What it is used for
- Chest and respiratory infections
- Ear, nose and throat infections (such as some ear infections, sinusitis and tonsillitis)
- Certain dental infections
- Some urinary tract infections
- Skin infections
- Part of combination treatment for stomach ulcers linked to H. pylori
How it works
Amoxicillin is a penicillin-type antibiotic. It stops bacteria from building their protective cell walls, which causes the bacteria to break down and die. It works against bacteria, not viruses, so it does not help with colds or flu.
How it is taken
Comes as capsules, tablets, chewable tablets, and a liquid (oral suspension), and sometimes as an injection in hospital. Take it exactly as your doctor or pharmacist directs and follow the label. Finish the full course even if you feel better, unless your clinician tells you to stop. Do not change the amount or how often you take it on your own.
No doses here on purpose. The right strength and schedule depend on you — only a doctor or pharmacist should set them. Always follow your prescription and the label.
Common side effects
- Nausea
- Diarrhoea
- Vomiting
- Mild skin rash
- Stomach upset
- Thrush (a fungal infection of the mouth or vagina)
Serious effects — get help
- Signs of a severe allergic reaction such as swelling of the face, lips, tongue or throat, difficulty breathing, or a widespread hives rash
- Severe, watery or bloody diarrhoea that does not stop (possible serious bowel infection)
- Yellowing of the skin or eyes (possible liver problem)
- Unusual bruising or bleeding
If a reaction is severe — for example trouble breathing, swelling of the face or throat, or collapse — go to the nearest emergency room now or call your local emergency number. Do not wait for an online consultation.
Interactions to watch
- Other antibiotics
- Methotrexate
- Blood-thinning medicines such as warfarin
- Allopurinol (used for gout)
- Some oral typhoid vaccines
- Hormonal contraception may be less reliable if you have vomiting or diarrhoea
Who should take care
- Tell your clinician if you have ever had an allergic reaction to penicillin or any antibiotic
- Tell your clinician if you have kidney problems
- Tell your clinician if you have glandular fever (it raises the chance of a rash)
- Discuss use during pregnancy or breastfeeding with your doctor or pharmacist
- Mention any other medicines, supplements or herbal products you take