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Ery-Tab (Generic Erythromycin)

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Why is this medication prescribed?

Ery-Tab, which contains the antibiotic erythromycin, is prescribed to treat various bacterial infections caused by susceptible strains of bacteria. Some common conditions for which erythromycin may be prescribed include:

  • Respiratory infections: Erythromycin can be used to treat respiratory tract infections such as pneumonia, bronchitis, and pertussis (whooping cough).
  • Skin infections: It can be used to treat skin infections such as acne vulgaris, cellulitis, and erysipelas.
  • Sexually transmitted infections: Erythromycin may be prescribed to treat certain sexually transmitted infections like chlamydia and syphilis.
  • Ear and eye infections: It can also be used to treat ear infections (otitis media) and certain eye infections such as conjunctivitis.
  • Gastrointestinal infections: Erythromycin can be used to treat gastrointestinal infections caused by bacteria such as Helicobacter pylori.

How should this medicine be used?

Ery-Tab (Erythromycin) is typically used to treat bacterial infections, and the dosage and administration instructions may vary depending on the specific condition being treated, the severity of the infection, and individual patient factors such as age and weight. Here is a general overview of how Ery-Tab may be used:

  • Dosage: The dosage of Ery-Tab will be determined by the prescribing healthcare provider based on factors such as the type and severity of the infection, the patient’s age, weight, and overall health.
  • Administration: Ery-Tab tablets are usually taken by mouth with a full glass of water. The tablets should be swallowed whole and not chewed or crushed.
  • Timing: Ery-Tab is typically taken on an empty stomach, at least 1 hour before or 2 hours after meals, unless otherwise directed by the healthcare provider.
  • Frequency: The frequency of dosing will depend on the specific instructions provided by the healthcare provider. Ery-Tab is usually taken either two or four times daily, but this can vary depending on the condition being treated and the patient’s response to the medication.
  • Duration: It’s important to complete the full course of treatment prescribed by the healthcare provider, even if symptoms improve before the medication is finished. Failure to complete the full course of antibiotics can lead to the development of antibiotic-resistant bacteria.
  • Special Instructions: Patients should follow any special instructions provided by their healthcare provider or pharmacist. This may include avoiding certain foods, beverages, or medications that could interact with Ery-Tab.
  • Monitoring: Patients should be monitored by their healthcare provider during treatment to assess the response to the medication and watch for any potential side effects or complications.

It’s essential for patients to carefully follow the dosing and administration instructions provided by their healthcare provider or pharmacist. If there are any questions or concerns about how to use Ery-Tab, patients should consult their healthcare provider or pharmacist for guidance.

Other uses for this medicine

In addition to its primary use as an antibiotic, Ery-Tab may also be prescribed for other conditions such as:

  • Acne: Erythromycin is sometimes prescribed in topical form or orally to treat acne.
  • Gastroparesis: Erythromycin can sometimes be used to stimulate stomach contractions in people with gastroparesis (delayed stomach emptying).
  • Whooping Cough (Pertussis): Erythromycin may be used to treat whooping cough, particularly in infants and young children.

What special precautions should I follow?

Regarding special precautions for using Ery-Tab (Erythromycin), here are some important considerations:

  • Allergies: Inform your healthcare provider if you have a known allergy to erythromycin or any other macrolide antibiotics.
  • Drug interactions: Erythromycin can interact with various medications, including certain anticoagulants, antifungals, statins, and medications metabolized by the liver. Inform your healthcare provider about all medications, supplements, and herbal products you are taking before starting Ery-Tab.
  • Liver function: Erythromycin may affect liver function, particularly in individuals with pre-existing liver disease. Regular monitoring of liver function tests may be necessary during treatment.
  • Pregnancy and breastfeeding: Inform your healthcare provider if you are pregnant, planning to become pregnant, or breastfeeding. Erythromycin should be used with caution during pregnancy and breastfeeding, and the potential risks and benefits should be discussed with your healthcare provider.
  • GI effects: Erythromycin may cause gastrointestinal side effects such as nausea, vomiting, diarrhea, and abdominal pain. Taking the medication with food may help reduce these side effects.
  • Resistance: Overuse or misuse of erythromycin can lead to antibiotic resistance. It’s important to take the medication exactly as prescribed and to complete the full course of treatment, even if symptoms improve before the medication is finished.

Always follow your healthcare provider’s instructions and guidance when using Ery-Tab, and consult them if you have any questions or concerns about its use.

