The most common side effects of antibiotics affect the digestive system. These occur in around 1in 10 people.
Sideeffects of antibiotics that affectthe digestive system include:
These side effects are usually mild and should pass once you finish your course of treatment.
If you experience any additional side effects other than those listed above, you should contact your GP or the doctor in charge of your care for advice.
Around1 in 15people have an allergic reaction to antibiotics, especially penicillin and cephalosporins. In most cases, the allergic reaction is mild to moderate and can take the form of:
These mild to moderate allergic reactions can usually be successfully treated by taking antihistamines .
Butif you're concerned, or your symptoms don't respond to treatment, you should call your GP for advice. If you can't contact your GP, call NHS 111 .
In rare cases,an antibiotic cancause a severe and potentially life-threatening allergic reaction known as anaphylaxis .
Initial symptoms of anaphylaxis are often the same as above and can lead to:
Anaphylaxis is a medical emergency and can be life-threateningif prompt treatment isn't given. Dial 999 immediately and ask for an ambulance if you think you or someone around you is experiencing anaphylaxis.
Tetracyclines can make your skin sensitive to sunlight and artificial sources of light, such as sun lamps and sunbeds.
You should avoid prolonged exposure to bright light while taking these drugs.
Antibiotics are used to treat or prevent some types of bacterial infection. They work by killing bacteria or preventing them from reproducing and spreading.
Read about the uses of antibiotics, including treating or preventing some types of bacterial infections
Read about things to consider when taking the six main classes of antibiotics.
The most common side effects of antibiotics affect the digestive system. These occur in around 1 in 10 people.
Antibiotics can sometimes interact with other medicines or substances. This means it can have an effect that is different to what you expected.