to recurrence of infection and antibiotic resistance.

📅 Long-Term Use Effects

Long-term use of this medicine is not recommended unless specifically prescribed for a chronic condition such as MAC prevention. Prolonged use may lead to bacterial resistance, fungal overgrowth, and rare side effects like hearing loss or liver problems. Regular monitoring may be required if used for extended periods.

🌿 Non-Medicine Approaches

These can complement medicine but do not replace prescribed treatment.

Other antibiotics

Depending on the infection and sensitivity, other antibiotics like amoxicillin or clarithromycin may be used.

Evidence: Well-established
Supportive care

Rest, fluids, and symptomatic treatment can help while the infection resolves.

Evidence: Well-established

💉 Vaccination Considerations

💉 If You're Getting Vaccinated

This medicine does not interact with vaccines. However, if you are due for a vaccine, inform your doctor. Live vaccines should generally be avoided during acute infection.

📦 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. Keep it in your hand luggage to avoid loss or temperature extremes. Store at room temperature and protect from moisture. If crossing time zones, continue your dosing schedule as close to the original times as possible. Check local customs regulations for carrying prescription medicines.

💰 Cost Analysis & Savings

👥 Real Patient Stories

Educational, anonymized scenarios. Individual results may vary.

👤 A 35-year-old man with a persistent cough and fever diagnosed with bronchitis.
He was prescribed this medicine for 5 days. He took it regularly with breakfast and completed the course. His cough and fever improved within 3 days, and he felt completely well by day 5. He experienced mild stomach upset on the first day, which went away after taking it with food.
💡 Lesson: Taking this medicine with food can reduce stomach upset, and completing the full course ensures the infection is fully treated.
👤 A 28-year-old woman with a urinary tract infection and chlamydia.
She was given a single 1 g dose of this medicine. She was advised to avoid alcohol and to inform her partner for testing. Her symptoms resolved within a week. She was also counseled about safe sex practices.
💡 Lesson: A single dose can be effective for certain infections, but partner notification and safe practices are important to prevent reinfection.

💬 Questions Patients Often Ask

Q: How long does it take to work?

A: You may start feeling better within 24 to 48 hours, but it is important to complete the full course as prescribed.

Q: Can I take it with food?

A: Yes, you can take it with or without food. If it upsets your stomach, take it with a meal.

Q: What should I do if I miss a dose?

A: 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.

Q: Is it safe during pregnancy?

A: It is generally considered acceptable when clearly needed, but you should consult your doctor before use.

Q: Can I drink alcohol while taking it?

A: There is no direct interaction, but alcohol may worsen side effects like dizziness and stomach upset. It is best to avoid it.

🤔 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?

🔄 Substitutes for Rzit 500mg Tablet

View All

Alternative brands with exact same active ingredient:

Medical Note: Always consult your doctor before switching medications.

🛑 Myths vs. Facts

  • Myth: Azithromycin can cure the common cold.
    Fact: Azithromycin is an antibiotic and does not work against viruses, including the common cold.
  • Myth: You can stop taking azithromycin as soon as you feel better.
    Fact: You should complete the full course as prescribed to prevent the infection from returning and to reduce antibiotic resistance.
  • Myth: Azithromycin is safe for everyone.
    Fact: It is not safe for people with known macrolide allergy or certain heart and liver conditions. Always consult a doctor.
  • Myth: Azithromycin and alcohol cannot be mixed at all.
    Fact: There is no direct interaction, but alcohol may worsen side effects like dizziness and stomach upset. It is best to avoid it.

🔄 Alternative Options

Generic Alternatives

  • Azithromycin 500 mg tablet (various manufacturers)

Brand Alternatives

  • Azee 500
  • Azithral 500
  • Zithromax 500
  • Azi 500

📊 Comparison with Similar Medicines

[{"medicine":"Azithromycin 500 mg","class":"Macrolide antibiotic","usual_dose":"500 mg once daily for 3-5 days","spectrum":"Broad-spectrum, including atypical pathogens"},{"medicine":"Clarithromycin 500 mg","class":"Macrolide antibiotic","usual_dose":"500 mg twice daily","spectrum":"Similar to azithromycin, more GI side effects"},{"medicine":"Amoxicillin 500 mg","class":"Penicillin antibiotic","usual_dose":"500 mg three times daily","spectrum":"Narrower, not effective against atypical pathogens"}]

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