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Althrocin 500 mg

Erythromycin 500 mg (as erythromycin base) tablet

₹129MRP ₹136In stock

Delivery across India. Free above ₹999; ₹49 from ₹499, ₹99 below. Chennai express delivery is chargeable.

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Althrocin 500 mg is used for bacterial infections caused by susceptible organisms such as respiratory tract infections (pharyngitis/tonsillitis, bronchitis, pneumonia), skin and soft tissue infections, ear infections, and certain sexually transmitted infections (e.g., chlamydial infections) as prescribed by the doctor; also used in penicillin-allergic patients for some infections.

Medically reviewed by Dr. Balaji Krishnan, MBBS · Updated September 2026

Licensed pharmacyPharmacist-verified orderDelivered across India

Key details

Salt: Erythromycin 500 mg (as erythromycin base) tablet
Available variants: 500 mg 10`S
Best price: ₹129
MRP: ₹136
Prescription: Required
Manufacturer: ALEMBIC PHARMA

Ordering notes

Standard delivery across India. No same-day delivery nationally.
Chennai express delivery is possible and chargeable. Learn more
Returns & refunds: orders can be cancelled before dispatch; after dispatch, returns depend on the item category. Read the full policy

Composition of Althrocin 500 mg

Althrocin 500 mg contains Erythromycin 500 mg (as erythromycin base) tablet. It belongs to the Macrolide antibiotic class of medicines.

Uses of Althrocin 500 mg

  • Bacterial infections caused by susceptible organisms such as respiratory tract infections (pharyngitis/tonsillitis
  • bronchitis
  • pneumonia)
  • skin and soft tissue infections
  • ear infections
  • and certain sexually transmitted infections (e.g.
  • chlamydial infections) as prescribed by the doctor; also used in penicillin-allergic patients for some infections.

Key benefits

  • Treats susceptible bacterial infections
  • Useful in penicillin-allergic patients for certain infections
  • Helps relieve infection-related fever and inflammation
  • Effective for respiratory and skin infections
  • Convenient oral tablet dosing

How Althrocin 500 mg works

Erythromycin is a macrolide antibiotic that inhibits bacterial protein synthesis by binding to the 50S ribosomal subunit. This stops bacterial growth (mainly bacteriostatic) and helps clear the infection.

How to take Althrocin 500 mg

Take as prescribed by the physician. Usually taken orally with water; best taken on an empty stomach (1 hour before or 2 hours after food) unless stomach upset occurs, in which case take with food. Complete the full course; do not skip doses.

Take it exactly as your doctor prescribed. Do not change the dose or stop early on your own.

Missed dose and overdose

If you miss a dose

Take it as soon as you remember. If your next dose is almost due, skip the one you missed — never take two doses together to catch up.

If you take too much

An overdose of this medicine can cause vomiting, hearing disturbance and heart rhythm changes. Do not wait for symptoms to appear — go to the nearest emergency department and take the pack or strip with you.

Side effects of Althrocin 500 mg

Most side effects of Althrocin are mild and settle as the body adjusts. Reported side effects include:

  • Nausea
  • vomiting
  • abdominal pain/cramps
  • diarrhoea
  • loss of appetite
  • headache
  • dizziness
  • rash

Stop the medicine and seek help immediately for a rash, swelling of the face or lips, wheezing or difficulty breathing. Tell your doctor about any side effect that persists or worries you.

Safety advice for Althrocin 500 mg

PregnancyConsult doctor (generally considered usable in pregnancy when clearly needed).
BreastfeedingConsult your doctor before using this while breastfeeding.
AlcoholUse with caution (may worsen stomach upset; avoid excess alcohol).
DrivingNot expected to affect your ability to drive.
KidneyUse with caution if you have kidney disease — your doctor may adjust the dose or monitor your kidney function.
LiverConsult your doctor if you have liver disease.
Habit formingNo

Warnings and precautions

Use only for bacterial infections. Inform doctor if you have liver disease, history of jaundice with erythromycin, myasthenia gravis, heart rhythm problems/QT prolongation, low potassium/magnesium, or severe diarrhoea. Stop and seek care if allergic reaction, severe skin rash, or persistent/watery/bloody diarrhoea occurs (risk of C. difficile). May cause liver enzyme elevation or cholestatic hepatitis (rare).

Do not take Althrocin if

Not for anyone with a known allergy to this medicine or to any ingredient in the pack. Not for anyone with a known allergy to macrolide antibiotics, or with certain heart rhythm disorders.

Interactions with other medicines

Warfarin/other anticoagulants (↑bleeding risk), theophylline (↑levels), carbamazepine (↑levels), digoxin (↑levels), ciclosporin/tacrolimus (↑levels), statins such as simvastatin/lovastatin (↑myopathy risk), ergot derivatives (avoid), QT-prolonging drugs (e.g., amiodarone, sotalol, certain antipsychotics/fluoroquinolones) (↑arrhythmia risk), rifampicin (↓erythromycin levels), oral contraceptives (possible reduced efficacy if vomiting/diarrhoea occurs)

How to store Althrocin 500 mg

Store below 25°C in a dry place, protected from light and moisture. Keep out of reach of children.

