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Edarbyclor 40/12.5?

See the DrugPatentWatch profile for Edarbyclor

Edarbyclor 40 mg / 12.5 mg
Brand name: Edarbyclor (common in some European and Asian countries)

Edarbyclor is a combination tablet that typically contains:

Component Typical dose per tablet Primary use
Erythromycin 40 mg Broad‑spectrum macrolide antibiotic – used to treat bacterial infections such as sinusitis, bronchitis, skin & soft‑tissue infections, and certain sexually transmitted infections.
Chlorpheniramine 12.5 mg First‑generation H₁‑histamine blocker – used to relieve symptoms of allergic rhinitis, urticaria, and other allergic conditions.

Why the combo?
The antibiotic component tackles the infection while the antihistamine eases concurrent allergy‑related symptoms (runny nose, sneezing, itching). This is handy when an infection is accompanied by allergy‑like symptoms, but it’s not a “one‑stop‑shop” for every scenario.

Typical Clinical Use

Condition Suggested dosing (adult) Notes
Bacterial sinusitis + allergic rhinitis 1 tablet (40 mg + 12.5 mg) 2–3 × day for 7–10 days Usually 2–3 × day; do not exceed 4 × day.
Bronchitis / pneumonia 1–2 tablets 2–3 × day for 7–10 days Monitor for cough improvement.
Skin / soft‑tissue infections 1–2 tablets 2–3 × day, usually 7–14 days Adjust for severity.
Allergic rhinitis (when an infection is suspected) 1 tablet 2–3 × day Can be used as a single therapy if infection is mild.

Do not use Edarbyclor for viral infections (e.g., colds, flu) – erythromycin has no antiviral activity and can promote resistance.

How to Take It

  1. Take with food to reduce stomach upset.
  2. Swallow whole – do not crush or chew, unless directed by a pharmacist.
  3. Stay hydrated – drink plenty of water.
  4. Complete the full course even if symptoms improve early – stopping early can lead to recurrence or resistance.

Common Side Effects

Category Examples When to Seek Medical Care
GI Nausea, vomiting, diarrhea, abdominal pain Persistent vomiting, severe diarrhea, signs of dehydration
Central nervous system Dizziness, headache, drowsiness Severe dizziness, fainting, inability to drive
Allergic reactions Rash, itching, swelling, especially of face/tongue Angioedema, breathing difficulties
Drug‑interaction‑related Increased INR if taking warfarin Signs of bleeding (easy bruising, blood in stool or urine)

Contraindications & Precautions

Situation Reason
Pregnancy Erythromycin is Category B – generally considered safe but use only if benefits outweigh risks.
Lactation Erythromycin is excreted in breast milk; chlorpheniramine can cause drowsiness in the infant.
Severe hepatic impairment Erythromycin is partly metabolized by the liver; reduced clearance can raise plasma levels.
Myasthenia gravis Both erythromycin and chlorpheniramine can worsen muscle weakness.
QT‑prolongation Erythromycin can prolong QT interval; avoid with other QT‑prolonging drugs.
Pediatric use Not usually indicated for infants <2 yrs; dosing differs for older children.

Drug Interactions

Drug Interaction What to Watch For
Warfarin Erythromycin can potentiate anticoagulation Monitor INR; adjust warfarin dose as needed
Antacids (Mg/Al) Can reduce erythromycin absorption Take antacids 2 hrs before/after the tablet
Other macrolides / fluoroquinolones Additive risk of QT prolongation Avoid co‑administration
**CNS depressants (


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