Erythromycin Online

How and where to order Erythromycin 250 mg, 500 mg tablets or capsules online:

Prices:from $0.36 per pill
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Forms:250 mg, 500 mg tablets or capsules
Quantity:20-360 pills
Type:Erythromycin brand and generics
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Erythromycin (trade names include Ilosone, Aknemycin, Akne-Mycin, Apo-Erythro, E-Mycin, Eritromicina GSK, Eromycin, Eryacne, Eryc, Erycin, Eryhexal, Ery-Tab, Erythro CT-Arzneimittel, Erythroforte, Erythromycin Ratiopharm, Erythromycine Bailleul, Erythroped) is a broad-spectrum macrolide antibiotic from macrolides pharmacological group. This medication is used in therapy of many kinds of infections such as respiratory tract, skin, soft tissue, eye, ear, chlamydia infections, some sexually transmitted diseases, dental abscess, pneumonia, legionella pneumonia (Legionnaire's disease), mycoplasma pneumonia, bronchitis, pertussis, pharyngitis, strep throat, pelvic inflammatory disease, nongonococcal urethritis, syphilis, chancroid; Lyme disease, bartonellosis, pemphigoid, bullous pemphigoid, campylobacter gastroenteritis, lymphogranuloma venereum, ocular rosacea, otitis media, for bowel preparation, to prevent "strep" infections in patients with a history of rheumatic heart disease who may be allergic to penicillin; in patients during pregnancy to prevent Group B streptococcal infection in the newborn; for bacterial endocarditis prevention; for prophylaxis of rheumatic fever; to improve delayed stomach emptying; in veterinary medicine. Erythromycin also treats severe acne. The spectrum of responsible bacteria include Corynebacterium minutissimum, Haemophilus influenzae, Staphylococcus aureus, Streptococcus pyogenes. This medicine works by slowing the growth or sometimes killing sensitive bacteria by reducing the production of important proteins needed these bacteria for survive.

Ilosone (Erythromycin)

Related medications:

  • Amoxicillin (Amoxil)
  • Amoxicillin, Clavulanate (Augmentin)
  • Ampicillin (Principen)
  • Azelaic Acid (Azelex)
  • Azithromycin (Zithromax)
  • Chloramphenicol (Chloromycetin)
  • Ciprofloxacin (Cipro)
  • Clarithromycin (Biaxin)
  • Clindamycin (Cleocin)
  • Dirithromycin (Dynabac)
  • Doxycycline (Vibramycin)
  • Ethionamide (Trecator-SC)
  • Flurithromycin (Mizar)
  • Josamycin (Josalid)
  • Levofloxacin (Levaquin)
  • Midecamycin (Miotin)
  • Minocycline (Minocin)
  • Moxifloxacin (Avelox)
  • Norfloxacin (Noroxin)
  • Ofloxacin (Floxin, Ocuflox)
  • Oleandomycin (Landomycin)
  • Roxithromycin (Rulide)
  • Spiramycin (Rovamycin)
  • Telithromycin (Ketek)
  • Tetracycline (Sumycin)
  • Troleandomycin (Triocetin)

    Pharmacological and medical categories:

  • Acne treatment preparations
  • Anti-infectives
  • Antibacterials
  • Antibiotics
  • Eye anti-infectives and antiseptics
  • Macrolide antibiotics
  • Topical antibiotics
  • Veterinary, pet meds

    ATC codes:

  • D - Dermatologicals
  • D10 - Anti-acne preparations
  • D10A - Anti-acne preparations for topical use
  • D10AF - Antiinfectives for treatment of acne
  • D10AF02 - Erythromycin

  • J - Antiinfectives for systemic use
  • J01 - Antibacterials for systemic use
  • J01F - Macrolides, lincosamides and streptogramins
  • J01FA - Macrolides
  • J01FA01 - Erythromycin

  • S - Sensory organs
  • S01 - Ophthalmologicals
  • S01A - Antiinfectives
  • S01AA - Antibiotics
  • S01AA17 - Erythromycin

    ICD-10 codes:

