Amoxicillin

What is Amoxicillin used for?

Amoxicillin is a penicillin-class (beta-lactam) antibiotic that kills or inhibits bacteria by disrupting their cell walls. It is used to treat a range of bacterial infections, including ear, nose and throat, respiratory tract, urinary tract, skin and dental infections. It has no effect on viral infections (such as colds or flu) and should only be used on a doctor's prescription after diagnosis.

How to take Amoxicillin and adjust the dose

A typical adult dose is 250-500mg every 8 hours, or 500-875mg every 12 hours, depending on infection severity, usually for a 7-10 day course that should be completed even if symptoms improve. Pediatric dosing is weight-based and must be determined by a doctor or pharmacist — do not adjust it yourself. It can be taken with or without food. (This is a general reference range, not verbatim labeling for a specific HK product; follow your doctor's prescription and the package insert.)

Amoxicillin side effects

• Common: nausea, vomiting, diarrhoea, skin rash
• Serious (rare): anaphylaxis/severe allergic reaction, severe skin reactions, abnormal liver function, C. difficile-associated diarrhoea (pseudomembranous colitis)

Who should not take Amoxicillin?

• Contraindicated in patients allergic to penicillins or cephalosporins
• Not recommended in infectious mononucleosis (increased rash risk)
• Dose adjustment needed in renal impairment
• Consult a doctor if pregnant or breastfeeding
• May reduce effectiveness of oral contraceptives — caution advised