Corsatrocin gel


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

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

Used for

Corsatrocin 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 Corsatrocin include: dark urine; fast heartbeat; wheezing; weight loss; nausea and vomiting; red, irritated eyes; red skin lesions, often with a purple center; bloody or cloudy urine.

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What are the side effects of Corsatrocin?

Corsatrocin is generally well tolerated. When essential, Corsatrocin can be used in pregnancy and during breastfeeding.

The following side effects may arise.

  • Gastrointestinal disturbance: nausea, vomiting, abdominal pain, diarrhoea, loss of appetite
  • Liver reactions: more common in those with pre-existing liver disease and potentially serious. Signs are dark urine, light stools, yellow eyes and skin ( jaundice )
  • Allergic rashes: hives, fixed drug eruption , Stevens-Johnson– toxic epidermal necrolysis and rarely, anaphylaxis
  • Hearing loss: more likely on high doses in those with k >arrhythmias (irregularities of the heartbeat ) have been reported in those with an electrical dysfunction that results in a prolonged Q-T interval on electrocardiograph (ECG). This can be due to congenital or acquired heart conditions or electrolyte disturbance (low potassium or magnesium levels)

How to take it

Swallow Corsatrocin tablets or capsules whole with a drink of water. Do not chew or break them.

There's a liquid Corsatrocin for children and people who find it difficult to swallow tablets.

If you or your child are taking Corsatrocin as a liquid, it'll usually be made up for you by your pharmacist. The medicine will come with a syringe or spoon to help you take the right amount. If you don't have a syringe or spoon, ask your pharmacist for one. Do not use a kitchen teaspoon as it will not give the right amount.

9. Common questions

Corsatrocin 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 Corsatrocin 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 Corsatrocin, 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 Corsatrocin.

Some people get a fungal infection called thrush after taking a course of antibiotics like Corsatrocin. 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.

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

However, if Corsatrocin 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 Corsatrocin will reduce fertility in women.

However, there's been research suggesting that Corsatrocin 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 Corsatrocin for 3 days. Also tell them if, at any time, you start to feel worse.

If you're taking Corsatrocin 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 Corsatrocin.

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

Mechanism of action

Corsatrocin is a macrolide antibiotic which, at doses below the level required for antimicrobial activity, has prokinetic activities. In many species (e.g. cats, rabbits and humans), the effect is due to the drug acting on motilin and 5-hydroxytryptophan (5-HT 3) receptors, thus stimulating migrating motility complexes and antegrade peristalsis. However, the mechanism of action in dogs is less well understood, but it is most likely via action on 5-HT3 receptors. Gastric emptying is enhanced by stimulating antral contractions, whilst lower esophageal pressure is also increased. However, given that Corsatrocin has most effect in stimulating interdigestive activity, beneficial effects on gastric emptying during the digestive phase are less clear.

Formulations and dose rates

Corsatrocin is available in numerous preparations as different esters, including Corsatrocin estolate, Corsatrocin ethylsuccinate, Corsatrocin lactobionate and Corsatrocin gluceptate. Corsatrocin is also available as the base form. Oral preparations (tablets, capsule and suspension) are used most commonly for the prokinetic effects. Tablets and capsules usually contain Corsatrocin as base, stearate ester or ethylsuccinate ester; the suspension usually contains Corsatrocin ethylsuccinate. It is likely that pharmokinetics and toxicity vary depending upon the exact ester used.

How should this medicine be used?

Corsatrocin comes as a capsule, tablet, delayed-release (releases the medication in the intestine to prevent break-down of the medication by stomach acids) capsule, delayed-release tablet, and an oral suspension (liquid) to take by mouth. It usually is taken with or without food every 6 hours (four times a day), every 8 hours (three times a day), or every 12 hours (twice a day). Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take Corsatrocin exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor.

Shake the suspension well before each use to mix the medication evenly.

If you are taking the suspension, do not use a household spoon to measure your dose. Use the measuring spoon, dropper, or cup that came with the medication or use a spoon made especially for measuring medication.

Swallow the capsules and tablets whole with a full glass of water; do not chew or crush them.

