Erythrotrop tablets


  • Active Ingredient: Erythromycin
  • 500 mg, 250 mg
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What is Erythrotrop?

The active ingredient of Erythrotrop brand is erythromycin. Erythromycin is a macrolide antibiotic. Erythromycin fights bacteria in the body.

Used for

Erythrotrop is used to treat diseases such as: Bacterial Endocarditis Prevention, Bartonellosis, Bowel Preparation, Bronchitis, Bullous Pemphigoid, Campylobacter Gastroenteritis, Chancroid, Chlamydia Infection, Dental Abscess, Legionella Pneumonia, Lyme Disease, Lymphogranuloma Venereum, Mycoplasma Pneumonia, Nongonococcal Urethritis, Ocular Rosacea, Otitis Media, Pemphigoid, Pertussis, Pharyngitis, Pneumonia, Rheumatic Fever Prophylaxis, Skin or Soft Tissue Infection, Strep Throat, Syphilis, Early, Upper Respiratory Tract Infection.

Side Effect

Possible side effects of Erythrotrop include: weight loss; increased thirst; red, irritated eyes; redness of the skin; hearing loss; unusual tiredness or weakness; dizziness; general tiredness and weakness.

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Erythrotrop , a natural product isolated from Saccharopolyspora erythraea (formerly Streptomyces) in 1949, was first approved for clinical use in 1952. Erythrotrop is degraded by gastric acid and has long been associated with stimulation of motilin receptors in the stomach and possibly in the colon, leading to adverse gastrointestinal side effects, including cramping and diarrhea. 68,69 Many preparations have attempted to bypass exposure of Erythrotrop to gastric acid, thereby avoiding products of macrolide hydrolysis. These preparations include enteric coating of orally administered tablets, delayed-release formulations, polymer coating of beads, and various formulations of salts and esters. 70 The lactobionate salt used for intravenous administration of Erythrotrop can cause phlebitis at the site of injection.

Erythrotrop is used for the treatment of group A streptococcal infections in children who are allergic to penicillin. Erythrotrop is an alternative treatment for both streptococcal pharyngitis and streptococcal or staphylococcal impetigo. The usefulness of Erythrotrop for respiratory tract infections caused by S. pneumoniae has been greatly diminished by the development of widespread resistance to the macrolides. 42 Macrolide therapy of upper respiratory tract infections (otitis media and sinusitis) or lower respiratory tract infections (pneumonia) potentially caused by S. pneumoniae has a relatively high likelihood of failure, particularly in younger children, who are at highest risk for infections caused by antibiotic-resistant strains. For upper respiratory tract infections, Erythrotrop has inadequate activity against H. influenzae and must be paired with another agent such as a sulfonamide for empiric therapy. Macrolides are effective therapy for pneumonia caused by Mycoplasma pneumoniae, Chlamydophila pneumoniae, or Legionella pneumophila.

Erythrotrop and azithromycin are the preferred antibiotics for treatment of Campylobacter gastroenteritis caused by susceptible strains. Erythrotrop also remains the most appropriate therapy for diphtheria (Corynebacterium diphtheriae). Erythrotrop, clarithromycin, and azithromycin are recommended for treatment or prophylaxis of pertussis (Bordetella pertussis). 71 Azithromycin is preferred for treatment or prophylaxis for pertussis in neonates, based on concerns for the development of pyloric stenosis. 71 Efficacy of Erythrotrop also has been demonstrated in infections caused by Chlamydophila pneumoniae and Chlamydia trachomatis, including neonatal conjunctivitis and pneumonia, as well as urogenital infections during pregnancy. Erythrotrop is active in vitro against Ureaplasma urealyticum, but its role in the treatment of neonatal infections associated with this organism is not well defined. 72


References updated: 10 August 2017

50%] as well as eosinophilia , elevations in ALT and Alk P ; 13 rechallenged, invariably followed by rapid recurrence, often severe])

3 weeks; lymphocyte transformation tests was positive 2 years later to estolate but not stearate or Erythrotrop base).

