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Eromac125 mg/5 ml

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Erythromycin

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Medicine overview

Indications of Eromac 125 mg/5 ml

Eromac 125 mg/5 ml is effective against a wide variety of bacterial infections, including:

Upper Respiratory Tract Infections

  • Tonsillitis and peritonsillar abscess
  • Pharyngitis and laryngitis
  • Sinusitis
  • Secondary bacterial infections following colds and influenza

Lower Respiratory Tract Infections

  • Tracheitis
  • Acute and chronic bronchitis
  • Community-acquired pneumonia, including atypical pneumonia caused by Mycoplasma pneumoniae and Legionella pneumophila

Ear Infections

  • Otitis media
  • Otitis externa
  • Mastoiditis

Eye Infections

  • Blepharitis
  • Established trachoma

Skin and Soft Tissue Infections

  • Boils and carbuncles
  • Impetigo
  • Abscesses
  • Pustular acne
  • Paronychia
  • Cellulitis and erysipelas

Gastrointestinal Infections

  • Cholecystitis
  • Staphylococcal enterocolitis

Prophylactic Use

  • Pre- and post-operative infection prevention
  • Prevention of infection following trauma or burns
  • Prevention of recurrent rheumatic fever

Other Infections

  • Osteomyelitis
  • Diphtheria (as an adjunct to antitoxin)
  • Scarlet fever
  • Whooping cough (pertussis)
  • Nongonococcal urethritis and chlamydial genital infections, including during pregnancy when tetracyclines are contraindicated

Always take Eromac 125 mg/5 ml exactly as prescribed by a registered physician. Self-medication with antibiotics can lead to treatment failure and antibiotic resistance.

Composition

Eromac 125 mg/5 ml belongs to the macrolide group of antibiotics and is derived from the bacterium Streptomyces erythreus. Depending on the formulation, it is supplied as Eromac 125 mg/5 ml stearate, Eromac 125 mg/5 ml ethylsuccinate, or Eromac 125 mg/5 ml base, all of which deliver the same active antibacterial compound once absorbed.

It produces a bacteriostatic effect at usual doses (stopping bacterial growth) and can become bactericidal (killing bacteria) at higher concentrations, by specifically interfering with protein synthesis inside the bacterial cell. Eromac 125 mg/5 ml is particularly useful for treating infections caused by penicillinase-producing staphylococci and is often prescribed as a penicillin alternative in patients with penicillin allergy.

Organisms Susceptible to Eromac 125 mg/5 ml

  • Gram-positive bacteria: Most cocci and bacilli, including many strains of Staphylococcus and Streptococcus
  • Gram-negative bacteria: Neisseria catarrhalis, Neisseria meningitidis, Neisseria gonorrhoeae, Haemophilus influenzae, Bordetella pertussis
  • Other organisms: Mycoplasma pneumoniae, Legionella pneumophila, Bacteroides fragilis, Bacteroides oralis, Bacteroides melaninogenicus, Fusobacterium species, Chlamydia trachomatis, and Treponema pallidum

Theropeutic Class

Topical antibiotics for Acne

Pharmacology

Eromac 125 mg/5 ml inhibits microsomal protein synthesis in susceptible bacteria by blocking the translocation step of protein assembly. It binds specifically to the 50S ribosomal subunit (or the 70S ribosome in susceptible organisms) without attaching to the human body's own 80S ribosomes, which is why it can disrupt bacterial growth while sparing human cells. This selective action makes Eromac 125 mg/5 ml effective against many gram-positive bacteria, several gram-negative organisms, and atypical pathogens such as Mycoplasma and Chlamydia.

Pharmacokinetics

Parameter Details
Absorption Eromac 125 mg/5 ml base is destroyed by stomach acid, so it is formulated as an acid-resistant ester (such as stearate or ethylsuccinate). Absorption is reduced when taken with food, so it is usually best taken on an empty stomach unless GI upset occurs.
Peak Serum Concentration Following a 500 mg oral dose of the stearate salt, peak serum levels of approximately 0.4–1.8 mcg/mL are reached within 1 to 4 hours.
Half-life 1.2 to 4 hours in patients with normal kidney function; extended to roughly 5 hours in patients with significantly reduced urine output (oliguria).
Distribution Widely distributed throughout body tissues and fluids, with notable retention in the liver and spleen. Roughly 73% is bound to plasma proteins. It crosses into inflamed cerebrospinal fluid, crosses the placenta, and is excreted into breast milk.
Metabolism Partially metabolized in the liver via the CYP3A4 enzyme pathway, which is the basis for several clinically important drug interactions.
Excretion About 5–15% of the dose is excreted unchanged in urine; the majority of active drug is excreted in the bile and eliminated in feces.

Dosage & Administration of Eromac 125 mg/5 ml

The dose of Eromac 125 mg/5 ml depends on the patient's age, body weight, and the severity of the infection being treated. The following is a general dosing guide — always follow the exact dose prescribed by a registered physician.