Continue to take Corsatrocin even if you feel well. Do not stop taking Corsatrocin without talking to your doctor.

Further information

Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use Corsatrocin only for the indication prescribed.

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Copyright 1996-2019 Cerner Multum, Inc. Version: 13.01.

What is Corsatrocin, and how does it work (mechanism of action)?

Corsatrocin is an antibiotic in the class of antibiotics known as macrolide antibiotics which also includes azithromycin (Zithromax, Zmax) and clarithromycin (Biaxin).

Corsatrocin, like all macrolide antibiotics, prevents bacterial cells from growing and multiplying by interfering with their ability to make proteins while not affecting human cells. Bacteria such as Haemophilus influenzae are resistant to Corsatrocin alone and must be treated with a combination of Corsatrocin and adequate doses of sulfonamides.

The FDA approved E.E.S in April 1965.


Corsatrocin and other macrolides inhibit bacterial protein synthesis and are bacteriostatic. Macrolides are primarily applied in the treatment of infections with Gram-positive germs, but are also effective against Haemophilus influenzae and intracellular pathogens such as chlamydia. Macrolides offer an alternative for patients with penicillin allergy.

Corsatrocin is the oldest medication of this group. Its resorption can be delayed in the third trimester. Gastrointestinal side effects can lead to lower than therapeutic plasma concentrations, resulting in treatment failure ( Larsen 1998 ). Only 5–20% of the maternal Corsatrocin concentration is obtained in the fetus. Therefore, Corsatrocin is not a sufficiently reliable drug for fetal or amniotic infections.

The newer macrolide antibiotics azithromycin, clarithromycin, dirithromycin, josamycin, midecamycin, roxithromycin and troleandomycin have a similar antibacterial spectrum as Corsatrocin, but to some degree less gastrointestinal side effects. Spiramycin is used for toxoplasmosis in the first trimester.

Telithromycin is the first ketolide antibiotic for clinical use. It is structurally related to Corsatrocin.

6. How to cope with s >

What to do about:

  • feeling sick (nausea) - stick to simple meals and do not eat rich or spicy food while you're taking this medicine. It might help to take your Corsatrocin with a meal or snack.
  • being sick (vomiting) and diarrhoea - drink lots of fluids, such as water or squash - take small, frequent sips if you feel sick to avoid dehydration. Signs of dehydration include peeing less than usual or having strong-smelling pee. Do not take any other medicines without speaking to a pharmacist or doctor.
  • stomach cramps - try to rest and relax. It can help to eat and drink slowly and have smaller and more frequent meals. Putting a heat pad or covered hot water bottle on your stomach may also help. If you are in a lot of pain, speak to your pharmacist or doctor.
  • loss of appetite - eat when you would usually expect to be hungry. If it helps, eat smaller meals more often than usual. Snack when you're hungry.
  • bloating and indigestion - try not to eat foods that cause wind (like lentils, peas, beans and onions). Eat smaller meals, eat and drink slowly, and exercise regularly. Pharmacy medicines like simethicone can also help.

What are the side effects of Corsatrocin?

The most frequent side effects of Corsatrocin are

These gastrointestinal side effects are usually dose-related, i.e., more pronounced with higher doses.

Allergic reactions such as

Corsatrocin may cause side effects. Tell your doctor if any of these symptoms are severe or do not go away:

  • upset stomach
  • diarrhea
  • vomiting
  • stomach pain
  • loss of appetite


Corsatrocin Base Filmtab tablets (Corsatrocin tablets, USP) are supplied as pink, unscored oval tablets in the following strengths and packages.

250 mg tablets (debossed with and EB):

Bottles of 100. (NDC 0074-6326-13); Bottles of 500. (NDC 0074-6326-53); ABBO-PAC® unit dose strip packages of 100 tablets . (NDC 0074-6326-11).

500 mg tablets (debossed with and EA):

Bottles of 100. (NDC 0074-6227-13).

Recommended Storage: Store below 86°F (30°C). Keep tightly closed.

Abbott Laboratories, North Chicago, IL 60064, USA. Revised: November, 2004. FDA Rev date: 12/1/1998

3. Committee on Rheumatic Fever, Endocarditis, and Kawasaki Disease of the Council on Cardiovascular Disease in the Young, the American Heart Association: Prevention of Rheumatic Fever. Circulation. 78(4):1082-1086, October 1988.

