About phenoxymethylpenicillin
Penicillin antibiotic
Used for
- Treats susceptible bacterial infections, including throat, skin, and dental infections.
- May prevent recurrent rheumatic fever and certain streptococcal infections.
Usual adult dose
Commonly 500 mg every 6 hours; dose and duration depend on infection.
Usual dose in children
Usually weight-based, commonly 25–50 mg/kg daily in divided doses; depends on infection.
Common side effects
- Nausea, vomiting, or diarrhea
- Rash or itching
- Serious allergic reaction, rarely
- Antibiotic-associated severe diarrhea, rarely
Important warnings
- Not effective against viral infections such as colds or flu.
- Avoid with a history of serious penicillin allergy.
- Seek urgent care for breathing difficulty or facial swelling.
- Complete the prescribed course unless a clinician advises otherwise.
Pregnancy
Generally considered usable during pregnancy when clinically needed; available evidence has not shown harm.
Breastfeeding
Generally compatible with breastfeeding; small amounts enter milk and may rarely affect the infant’s digestion or cause rash.
Interactions
- Probenecid can increase penicillin levels.
- Methotrexate levels or effects may increase.
- Oral anticoagulant effects may change; monitoring may be needed.
- Tell a clinician about other medicines, especially antibiotics.
AI-generated from general medical knowledge, not from this product's official leaflet. It may be incomplete or out of date. Not medical advice — ask a pharmacist or doctor before making any decision.