  • Other bacterial intestinal infections - A04
  • Campylobacter enteritis - A04.5
  • Whooping cough - A37
  • Bartonellosis - A44
  • Other bacterial diseases, not elsewhere classified - A48
  • Bacterial infection of unspecified site - A49
  • Infections with a predominantly sexual mode of transmission - A50-A64
  • Early syphilis - A51
  • Chlamydial lymphogranuloma (venereum) - A55
  • Chancroid - A57
  • Legionnaires' disease - A48.1
  • Infections with a predominantly sexual mode of transmission - A50-A64
  • Other spirochetal infections - A69
  • Lyme disease - A69.2
  • Other diseases caused by chlamydiae - A70-A74
  • Suppurative and unspecified otitis media - H66
  • Acute rheumatic fever - I00-I02
  • Acute and subacute endocarditis - I33
  • Endocarditis, valve unspecified - I38
  • Endocarditis and heart valve disorders in diseases classified elsewhere - I39
  • Acute pharyngitis - J02
  • Streptococcal pharyngitis - J02.0
  • Influenza and pneumonia - J09-J18
  • Bacterial pneumonia, not elsewhere classified - J15
  • Pneumonia due to Mycoplasma pneumoniae - J15.7
  • Pneumonia, unspecified organism - J18
  • Acute bronchitis - J20
  • Bronchitis, not specified as acute or chronic - J40
  • Simple and mucopurulent chronic bronchitis - J41
  • Unspecified chronic bronchitis - J42
  • Diseases of pulp and periapical tissues - K04
  • Other diseases of stomach and duodenum - K31
  • Other specified diseases of stomach and duodenum - K31.8
  • Gastroparesis - K31.84
  • Pemphigoid - L12
  • Bullous pemphigoid - L12.0
  • Acne - L70
  • Rosacea - L71
  • Urethritis and urethral syndrome - N34
  • Other female pelvic inflammatory diseases - N73
  • Female pelvic inflammatory disease, unspecified - N73.9
  • Persons encountering health services for specific procedures and treatment, not carried out - Z53

    Indications and usage:

    To reduce the development of drug-resistant bacteria and maintain the effectiveness of erythromycin and other antibacterial drugs, erythromycin should be used only to treat or prevent infections that are proven or strongly suspected to be caused by susceptible bacteria. When culture and susceptibility information are available, they should be considered in selecting or modifying antibacterial therapy. In the absence of such data, local epidemiology and susceptibility patterns may contribute to the empiric selection of therapy. Erythromycin tablets are indicated in the treatment of infections caused by susceptible strains of the designated microorganisms in various infective diseases.

    Dosage and administration:

    In most patients, erythromycin tablets are well absorbed and may be dosed orally without regard to meals. However, optimal blood levels are obtained when either Erythromycin 250 mg or Erythromycin 500 mg tablets are given in the fasting state (at least 1/2 hour and preferably 2 hours before meals).


    The usual dosage of erythromycin is one 250 mg tablet every 8 hours or one 500 mg tablet every 12 hours. Dosage may be increased up to 4 g per day according to the severity of the infection. However, twice-a-day dosing is not recommended when doses larger than 1 g daily are administered.


    Age, weight, and severity of the infection are important factors in determining the proper dosage. The usual dosage is 30 to 50 mg/kg/day, in equally divided doses. For more severe infections this dosage may be doubled but should not exceed 4 g per day.

    In the treatment of streptococcal infections of the upper respiratory tract (e.g., tonsillitis or pharyngitis), the therapeutic dosage of erythromycin should be administered for at least ten days.

    The American Heart Association suggests a dosage of 250 mg of erythromycin orally, twice a day in long-term prophylaxis of streptococcal upper respiratory tract infections for the prevention of recurring attacks of rheumatic fever in patients allergic to penicillin and sulfonamides.

    Conjunctivitis of the newborn caused by Chlamydia trachomatis

    Oral erythromycin suspension 50 mg/kg/day in 4 divided doses for at least 2 weeks.

    Pneumonia of infancy caused by Chlamydia trachomatis

    Although the optimal duration of therapy has not been established, the recommended therapy is oral erythromycin suspension 50 mg/kg/day in 4 divided doses for at least 3 weeks. Urogenital Infections During Pregnancy Due to Chlamydia trachomatis Although the optimal dose and duration of therapy have not been established, the suggested treatment is 500 mg of erythromycin by mouth four times a day or two erythromycin 250 mg or 333 mg tablets orally every 8 hours on an empty stomach for at least 7 days. For women who cannot tolerate this regimen, a decreased dose of one erythromycin 500 mg tablet orally every 12 hours, one 333 mg tablet orally every 8 hours or 250 mg by mouth four times a day should be used for at least 14 days.

    For adults with uncomplicated urethral, endocervical, or rectal infections caused by Chlamydia trachomatis, when tetracycline is contraindicated or not tolerated 500 mg of erythromycin by mouth four times a day or two 333 mg tablets orally every 8 hours for at least 7 days.