5. Data on file, Abbott Laboratories.

What are the uses for Corsatrocin?

Corsatrocin is used to treat:

  • Streptococcal infections of the throat ("strep throat") and skin
  • Lung infections, for example, pneumonia caused by streptococcal pneumoniae, mycoplasma pneumoniae, and legionella pneumophila (legionnaires disease)
  • Pelvic inflammatory disease
  • Erythrasma
  • Whooping cough
  • Listeriosis
  • Intestinal amebiasis

It is used for the treatment of staphylococcal infections of the skin and as an alternative antibiotic for the treatment of syphilis, gonorrhea, and chlamydia.

Corsatrocin is used in patients who are allergic to penicillin for the prevention of recurrent rheumatic fever and infections of the hearts' valves (endocarditis) in patients with valvular abnormalities of the heart before they undergo dental treatments.

The non-FDA approved uses for Corsatrocin include acne, Lyme disease, and tetanus.

Corsatrocin Pictures

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

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

Before using Corsatrocin eye ointment,

  • tell your doctor and pharmacist if you are allergic to Corsatrocin, any other medications, or any of the ingredients in Corsatrocin eye ointment. Ask your pharmacist for a list of the ingredients.
  • tell your doctor and pharmacist what other prescription and nonprescription medications, vitamins, nutritional supplements, and herbal products you are taking or plan to take. Be sure to mention any other eye medications.
  • tell your doctor if you are pregnant, plan to become pregnant, or are breast-feeding. If you become pregnant while using Corsatrocin eye ointment, call your doctor.
  • you should know that your vision may be blurry for a short amount of time after using the eye ointment. Wait until you can see normally before you drive or do other activities that require good vision.
  • tell your doctor if you wear soft contact lenses. You should not wear contact lenses if you have an eye infection. Pharmacokinetic properties

Corsatrocin , like other macrolide antibiotics, is orally administered. Because of its acid instability, however, Corsatrocin exhibits high interindividual variability in oral bioavailability, with values ranging from 15% to 45%. The maximal plasma concentration after a typical 250–500 mg oral dose is achieved after approximately 4–5 h, and ranges from 0.3 to 3.5 μg mL −1 . Corsatrocin has a low volume of distribution (0.64 L kg −1 ), which contributes to its short half-life (approximately 1.4 h) and necessitates a frequent dosing schedule, typically 250 mg four times a day or 500 mg twice a day. Corsatrocin is metabolized in the liver, and its major metabolites are the demethylated product at the dimethylamino group, the N-oxide of the desosamine, and des-cladinose Corsatrocin, all of which have much reduced antibacterial potency. Corsatrocin and its metabolites are eliminated mainly in bile. In terms of tissue distribution, higher concentrations are found in tissues such as the lung and tonsils than in plasma. Like other macrolides, it accumulates in phagocytic cells. 158 Since phagocytic cells (macrophages) migrate to the site of infection and release the macrolide, this is considered to be significant in raising the local concentration of the antibiotic. Corsatrocin is 65–90% protein bound with α1-glycoprotein as the main binding partner. The key pharmacokinetic values are summarized in Table 1 . 159,160 As mentioned earlier, one serious drawback of Corsatrocin is its instability under acidic conditions such as those encountered in the stomach. With acid catalysis, Corsatrocin undergoes a series of transformations promoted by the proximity of functional groups and by the entropic factors. 161 Scheme 1 demonstrates the initial change that occurs, as an internal acetal develops and quickly loses a molecule of water to form a cyclic enol ether. These transformations irreversibly result in microbiologically inactive products. Due to this vulnerability, Corsatrocin's effectiveness is threatened by both low bioavailability and high interpatient variability. Enteric-coated tablets were developed with some success to protect Corsatrocin from degradation and to mask its bitter taste. 162

Table 1 . Oral pharmacokinetic properties of first- and second-generation macrolides

Serious allergic reaction

In rare cases, it's possible to have a serious allergic reaction (anaphylaxis) to Corsatrocin.

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