Age Group Recommended Dosage
Adults and children over 8 years 250–500 mg every 6 hours for mild to moderate infections. In severe infections, the dose may be increased up to 4 g or more per day, in divided doses.
Elderly patients No special dose adjustment is generally needed. May be given twice or three times daily by dividing the total daily dose into half (12-hourly) or one-third (8-hourly) portions.
Children aged 2–8 years 250 mg every 6 hours, or 30–50 mg/kg body weight per day divided into 4 equal doses.
Infants and children up to 2 years 500 mg per day in divided doses, or 30–50 mg/kg body weight per day in divided doses.

Administration Tips

  • For best absorption, take Eromac 125 mg/5 ml on an empty stomach, at least 1 hour before or 2 hours after meals, unless your doctor advises otherwise.
  • If stomach upset occurs, it may be taken with a small amount of food to improve tolerability, though absorption may be slightly reduced.
  • Swallow tablets whole with a full glass of water; do not crush or chew unless the formulation is specifically designed for that purpose.
  • Complete the full course of treatment as prescribed, even if symptoms improve early, to prevent antibiotic resistance and relapse of infection.
  • Try to take each dose at evenly spaced intervals to maintain a consistent level of the drug in the body.

Missed Dose

If a dose is missed, take it as soon as remembered. However, if it is almost time for the next scheduled dose, skip the missed dose and continue with the regular dosing schedule. Do not take a double dose to make up for a missed one.

Interaction of Eromac 125 mg/5 ml

Eromac 125 mg/5 ml inhibits the liver enzyme CYP3A4, which can raise the blood levels of several other medications. Inform your doctor about all medicines you are taking before starting Eromac 125 mg/5 ml.

Theophylline

In patients receiving high doses of theophylline, concurrent use of Eromac 125 mg/5 ml can raise serum theophylline levels and increase the risk of theophylline toxicity. The theophylline dose may need to be reduced under medical supervision.

Other Clinically Significant Interactions

  • Statins (e.g., lovastatin, simvastatin): Increased risk of muscle toxicity, including rhabdomyolysis, due to elevated statin levels.
  • Warfarin: May enhance the anticoagulant effect, increasing bleeding risk; closer INR monitoring is advised.
  • Digoxin: Eromac 125 mg/5 ml can increase digoxin blood levels in some patients, raising the risk of digoxin toxicity.
  • Carbamazepine, cyclosporine, tacrolimus: Eromac 125 mg/5 ml can raise blood levels of these drugs, requiring dose monitoring.
  • Ergot alkaloids (ergotamine, dihydroergotamine): Risk of acute ergot toxicity (ergotism), including severe peripheral vasospasm; co-administration should generally be avoided.
  • Cisapride, pimozide, astemizole, terfenadine: Co-administration is contraindicated due to a significantly increased risk of serious heart rhythm disturbances (QT prolongation).
  • Triazolam and midazolam: Eromac 125 mg/5 ml may decrease the clearance of these benzodiazepines, increasing their sedative effect.
  • Sildenafil: Eromac 125 mg/5 ml can increase sildenafil exposure; a lower sildenafil dose may be considered.
  • Hormonal contraceptives: May theoretically reduce the effectiveness of oral contraceptives; an additional contraceptive method is often recommended during treatment.

Contraindications

Eromac 125 mg/5 ml is contraindicated in patients with known hypersensitivity to Eromac 125 mg/5 ml or other macrolide antibiotics. It should also not be used together with cisapride, pimozide, astemizole, or terfenadine due to the risk of serious cardiac arrhythmias, or with ergot alkaloids due to the risk of ergotism.

Side Effects of Eromac 125 mg/5 ml

Most people tolerate Eromac 125 mg/5 ml well, but like all antibiotics, it can cause side effects in some patients.

Frequency Side Effects
Common Abdominal discomfort or cramping, nausea, vomiting, diarrhea. These gastrointestinal effects usually subside on their own after a few days without needing to stop treatment.
Less Common Mild allergic skin reactions such as rash or urticaria (hives).
Rare but Serious Anaphylaxis (severe allergic reaction), reversible hearing loss (typically with high-dose or prolonged therapy), cholestatic jaundice (more often linked with the estolate salt), QT interval prolongation and irregular heartbeat, and pseudomembranous colitis (antibiotic-associated diarrhea due to Clostridioides difficile overgrowth).

Seek prompt medical attention if you experience difficulty breathing, swelling of the face or throat, severe or persistent diarrhea, yellowing of the skin or eyes, or an irregular heartbeat while taking Eromac 125 mg/5 ml.

Pregnancy & Lactation

Clinical and laboratory studies have shown no evidence of teratogenicity (birth defects) or toxicity to the developing fetus in humans. However, caution should still be exercised when prescribing Eromac 125 mg/5 ml to pregnant or breastfeeding women, since the drug crosses the placental barrier and is excreted in breast milk.

Eromac 125 mg/5 ml is sometimes specifically prescribed during pregnancy for chlamydial genital infections when tetracycline-class antibiotics are contraindicated. As with any medication during pregnancy or while breastfeeding, use should only be under the guidance of a qualified physician, who will weigh the benefits against any potential risks.