    For patients with nongonococcal urethritis caused by Ureaplasma urealyticum when tetracycline is contraindicated or not tolerated 500 mg of erythromycin by mouth four times a day or two 333 mg tablets orally every 8 hours for at least seven days.

    Primary Syphilis

    30 to 40 g given in divided doses over a period of 10 to 15 days.

    Acute Pelvic Inflammatory Disease Caused by N. gonorrhoeae

    500 mg Erythrocin Lactobionate-I.V. (erythromycin lactobionate for injection, USP) every 6 hours for 3 days, followed by 500 mg of erythromycin base orally every 12 hours, or 333 mg of erythromycin base orally every 8 hours for 7 days.

    Intestinal Amebiasis


    500 mg every 12 hours, 333 mg every 8 hours or 250 mg every 6 hours for 10 to 14 days.


    30 to 50 mg/kg/day in divided doses for 10 to 14 days.


    Although optimal dosage and duration have not been established, doses of erythromycin utilized in reported clinical studies were 40 to 50 mg/kg/day, given in divided doses for 5 to 14 days.

    Legionnaires' Disease

    Although optimal dosage has not been established, doses utilized in reported clinical data were 1 to 4 g daily in divided doses.

    Dosage forms and strengths:

    Erythrocin tablets or capsules: 250 mg, 333 mg, 500 mg.


    In case of overdosage, erythromycin should be discontinued. Overdosage should be handled with the prompt elimination of unabsorbed drug and all other appropriate measures should be instituted. Erythromycin is not removed by peritoneal dialysis or hemodialysis.


    Erythromycin is contraindicated in patients with known hypersensitivity to this antibiotic. This medication is also contraindicated in patients taking terfenadine, astemizole, cisapride, pimozide, ergotamine or dihydroergotamine.

    Warnings and precautions:

  • Hepatotoxicity (patients with impaired hepatic function).
  • Syphilis in pregnancy.
  • Clostridium difficile associated diarrhea.
  • The absence of a proven or strongly suspected bacterial infection or a prophylactic indication.

    Side effects, adverse reactions:

    The most frequent side effects of oral erythromycin preparations are gastrointestinal and are dose-related. They include nausea, vomiting, abdominal pain, diarrhea and anorexia. Symptoms of hepatitis, hepatic dysfunction and/or abnormal liver function test results may occur.

    Onset of pseudomembranous colitis symptoms may occur during or after antibacterial treatment.

    Erythromycin has been associated with QT prolongation and ventricular arrhythmias, including ventricular tachycardia and torsades de pointes.

    Allergic reactions ranging from urticaria to anaphylaxis have occurred. Skin reactions ranging from mild eruptions to erythema multiforme, Stevens-Johnson syndrome, and toxic epidermal necrolysis have been reported rarely.

    There have been reports of interstitial nephritis coincident with erythromycin use.

    There have been rare reports of pancreatitis and convulsions.

    There have been isolated reports of reversible hearing loss occurring chiefly in patients with renal insufficiency and in patients receiving high doses of erythromycin.

    Drug interactions:

    Serious adverse reactions have been reported in patients taking erythromycin concomitantly with CYP3A4 substrates. These include colchicine toxicity with colchicine; rhabdomyolysis with simvastatin, lovastatin, and atorvastatin; and hypotension with calcium channel blockers metabolized by CYP3A4 (e.g., verapamil, amlodipine, diltiazem).

    There have been post-marketing reports of colchicine toxicity with concomitant use of erythromycin and colchicine. This interaction is potentially life-threatening, and may occur while using both drugs at their recommended doses.

    Rhabdomyolysis with or without renal impairment has been reported in seriously ill patients receiving erythromycin concomitantly with lovastatin. Therefore, patients receiving concomitant lovastatin and erythromycin should be carefully monitored for creatine kinase (CK) and serum transaminase levels.

    Information for patients:

    Patients should be counseled that antibacterial drugs including erythromycin should only be used to treat bacterial infections. They do not treat viral infections (e.g., the common cold). When erythromycin is prescribed to treat a bacterial infection, patients should be told that although it is common to feel better early in the course of therapy, the medication should be taken exactly as directed. Skipping doses or not completing the full course of therapy may decrease the effectiveness of the immediate treatment and increase the likelihood that bacteria will develop resistance and will not be treatable by PCE or other antibacterial drugs in the future.

    Diarrhea is a common problem caused by antibiotics which usually ends when the antibiotic is discontinued. Sometimes after starting treatment with antibiotics, patients can develop watery and bloody stools (with or without stomach cramps and fever) even as late as two or more months after having taken the last dose of the antibiotic. If this occurs, patients should contact their physician as soon as possible.