What special dietary instructions should I follow?

There are no specific dietary restrictions associated with Ery-Tab. However, it’s generally recommended to take the medication with a full glass of water and to avoid consuming large amounts of grapefruit juice, as it may interact with erythromycin and increase the risk of side effects.

What should I do if I forget a dose?

If you forget to take a dose of Ery-Tab, take it as soon as you remember, unless it is almost time for your next scheduled dose. In that case, skip the missed dose and continue with your regular dosing schedule. Do not take a double dose to make up for a missed one.

What side effects can this medication cause?

Ery-Tab (Erythromycin) can cause various side effects, although not everyone will experience them. Common side effects may include:

  • Gastrointestinal discomfort: This is one of the most common side effects and may include nausea, vomiting, diarrhea, abdominal pain, and gastrointestinal upset. Taking the medication with food may help alleviate these symptoms.
  • Allergic reactions: Some individuals may experience allergic reactions to erythromycin, which can range from mild skin rashes to more severe reactions such as anaphylaxis. Seek medical attention immediately if you experience symptoms such as rash, itching, swelling, dizziness, or difficulty breathing.
  • Liver problems: Erythromycin can occasionally cause liver toxicity, leading to symptoms such as yellowing of the skin or eyes (jaundice), dark urine, and abdominal pain. If you experience any signs of liver problems, contact your healthcare provider.
  • QT prolongation: Erythromycin can prolong the QT interval on an electrocardiogram (ECG), which may lead to irregular heart rhythms. This is more likely to occur in individuals with pre-existing heart conditions or those taking other medications that also prolong the QT interval.
  • Clostridium difficile-associated diarrhea: Erythromycin use may disrupt the normal balance of bacteria in the gastrointestinal tract, leading to the overgrowth of Clostridium difficile bacteria and causing diarrhea. This can range from mild to severe and may require medical treatment.
  • Skin reactions: Some individuals may experience skin reactions such as rash, itching, or hives while taking erythromycin.
  • Hearing loss: In rare cases, erythromycin may cause reversible hearing loss, particularly at high doses or with prolonged use.
  • Visual disturbances: Erythromycin may cause visual disturbances such as blurred vision or double vision.

It’s essential to report any side effects you experience while taking Ery-Tab to your healthcare provider. They can help determine whether the side effects are minor and temporary or if they indicate a more serious reaction that requires medical attention. If you experience severe or persistent side effects, seek medical help promptly.

What should I know about storage and disposal of this medication?

Storage and Disposal:


  • Store Ery-Tab tablets at room temperature, away from moisture, heat, and light. Avoid storing them in the bathroom.
  • Keep Ery-Tab out of reach of children and pets.
  • Do not use Ery-Tab if it has passed the expiration date printed on the packaging.


  • Dispose of any unused or expired Ery-Tab tablets properly according to local regulations or guidelines.
  • Do not flush Ery-Tab tablets down the toilet or pour them down the drain unless instructed to do so by a healthcare professional or pharmacist.
  • Consult your pharmacist or local waste disposal authority for information on how to safely dispose of medications.

In case of emergency/overdose

  • In case of an overdose of Ery-Tab, seek emergency medical attention or contact a poison control center immediately. Overdose symptoms may include nausea, vomiting, abdominal pain, diarrhea, and hearing loss.
  • If possible, bring the Ery-Tab packaging or container to the healthcare provider or emergency room to aid in treatment.

What other information should I know?

  • Keep all appointments with your healthcare provider while taking Ery-Tab. Your healthcare provider may need to monitor your progress and conduct tests to check for side effects or treatment efficacy.
  • Inform any other healthcare providers, including dentists and surgeons, that you are taking Ery-Tab before undergoing any medical procedures.
  • Follow your healthcare provider’s instructions regarding the duration of treatment with Ery-Tab. Do not stop taking the medication early even if you start feeling better, as this may lead to the recurrence of infection or antibiotic resistance.
  • If you develop severe or persistent side effects while taking Ery-Tab, contact your healthcare provider promptly.
  • Keep a list of all medications you are taking, including prescription and over-the-counter medications, as well as any supplements or herbal products, and share this list with your healthcare provider.
  • If you have any questions or concerns about Ery-Tab or its use, consult your healthcare provider or pharmacist for guidance.

By following these guidelines for storage, disposal, and emergency management, you can help ensure the safe and effective use of Ery-Tab while minimizing the risk of complications.

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