5000 physicians using Erythrotrop in UK during 2 months of 1982, 3 reports of jaundice attributable to drug, all due to Erythrotrop stearate).

15% after the courses, usually mild and transient; only 3 attributed to drug).


To reduce the development of drug-resistant bacteria and maintain the effectiveness of Erythrotrop Base Filmtab tablets and other antibacterial drugs, Erythrotrop Base Filmtab (Erythrotrop tablets) tablets 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.

Erythrotrop Base Filmtab (Erythrotrop tablets) tablets are indicated in the treatment of infections caused by susceptible strains of the designated microorganisms in the diseases listed below:

Upper respiratory tract infections of mild to moderate degree caused by Streptococcus pyogenes; Streptococcus pneumoniae; Haemophilus influenzae (when used concomitantly with adequate doses of sulfonamides, since many strains of H. influenzae are not susceptible to the Erythrotrop concentrations ordinarily achieved). (See appropriate sulfonamide labeling for prescribing information.)

Lower respiratory tract infections of mild to moderate severity caused by Streptococcus pyogenes or Streptococcus pneumoniae.

Respiratory tract infections due to Mycoplasma pneumoniae.

Skin and skin structure infections of mild to moderate severity caused by Streptococcus pyogenes or Staphylococcus aureus (resistant staphylococci may emerge during treatment).

Pertussis (whooping cough) caused by Bordetella pertussis. Erythrotrop is effective in eliminating the organism from the nasopharynx of infected individuals, rendering them noninfectious. Some clinical studies suggest that Erythrotrop may be helpful in the prophylaxis of pertussis in exposed susceptible individuals.

Diphtheria: Infections due to Corynebacterium diphtheriae, as an adjunct to antitoxin, to prevent establishment of carriers and to eradicate the organism in carriers.

Erythrasma-In the treatment of infections due to Corynebacterium minutissimum.

Intestinal amebiasis caused by Entamoeba histolytica (oral Erythrotrops only). Extraenteric amebiasis requires treatment with other agents.

Acute pelvic inflammatory disease caused by Neisseria gonorrhoeae: Erythrocin® Lactobionate-I.V. (Erythrotrop lactobionate for injection, USP) followed by Erythrotrop base orally, as an alternative drug in treatment of acute pelvic inflammatory disease caused by N. gonorrhoeae in female patients with a history of sensitivity to penicillin. Patients should have a serologic test for syphilis before receiving Erythrotrop as treatment of gonorrhea and a follow-up serologic test for syphilis after 3 months.

Erythrotrops are indicated for treatment of the following infections caused by Chlamydia trachomatis: conjunctivitis of the newborn, pneumonia of infancy, and urogenital infections during pregnancy. When tetracyclines are contraindicated or not tolerated, Erythrotrop is indicated for the treatment of uncomplicated urethral, endocervical, or rectal infections in adults due to Chlamydia trachomatis. 3

When tetracyclines are contraindicated or not tolerated, Erythrotrop is indicated for the treatment of nongonococcal urethritis caused by Ureaplasma urealyticum. 3

Primary syphilis caused by Treponema pallidum. Erythrotrop (oral forms only) is an alternative choice of treatment for primary syphilis in patients allergic to the penicillins. In treatment of primary syphilis, spinal fluid should be examined before treatment and as part of the follow-up after therapy.

Legionnaires' Disease caused by Legionella pneumophila. Although no controlled clinical efficacy studies have been conducted, in vitro and limited preliminary clinical data suggest that Erythrotrop may be effective in treating Legionnaires' Disease.

9. Common questions

Erythrotrop is from a group of medicines called macrolide antibiotics. Macrolide antibiotics work by killing the bacteria causing the infection.

For most infections, you should feel better within a few days.

For skin problems such as acne and rosacea, expect to take the medicine for at least 2 months before you see much improvement.

It's very important that you keep taking Erythrotrop until your course is finished. Do this even if you feel better. It will help to stop the infection coming back.