    Pregnancy categories:

  • A - Australia
  • B - United States (No evidence of risk in humans)

    Salts and other forms:

  • Erythromycin Base
  • Erythromycin Acistrate
  • Erythromycin Dihydrate
  • Erythromycin Estolate
  • Erythromycin Ethylcarbonate
  • Erythromycin Ethylsuccinate
  • Erythromycin Gluceptate
  • Erythromycin Lactobionate
  • Erythromycin Laurilsulfate
  • Erythromycin Phosphate
  • Erythromycin Propionate
  • Erythromycin Stearate
  • Erythromycin Stearate Laurilsulfate
  • Erythromycin Stinoprate
  • Erythromycin Thiocyanate
  • Erythromycin Thiocyanate Escine

    Synonyms, international and chemical names:

  • Eritomicina
  • Eritromicene
  • Eritromicin
  • Eritromicina
  • Eritromisin
  • Eritromizina
  • Erythromicin
  • Erythromycine
  • Erythromycinum
  • Erytromycin
  • Erytromycine
  • Erytromycyna
  • Erytromysiini

    Brands, generics, trade names:

  • Abboticin - Abbott
  • Acnederm - Pfizer
  • Acneryne - Galderma
  • Aknefug-EL - Dr. August Wolff Arzneimittel
  • Aknemycin - Boots, Hermal Kurt Herrmann
  • Akne-Mycin - Boots
  • Apo-Erythro - Apotex
  • Deripil - Galderma
  • E.E.S. - Abbott, Amdipharm, Arbor Pharmaceuticals, Pfizer, Zuellig Pharma
  • E-Mycin - Pfizer, Abbott, Alphapharm, Pacific Pharmaceuticals, Perrigo
  • Eritrocina - Abbott
  • Eritromed - Biocumed Laboratorio
  • Eritromicina - GlaxoSmithKline, Sanofi-Aventis
  • Eritrofarm - ICN Pharmaceuticals
  • Eromycin - Eli Lilly, Gulf Pharmaceutical Industries, Julphar
  • Ery - Recordati, Interdelta, Tedis
  • Ery-Max - AstraZeneca, Schwarz Pharma
  • Eryacne - Galderma, Emcure Pharmaceuticals, Lavipharm Group, Pacific Pharmaceuticals, Summit, U.S. Summit, Zuellig Pharma
  • Eryacnen - Galderma
  • Eryaknen - Galderma, AB-Consult Handels
  • Eryc - Pfizer, Faulding, Hospira, Mayne Pharma, Taro Pharmaceutical Industries, Teva, Warner Chilcott
  • Erycin - Cipla
  • Eryderm - Abbott, Zuellig Pharma
  • Eryfluid - Pierre Fabre
  • Eryhexal - Hexal
  • Eryped - Abbott, Arbor Pharmaceuticals
  • Ery-Tab - Abbott
  • Erythro - CT-Arzneimittel, Drug Houses of Australia
  • Erythro-Base - AA Pharma, Pro Doc
  • Erythroforte - Abbott
  • Erythromycin - Abbott, Merck, Nycomed, Pro Doc, Ratiopharm, Sandoz, Stada, Teva
  • Erythromycine - Bailleul Laboratoires, Merck, Mylan, Sterigen Laboratoires
  • Erythroped - Abbott
  • Erythrotrop - Teva
  • Gallimycin - Vetoquinol, A.P.A.
  • Ilosone - Eli Lilly
  • Iloticina - Eli Lilly, Derly, Medac Farmaceutica
  • Ilotycin - Eli Lilly, Aspen Pharmacare, Dista
  • Inderm - Sankyo, Dermapharm, Will-Pharma
  • InfectoMycin - Infectopharm Arzneimittel und Consilium
  • Loderm - Vinas
  • Oftalmolosa Cusi Erythromycin - Alcon, Summit
  • Sansacne - Galderma, Metro Drug Distribution
  • Stiemycin - Stiefel Laboratories, Allphar Services, Bipharma, David Sparks, Firma Popular, Zuellig Pharma

    APIs used in medicine in combinations with erythromycin:

  • Benzoyl Peroxide
  • Bromhexine
  • Colistimethate Sodium
  • Fluocinolone
  • Guaifenesin
  • Ichthammol
  • Isotretinoin
  • Sulfamethoxazole
  • Sulfisoxazole Acetyl
  • Tretinoin
  • Trimethoprim
  • Zinc Acetate
  • Zinc Sulfate

    Here is a list of popular medications containing erythromycin as a main active pharmaceutical ingredient; their trade names, forms, doses, companies - manufacturers, distributors, suppliers, researchers and developers:

