What is a Generic Drug?

A generic drug is a copy of the brand-name drug with the same dosage, safety, strength, quality, consumption method, performance, and intended use. Before generics become available on the market, the generic company must prove it has the same active ingredients as the brand-name drug and works in the same way and in the same amount of time in the body.

The only differences between generics and their brand-name counterparts is that generics are less expensive and may look slightly different (eg. different shape or color), as trademarks laws prevent a generic from looking exactly like the brand-name drug.

Generics are less expensive because generic manufacturers don't have to invest large sums of money to develop a drug. When the brand-name patent expires, generic companies can manufacture a copy of the brand-name and sell it at a substantial discount.

Erythrocin (Erythromycin)


Erythrocin (Erythromycin)

Prescription Required


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Generic Equivalent - Erythrocin (Erythromycin)

Prescription Required


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  • Product Details


    ERYTHROCIN (erythromycin) is a prescription medication that can treat a variety of infections. Some of the infections include:

    • Acute pelvic inflammatory disease
    • Dipthteria
    • Intestinal amebiasis
    • Legionnaires Disease
    • Lower respiratory infections
    • Pertussis
    • Sexually transmitted infections
    • Skin and skin structure infections
    • Upper respiratory infections

    You can buy ERYTHROCIN 250 mg tablet with a valid prescription from your doctor.

    EWRYTHROCIN works by preventing some bacteria from replicating. It binds to an essential protein in bacteria and stops it from making critical proteins.


    The standard dosage of ERYTHROCIN ranges from 250-500 mg between two to four times daily. The dosage will depend on the type of infection your doctor is trying to treat. Take ERYTHROCIN exactly as directed by your doctor.


    ERYTHROCIN has many potential drug-drug interactions. Tell your doctor about every medication you are taking before starting ERYTHROCIN.

    Some examples of frequent drug-drug interactions include: 

    • Antibiotics
    • Anticoagulant medications
    • Antineoplastic agents (chemotherapy)
    • Calcium channel blockers
    • Carbamazepine
    • Cilostazol
    • Cobicistat
    • Colchicine
    • Eplerenone
    • Everolimus
    • Fentanyl
    • Guanfacine
    • Ibrutinib
    • Lurasidone
    • Methadone
    • Sleep medications
    • Statin medications
    • Theophylline

    Fact Table




    AU, US FDA


    Depends on the ester type; between 30% and 65%

    Legal status

    RX Only

    Chemical Name


    Elimination half-life

    1.5 hours

    Dosage (Strength)

    250mg (100 tablets)


    Consult a doctor


    Aktipak, Apo-Erythro-S, Benzamycin, E.E.S., Ery, Ery-tab, Eryc, Erygel, Eryped, Erythro, Erythrocin, Erythrocin Stearate

    Protein binding


    PubChem CID






    ATC code

    A01AC03, A07EA02, C05AA01, D07AA0, H02AB09, S01BA02, S02BA01





    Routes of administration

    By mouth, intravenous (IV), intramuscular (IM), topical, eye drops


    Do not take ERYTHROCIN unless your doctor has confirmed an infection. It can cause severe gastrointestinal side effects. Taking it without infection can also lead to bacterial resistance.

    Tell your doctor if you have a history of liver problems.

    Tell your doctor if you have a history of heart problems.

    Side Effects

    The common side effects of ERYTHROCIN may include:

    • Abdominal pain
    • Anorexia
    • Convulsions
    • Diarrhea
    • Heart arrhythmias
    • Nausea
    • Pancreatitis
    • Symptoms of hepatitis
    • Vomiting

    The above is not a full list of side effects. Tell your doctor if you think you are experiencing adverse effects while taking ERYTHROCIN.


    1. Erythrocyn [Package insert].Atlanta, GA: Arbor Pharmaceuticals; 2003.

    IMPORTANT NOTE: The above information is intended to increase awareness of health information and does not suggest treatment or diagnosis. This information is not a substitute for individual medical attention and should not be construed to indicate that use of the drug is safe, appropriate, or effective for you. See your health care professional for medical advice and treatment.

    Product Code : 2748

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