Expert advice for Althrocin 500 mg

Take it at the same time each day and complete the course. Taking it with food reduces nausea unless the pack says to take it on an empty stomach.

Manufacturer and class

Manufacturer:
ALEMBIC PHARMA
Therapeutic class:
Antibiotic
Drug class:
Macrolide antibiotic

Substitutes for Althrocin 500 mg

Medicines with the same active ingredient (Erythromycin 500 mg (as erythromycin base) tablet). Ask your doctor or pharmacist before switching brands.

MedicinePackPricevs Althrocin 500 mg
Eltocin 250 mg TabletIPCA LABORATORIES LTD`tablet · 15`S₹9427% cheaper
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Althrocin 500 mg FAQs

What is Althrocin 500 mg used for?
Althrocin 500 mg is commonly used for Bacterial infections caused by susceptible organisms such as respiratory tract infections (pharyngitis/tonsillitis, bronchitis, pneumonia), skin and soft tissue infections, ear infections, and certain sexually transmitted infections (e.g., chlamydial infections) as prescribed by the doctor; also used in penicillin-allergic patients for some infections. Always follow your doctor's advice, this information is for educational purposes and not a substitute for professional medical guidance.
What is the salt in Althrocin 500 mg?
Althrocin 500 mg contains Erythromycin 500 mg (as erythromycin base) tablet. If you are allergic to any of these active ingredients or excipients, do not take this medicine and speak to your doctor first.
How should I take Althrocin 500 mg?
Take as prescribed by the physician. Take it exactly as prescribed; do not change the dose or stop early without talking to your doctor.
How does Althrocin 500 mg work?
Erythromycin is a macrolide antibiotic that inhibits bacterial protein synthesis by binding to the 50S ribosomal subunit.
Is Althrocin 500 mg a prescription medicine?
Yes. Althrocin 500 mg is a prescription-only (Rx) medicine. Upload a valid prescription from a registered medical practitioner during checkout. We cannot dispense it without a valid Rx.
What are the common side effects of Althrocin 500 mg?
The side effects reported most often with Althrocin are Nausea, vomiting, abdominal pain/cramps, diarrhoea, loss of appetite. Most are mild and settle as the body adjusts; tell your doctor if any of them persist or worry you, and stop the medicine and seek help at once for a rash, swelling of the face or lips, or difficulty breathing.
Can Althrocin 500 mg be taken during pregnancy?
Consult doctor (generally considered usable in pregnancy when clearly needed). Always tell your doctor if you are pregnant, planning a pregnancy or breastfeeding before starting Althrocin.
Can I drink alcohol while taking Althrocin 500 mg?
Use with caution (may worsen stomach upset; avoid excess alcohol).
What if I miss a dose of Althrocin 500 mg?
Take it as soon as you remember.
Is Althrocin 500 mg habit forming?
No. Althrocin 500 mg is not known to be habit forming when taken as prescribed.
Is there a cheaper substitute for Althrocin 500 mg?
Eltocin 250 mg Tablet has the same active ingredient and strength and is listed from ₹94 on PingMeDoc Pharmacy. Ask your doctor or pharmacist before switching brands, the salt is the same, but excipients and release profiles can differ.
How much does Althrocin 500 mg cost on PingMeDoc Pharmacy?
Althrocin 500 mg starts at ₹129 (MRP ₹136) on PingMeDoc Pharmacy. Available in 500 mg 10`S. Final price is confirmed at checkout and may vary by variant and location.
Who manufactures Althrocin 500 mg?
Althrocin 500 mg is manufactured by ALEMBIC PHARMA. PingMeDoc Pharmacy sources medicines only from licensed manufacturers and distributors.
How is Althrocin 500 mg delivered?
Althrocin 500 mg is delivered across India via our licensed pharmacy partners. Standard delivery timelines are confirmed at checkout. Chennai customers can opt for chargeable same-city express delivery.

Althrocin 500 mg, Quick facts

Salt
Erythromycin 500 mg (as erythromycin base) tablet
Best price
₹129
MRP
₹136
Prescription
Required (Rx)
Schedule
Schedule H
Brand
ALEMBIC PHARMA
Manufacturer
ALEMBIC PHARMA
Therapeutic class
Antibiotic
Drug class
Macrolide antibiotic
Habit forming
No
Variants
500 mg 10`S
Delivery
Standard across India

References

The information on Althrocin 500 mg is compiled from the manufacturer's prescribing information and the sources below, and is reviewed by a registered medical practitioner. It does not replace advice from your own doctor.

  1. Manufacturer labeling/pack insert
  2. Indian Pharmacopoeia/standard drug references, established medical literature (macrolide antibiotic guidelines)
  3. CDSCO-approved product information where applicable
  4. Central Drugs Standard Control Organisation (CDSCO), Ministry of Health & Family Welfare, Government of India, approved drug and schedule listings.
  5. National List of Essential Medicines (NLEM) 2022, Government of India.
  6. Manufacturer's package insert / prescribing information for Althrocin 500 mg.
  7. World Health Organization, ATC/DDD classification and Model Formulary for the active ingredient.

Next steps

Safety disclaimer

Product information is for general awareness and does not replace professional medical advice. Always follow a clinician's guidance and upload a valid prescription when required.