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Erythromycin is classified as a macrolide antibiotic; it is a custom-made pharmacy drug prescribed by physicians for treatment of many diseases and conditions such as Legionnaires' disease, sexually transmitted diseases, whooping cough, urinary tract infections, acne, pneumonia and more. Erythromycin is sometimes prescribed for patients who have trouble moving substances through the intestines. Its effect is upon bacteria; erythromycin disables bacteria from creating proteins essential to their survival and growth.


Your compounding pharmacist can make erythromycin into many deliverable forms such as gels, creams, tablets, and injectable intravenous solutions. Dosage depends entirely on your condition, age, relative health, etc. Your doctor will advise you on dosage and usage, as well as the optimal method of delivery when he or she writes your prescription, which you can then take to your compounding pharmacy to be filled.


Side effects are possible with any drug and erythromycin use may initiate side effects in some patients. Common side effects seen with erythromycin are:

  • Dizziness
  • Rash
  • Itching

If you experience any side effects listed above, or other side effects not listed, that worsen, linger, or are concerning to you, contact your doctor.

Severe Side Effects:

If you experience, or suspect you may be having, any of the following severe side effects while taking erythromycin, seek medical treatment right away:

  • Inflammation of the Liver
  • Kidney Inflammation
  • Kidney Infection
  • Colon Inflammation
  • Confusion
  • Hallucinations
  • Hives
  • Abdominal Pain

NOTE: If you begin vomiting or begin to have gas or diarrhea, stop taking erythromycin at once and call your doctor.


There are many possible contraindications, restrictions, and other specific warnings that you must be aware of before taking erythromycin so consult with your doctor for a full overview of your condition, the pros and cons of erythromycin use, and a list of all contraindications, restrictions, etc. specific to you and your use of erythromycin.

WARNING: Talk to your doctor about all medications you are currently taking before beginning use of erythromycin. Some medications may interact with erythromycin and cause 'sudden death' if processed by your liver in a similar manner.

WARNING: Do not eat grapefruit, drink grapefruit juices or drinks, or consume any grapefruit based products while taking erythromycin as this could potentially cause a dramatic jump in erythromycin levels in your bloodstream that may be life threatening in some cases.

Do not take erythromycin if you are currently taking the following medications:

  • Mevacor
  • Orap
  • Zocor

Do not take erythromycin if you are taking any drugs that affect the electrical activities of the heart.

Consult first with your doctor before beginning a course of erythromycin if you are taking or have taken the drug, colchicine.

Do not take erythromycin if you have liver or heart conditions unless your doctor has been made aware and still thinks erythromycin is necessary for your treatment.

There are many other pharmacy drugs, street drugs, herbal drugs and supplements that may interact with erythromycin. Do not begin taking erythromycin unless you have consulted with your doctor and informed her or him about all the drugs and supplements, etc. you are taking.

  • "It is rare to find health professionals who are so willing to educate the patient on what they need to know."

    Clair C. | West Hollywood, CA