Precautions & Warnings

  • Eromac 125 mg/5 ml should be used with care in patients with impaired liver (hepatic) function, since it is excreted principally through the bile. Liver function may need to be monitored during prolonged therapy.
  • Use cautiously in patients with myasthenia gravis, as macrolide antibiotics can occasionally worsen neuromuscular symptoms.
  • High-dose or prolonged use, particularly in patients with kidney or liver impairment, has been associated with reversible hearing loss; report any ringing in the ears or hearing changes to your doctor.
  • Infants under 2 weeks of age treated with Eromac 125 mg/5 ml have a recognized association with infantile hypertrophic pyloric stenosis (IHPS); parents should watch for vomiting or irritability with feeding and report it to a pediatrician promptly.
  • Patients with a history of QT prolongation, uncorrected electrolyte imbalances (especially low potassium or magnesium), or significant heart disease should use Eromac 125 mg/5 ml with caution due to the risk of arrhythmia.
  • Long courses of antibiotic therapy may result in overgrowth of non-susceptible organisms, including fungal infections; report any new or unusual symptoms during treatment.

Overdose Effects of Eromac 125 mg/5 ml

In case of suspected overdose, Eromac 125 mg/5 ml should be discontinued immediately and the patient should seek emergency medical care. Management focuses on prompt elimination of any unabsorbed drug (such as gastric lavage where appropriate) along with other supportive and appropriate measures as determined by a physician. Eromac 125 mg/5 ml is not effectively removed from the body by peritoneal dialysis or haemodialysis.

Storage Conditions

Store Eromac 125 mg/5 ml below 25°C, away from direct light and moisture. Keep all medicines, including Eromac 125 mg/5 ml, safely out of the sight and reach of children.

Use In Special Populations

Safety and effectiveness in children less than 12 years have not been established.

Reconstitution

  1. Shake the bottle well to loosen the dry powder before adding water.
  2. Add 60 mL or 100 mL of boiled and cooled water to the bottle, depending on the pack size specified on the label.
  3. For ease of mixing, add the water in two portions, shaking well after each addition until the powder is fully suspended.
  4. Shake the suspension thoroughly before each use to ensure an even dose.
  5. Keep the bottle tightly closed between uses.
  6. Store the reconstituted suspension in a cool, dry place — preferably in a refrigerator — and discard any unused portion after 7 days.

Frequently Asked Questions

What is Eromac 125 mg/5 ml used for?

Eromac 125 mg/5 ml is effective against a wide variety of bacterial infections, including: Upper Respiratory Tract Infections Tonsillitis and peritonsillar abscess Pharyngitis and laryngitis Sinusitis Secondary bacterial infections following colds and influenza Lower Respiratory Tract Infections Tracheitis Acute and chronic bronchitis Community-acquired pneumonia, including atypical pneumonia caus…

What is the dosage of Eromac 125 mg/5 ml?

The dose of Eromac 125 mg/5 ml depends on the patient's age, body weight, and the severity of the infection being treated. The following is a general dosing guide — always follow the exact dose prescribed by a registered physician. Age Group Recommended Dosage Adults and children over 8 years 250–500 mg every 6 hours for mild to moderate infections. In severe infections, the dose may be increased …

What are the side effects of Eromac 125 mg/5 ml?

Most people tolerate Eromac 125 mg/5 ml well, but like all antibiotics, it can cause side effects in some patients. Frequency Side Effects Common Abdominal discomfort or cramping, nausea, vomiting, diarrhea. These gastrointestinal effects usually subside on their own after a few days without needing to stop treatment. Less Common Mild allergic skin reactions such as rash or urticaria (hives). Rare…

Who should not take Eromac 125 mg/5 ml?

Eromac 125 mg/5 ml is contraindicated in patients with known hypersensitivity to Eromac 125 mg/5 ml or other macrolide antibiotics. It should also not be used together with cisapride, pimozide, astemizole, or terfenadine due to the risk of serious cardiac arrhythmias, or with ergot alkaloids due to the risk of ergotism.

What precautions should be taken with Eromac 125 mg/5 ml?

Eromac 125 mg/5 ml should be used with care in patients with impaired liver (hepatic) function, since it is excreted principally through the bile. Liver function may need to be monitored during prolonged therapy. Use cautiously in patients with myasthenia gravis, as macrolide antibiotics can occasionally worsen neuromuscular symptoms. High-dose or prolonged use, particularly in patients with kidne…

Is Eromac 125 mg/5 ml safe during pregnancy and breastfeeding?

Clinical and laboratory studies have shown no evidence of teratogenicity (birth defects) or toxicity to the developing fetus in humans. However, caution should still be exercised when prescribing Eromac 125 mg/5 ml to pregnant or breastfeeding women, since the drug crosses the placental barrier and is excreted in breast milk. Eromac 125 mg/5 ml is sometimes specifically prescribed during pregnancy…

Disclaimer

The information provided is accurate to our best practices, but it does not replace professional medical advice. We cannot guarantee its completeness or accuracy. The absence of specific information about a drug should not be seen as an endorsement. We are not responsible for any consequences resulting from this information, so consult a healthcare professional for any concerns or questions.