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Erythromycin is an antibiotic used to treat a variety of bacterial infections. It works by stopping the growth of bacteria. This antibiotic treats or prevents only bacterial infections.

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Erythromycin Information

Erythromycin Medication Information Leaflet

Common Use

Erythromycin is commonly used to treat a wide variety of bacterial infections such as respiratory tract infections, skin infections, and chlamydia.

Generic Ingredient

The generic compound for Erythromycin is erythromycin.


Erythromycin belongs to the macrolide antibiotic class of medications.

Clinical Use

Erythromycin is clinically used to treat infections caused by certain types of bacteria.

Spectrum Of Activity

Erythromycin has a broad spectrum of activity and is effective against many gram-positive and gram-negative bacteria, as well as some atypical bacteria.

Drug interaction

Erythromycin may interact with other medications such as warfarin, theophylline, and digoxin. It is important to consult a healthcare professional for advice on potential drug interactions.

Dosage and Directions

The dosage and directions for erythromycin should be determined by a healthcare professional based on the specific condition being treated. It is crucial to follow the prescribed dosage and administration instructions.

Contraindications and Precautions

Erythromycin is contraindicated in individuals with a known hypersensitivity to it or other macrolide antibiotics. Precautions should be taken when using erythromycin in patients with liver disease or myasthenia gravis.

Possible side effect

Common side effects of erythromycin may include nausea, vomiting, diarrhea, and abdominal pain. It is important to seek medical advice if these side effects are persistent or severe.

Missed dose and Overdose

If a dose of erythromycin is missed, it should be taken as soon as possible. In the case of an overdose, immediate medical attention is necessary.

Special Cases

Special care should be taken when administering erythromycin to pediatric patients, elderly individuals, and those with impaired liver function.

Known Non-standard Use

Erythromycin is sometimes used off-label for conditions such as gastroparesis and acne.

Patient Considerations

Patients with a history of heart rhythm disorders or QT prolongation should inform their healthcare provider before using erythromycin.

Possible Risks

Erythromycin may carry a risk of antibiotic resistance and overgrowth of non-susceptible organisms.

Breastfeeding and Pregnancy

Erythromycin may be used during pregnancy and breastfeeding if the benefits outweigh the potential risks. It is important to consult a healthcare professional before use.

Known Alternatives

Alternative antibiotics to erythromycin include azithromycin and clarithromycin. Consultation with a healthcare professional is important to determine the most suitable alternative.


Erythromycin should be stored at room temperature in a tightly closed container, away from moisture and light.

Erythromycin FAQ

What is Erythromycin used for?

Erythromycin is an antibiotic commonly used to treat bacterial infections such as respiratory tract infections, skin infections, and chlamydia.

Is Erythromycin suitable for children?

Erythromycin can be prescribed to children, but the dosage and form of the medication may vary depending on the child's age and weight. It's essential to follow the doctor's instructions when giving Erythromycin to children.

Can Erythromycin be taken with food?

Erythromycin can be taken with or without food, but it is generally recommended to take it on an empty stomach for better absorption. However, if it upsets your stomach, you can take it with food.

What are the common side effects of Erythromycin?

Common side effects of Erythromycin include nausea, vomiting, diarrhea, abdominal pain, and skin rashes. If any of these side effects persist or worsen, it's important to consult a healthcare professional.

Can Erythromycin be used during pregnancy?

Erythromycin is generally considered safe to use during pregnancy, but it's essential to consult a healthcare professional before taking any medication while pregnant.

How long does it take for Erythromycin to work?

The time it takes for Erythromycin to work depends on the type and severity of the infection. In some cases, improvement can be seen within a few days, but it's important to complete the full course of medication as prescribed.

Can Erythromycin cause allergic reactions?

Yes, Erythromycin can cause allergic reactions in some individuals. It's important to seek medical attention if you experience symptoms such as rash, itching, swelling, dizziness, or trouble breathing after taking Erythromycin.

Is it safe to drive while taking Erythromycin?

Erythromycin may cause dizziness or drowsiness as side effects. If you experience these effects, it's advisable to avoid driving or operating heavy machinery until you know how the medication affects you.

What should I do if I miss a dose of Erythromycin?

If you miss a dose of Erythromycin, take it as soon as you remember. However, if it's almost time for your next dose, skip the missed dose and continue with your regular dosing schedule. Do not double the dose to catch up.

Can Erythromycin be used to treat acne?

Erythromycin is sometimes prescribed to treat acne, particularly in topical form. It works by inhibiting the growth of acne-causing bacteria on the skin.

Is it safe to consume alcohol while taking Erythromycin?

It's generally recommended to avoid consuming alcohol while taking Erythromycin as it can increase the risk of certain side effects, such as stomach upset or liver problems.

Can Erythromycin interact with other medications or supplements?

Erythromycin may interact with other medications, including some blood thinners, anti-seizure drugs, and certain cholesterol-lowering medications. It's important to inform your healthcare professional about all the medications and supplements you are taking.

How should Erythromycin be stored?

Erythromycin should be stored at room temperature away from light and moisture. It's important to keep it out of the reach of children and pets, and to properly dispose of any expired medication.

Can Erythromycin be used to treat ear infections?

Erythromycin may be used to treat certain types of ear infections, but the treatment approach and choice of antibiotic depend on the specific diagnosis. It's essential to consult a healthcare professional for proper evaluation and treatment.

Can Erythromycin cause stomach upset?

Yes, Erythromycin can sometimes cause stomach upset as a side effect. If this occurs, taking the medication with food may help alleviate the discomfort.

Erythromycin Properties

  • Clinical use: Anti-infective therapy
  • Spectrum of activity: Broad-spectrum, especially effective against Gram-positive bacteria
  • Mechanism of action: Binds to the 50S ribosomal subunit, preventing peptide chain elongation
  • Classification: Macrolide
  • Recommended Dosage: 250-500 mg every 6-12 hours
  • Basic Side Effects: Diarrhea, Nausea, Vomiting, Abdominal pain
  • Serious Side Effects: Hepatic dysfunction, QT prolongation, Reversible hearing loss, Cardiac arrest

Erythromycin Drug Class

Erythromycin Other/Alternative Names

Erythrocin Erythra-Derm Others

Erythromycin Related Medications

  • Azithromycin by Pfizer

Erythromycin Related Tretaments

Erythromycin Resources

Erythromycin Reviews

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