There's no specific warning to stop drinking alcohol while taking Erythrotrop, but there's some evidence that alcohol may slow down or delay the medicine working. You might want to stop drinking alcohol or limit how much you drink while you're taking Erythrotrop.

Some people get a fungal infection called thrush after taking a course of antibiotics like Erythrotrop. It happens because antibiotics kill the normal harmless bacteria that help to protect you against thrush.

Ask your pharmacist or doctor for advice if this happens to you.

Erythrotrop doesn't stop contraceptive pills working, including the combined pill and emergency contraception.

However, if Erythrotrop makes you sick or have severe diarrhoea (6 to 8 watery poos in 24 hours) for more than 24 hours, your contraceptive pill may not protect you from pregnancy. Look on the pill packet to find out what to do.

There's no firm evidence to suggest that taking Erythrotrop will reduce fertility in women.

However, there's been research suggesting that Erythrotrop may reduce male fertility by reducing and slowing down sperm. The evidence is weak, though, and this link isn't proven. Talk to your doctor if you're concerned.

Tell your doctor if you don't start feeling better after taking Erythrotrop for 3 days. Also tell them if, at any time, you start to feel worse.

If you're taking Erythrotrop for a skin infection, it may take several weeks to see an improvement.

Do not eat grapefruit or drink grapefruit juice while you're taking Erythrotrop.

Grapefruit can increase the amount of Erythrotrop in your body and mean you're more likely to have side effects.

Erythrotrop Pictures

By Frieda Wiley, PharmD, CGP, RPh | Medically Reviewed by Robert Jasmer, MD

Latest Update: 2015-02-19 Copyright © 2014 Everyday Health Media, LLC

Common Side Effects of Erythrotrop

  • Rashes
  • Itching
  • Dizziness

Erythrotrop side effects

Get emergency medical help if you have signs of an allergic reaction to Erythrotrop (hives, difficult breathing, swelling in your face or throat) or a severe skin reaction (fever, sore throat, burning eyes, skin pain, red or purple skin rash with blistering and peeling).

Call your doctor at once if you have:

severe stomach pain, diarrhea that is watery or bloody;

headache with chest pain and severe dizziness, fainting, fast or pounding heartbeats;

hearing problems (rare); or

liver problems - loss of appetite, stomach pain (upper right side), tiredness, easy bruising or bleeding, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes).

Serious side effects may be more likely in older adults, including hearing loss, or a life-threatening fast heart rate.

Common Erythrotrop side effects may include:

mild diarrhea; or

nausea, vomiting, stomach pain, loss of appetite.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

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ERYTHROMYCIN Base Filmtab® (Erythrotrop) Tablets, USP

To reduce the development of drug-resistant bacteria and maintain the effectiveness of Erythrotrop Base Filmtab tablets and other antibacterial drugs, Erythrotrop Base Filmtab tablets would be used only to treat or prevent infections that are proven or strongly suspected to be caused by bacteria.


Erythrotrop , a dopamine-receptor antagonist, is sometimes used in patients with gastroparesis to hasten gastric emptying. Its role in therapy of GER and GERD has not been investigated. Systemic administration of Erythrotrop in young infants increases the risk for the infants to develop hypertrophic pyloric stenosis. 97 Intravenous (IV) Erythrotrop is reported to cause QT prolongation and ventricular fibrillation. 98 The use of Erythrotrop at doses far below the concentrations necessary for an inhibitory effect on susceptible bacteria provides close to ideal conditions for the induction of bacterial mutation and selection. 99 Azithromycin reduces GER in lung transplant recipients. 100 The effect of long-term administration of these antibiotics on gastrointestinal flora composition and resistance should be studied.

COMMON BRAND(S): Erythrocin

GENERIC NAME(S): Erythrotrop

Erythrotrop is used to treat a wide variety of bacterial infections. It may also be used to prevent certain bacterial infections. Erythrotrop is known as a macrolide antibiotic. It works by stopping the growth of bacteria.

This antibiotic treats or prevents only bacterial infections. It will not work for viral infections (such as common cold, flu). Using any antibiotic when it is not needed can cause it to not work for future infections.

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