    Trade name of the drug Pharmaceutical forms and doses Companies
  • Cream; Topical; Erythromycin 2%
  • Gel; Topical; Erythromycin 2%
  • Ointment; Topical; Erythromycin 2%
  • Solution; Topical; Erythromycin 2%
  • Boots
  • Almirall
  • Dow Pharmaceutical Sciences
  • Healthpoint
  • Hermal Kurt Herrmann
  • iNova Pharmaceuticals
  • Valeant Pharmaceuticals
  • Zuellig Pharma
  • Ery-Tab
  • Tablets, Delayed Release; Oral; Erythromycin 250 mg
  • Tablets, Delayed Release; Oral; Erythromycin 333 mg
  • Tablets, Delayed Release; Oral; Erythromycin 500 mg
  • Abbott
  • Arbor Pharmaceuticals
  • Ilosone
  • Capsules; Oral; Erythromycin Estolate 125 mg
  • Capsules; Oral; Erythromycin Estolate 250 mg
  • Drops; Oral; Erythromycin Estolate 100 mg / ml
  • Powder for Suspension; Oral; Erythromycin Estolate 125 mg / 5 ml
  • Suspension; Oral; Erythromycin Estolate 100 mg / ml
  • Suspension; Oral; Erythromycin Estolate 125 mg / 5 ml
  • Suspension; Oral; Erythromycin Estolate 250 mg / 5 ml
  • Syrup; Oral; Erythromycin Estolate 125 mg / 5 ml
  • Syrup; Oral; Erythromycin Estolate 250 mg / 5 ml
  • Tablets, Chewable; Oral; Erythromycin Estolate 125 mg
  • Tablets, Chewable; Oral; Erythromycin Estolate 250 mg
  • Tablets; Oral; Erythromycin Estolate 500 mg
  • Eli Lilly
  • Aspen
  • Cipa Laboratorio
  • Diethelm
  • Dista
  • DKSH
  • GlaxoSmithKline
  • ICN Pharmaceuticals
  • More Pharma Corporation
  • Valeant Pharmaceuticals
  • Yungjin Pharmaceutical
  • Zuellig Pharma

  • References:

  • Erythromycin main article on Wikipedia:
  • Erythromycin compound on PubChem:
  • Erythromycin Acistrate compound on PubChem:
  • Erythromycin Dihydrate compound on PubChem:
  • Erythromycin Estolate compound on PubChem:
  • Erythromycin Ethylcarbonate compound on PubChem:
  • Erythromycin Ethylsuccinate compound on PubChem:
  • Erythromycin Gluceptate compound on PubChem:
  • Erythromycin Lactobionate compound on PubChem:
  • Erythromycin Phosphate compound on PubChem:
  • Erythromycin Propionate compound on PubChem:
  • Erythromycin Stearate compound on PubChem:
  • Erythromycin Stinoprate compound on PubChem:
  • Erythromycin Thiocyanate compound on PubChem:
  • Erythromycin on DrugBank:
  • Erythromycin Estolate on DrugBank:
  • Erythromycin Ethylsuccinate on DrugBank:
  • Erythromycin Gluceptate on DrugBank:
  • Erythromycin Lactobionate on DrugBank:
  • Erythromycin Phosphate on DrugBank:
  • Erythromycin Stearate on DrugBank:
  • Erythromycin Thiocyanate on DrugBank:
  • Erythromycin FAQ on MedlinePlus (revised 09/15/2019):
  • Erythromycin Ophthalmic FAQ on MedlinePlus (revised 01/15/2017):
  • Erythromycin film-coated tablets drug label info on DailyMed (revised March 3, 2011):
  • Ery-Tab (Erythromycin) delayed-release tablets drug label info on DailyMed (revised December 4, 2018):
  • Ery-Ped (Erythromycin Ethylsuccinate) suspension drug label info on DailyMed (revised January 24, 2020):
  • Erythromycin containing drugs on
  • Erythromycin for sale on Pharma Doctor:
  • Erythromycin international drug names on
  • E.E.S. and Ery-Ped (Erythromycin Ethylsuccinate) film-coated tablets and powder for oral suspension official prescribing information from the U.S. FDA (revised January 2012):
  • PCE (Erythromycin) tablets official prescribing information from the U.S. FDA (revised 11/2010):
  • Erythrocin (Erythromycin) 250 mg and 500 mg tablets package information leaflet on (revised December 2017):
  • Erythromycin Amdipharm 250 mg tablets package information leaflet on HPRA (revised July 2017):

    Revised: April 2021

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