Erythro 500
✅ Fights bacterial infections
✅ Treats respiratory infections
✅ Clears skin infections
✅ Alleviates ear infections
✅ Combats sexually transmitted infections
Erythro 500 contains Erythromycin.
✓ Medically reviewed by Morgan Ellis — Pharmacy Researcher · 8 years experience · Last reviewed: May 2026
⚡ Quick Answer — What is Erythro 500?
Erythro 500 is a macrolide antibiotic for atypical pneumonia, streptococcal pharyngitis (penicillin-allergic), and chlamydia. Manufactured under WHO-GMP standards.
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Product Overview
Erythro 500 is a medication containing the active ingredient Erythromycin Stearate 500 mg. It belongs to the macrolide class of antibiotics and is commonly used to treat various bacterial infections. Erythro 500 works by inhibiting the growth of bacteria, thereby stopping the infection from spreading and allowing the body’s immune system to effectively fight off the remaining bacteria.
Uses
Erythro 500 is prescribed to treat a wide range of bacterial infections, including respiratory tract infections, skin infections, ear infections, and certain sexually transmitted infections caused by susceptible bacteria. It is effective against both gram-positive and some gram-negative bacteria, making it a versatile antibiotic option for many common infections.
How to Use
Take Erythro 500 exactly as prescribed by your healthcare provider. The tablets should be swallowed whole with a full glass of water, either with or without food, unless otherwise directed by your doctor. Do not crush, chew, or break the tablets, as this may alter the release mechanism and reduce the effectiveness of the medication. It’s important to complete the full course of treatment, even if you start to feel better before the medication is finished.
How it Works
Erythro 500 works by inhibiting bacterial protein synthesis, which is essential for bacterial growth and replication. Specifically, it binds to the 50S subunit of the bacterial ribosome, preventing the elongation of the peptide chain during protein synthesis. This disrupts the production of essential proteins in the bacterial cell, ultimately leading to bacterial cell death and the resolution of the infection.
Dosage and Administration
The typical dosage of Erythro 500 for adults is 250 mg to 500 mg every 6 hours, or as directed by your physician, depending on the severity of the infection. The maximum daily dose should not exceed 4 grams. For pediatric patients, the dosage is based on body weight and should be determined by a healthcare professional. It’s important to take the medication at evenly spaced intervals to maintain a consistent level of the drug in the body.
Benefits
- Effective treatment for various bacterial infections
- Broad-spectrum antibiotic activity against gram-positive and some gram-negative bacteria
- Convenient oral tablet formulation
- Well-tolerated with a low incidence of serious side effects
- Can be used in both adults and children
Common Side Effects
Common side effects of Erythro 500 may include nausea, vomiting, diarrhea, stomach cramps, and abdominal discomfort. These side effects are usually mild and temporary, but if they persist or become severe, you should contact your healthcare provider for further guidance. In rare cases, Erythro 500 may cause more serious side effects such as allergic reactions or liver toxicity.
Warnings
Erythro 500 should be used with caution in patients with liver disease, as it may exacerbate existing liver conditions or cause liver toxicity. It may also interact with other medications, so be sure to inform your healthcare provider of all the medications you are currently taking, including prescription, over-the-counter, and herbal supplements. If you develop symptoms of an allergic reaction, such as rash, itching, swelling, or difficulty breathing, seek medical attention immediately.
Storage Information
Store Erythro 500 tablets at room temperature away from moisture and heat. Keep the medication out of reach of children and pets. Do not use Erythro 500 beyond the expiration date printed on the packaging.
Disclaimer:
Our sole intention is to ensure that its consumers get information that is expert-reviewed, accurate, and trustworthy. However, the information contained herein should NOT be used as a substitute for the advice of a qualified physician. The information provided here is for informational purposes only. This may not cover all possible side effects, drug interactions, or warnings or alerts. Please consult your doctor and discuss all your queries related to any disease or medicine. We intend to support, not replace, the doctor-patient relationship.
Frequently Asked Questions
Is Erythro 500 safe to take?
Erythro 500 is a macrolide. Common side effects are gastrointestinal — nausea, abdominal cramps, and diarrhoea (erythromycin is the most prokinetic in the class). Less common but serious: QT prolongation, ventricular arrhythmia signal, and rare cholestatic hepatitis (especially with the estolate salt).
Does Erythro 500 interact with other medicines?
Yes — erythromycin is a strong CYP3A4 inhibitor. Avoid combination with simvastatin, lovastatin, ergot alkaloids, pimozide, cisapride, and oral midazolam/triazolam. Warfarin INR can rise; digoxin levels can rise; theophylline levels can rise. Always tell your prescriber what else you take.
Should I take Erythro 500 with food?
Erythromycin base is best on an empty stomach (1 hour before or 2 hours after food) for maximal absorption. The estolate and ethylsuccinate salts can be taken with food to reduce nausea. Check your specific formulation.
Can I take Erythro 500 in pregnancy?
Erythromycin (base or ethylsuccinate) has the longest safety record in pregnancy among macrolides and is broadly considered acceptable. Erythromycin estolate is avoided in pregnancy due to a hepatotoxicity signal.
Does Erythro 500 prolong the QT interval?
Yes — all macrolides carry some QT-prolongation risk. Caution applies if you have known long-QT, take other QT-prolonging drugs, or have low potassium/magnesium.
How long does a course of Erythro 500 last?
Typical courses are 7–10 days for respiratory or skin infection. Streptococcal pharyngitis needs a full 10-day course to prevent rheumatic fever. Always complete the course even if symptoms resolve.
Other Anti-Infective Medications
- Cipmox — amoxicillin
- Clavam Dry Syrup — amoxicillin + clavulanate
- Cetil — cefuroxime
- Cefoprox — cefpodoxime
- Taxim-O DT — cefixime
More options in Antibiotics
Ranked by recent MedsBase order volume — what other customers in this category are picking.
| Strength | 500 mg |
|---|---|
| Quantity | 30 Tablet/s, 60 Tablet/s, 90 Tablet/s, 180 Tablet/s |
Erythro 500
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Erythro 500
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