Penicillin
There are some important things to consider before taking antibiotics.
This page contains information on the six main classes of antibiotics:
penicillin
cephalosporins
aminoglycosides
tetracyclines
macrolides
fluoroquinolones
Don't take one of the penicillin-based antibiotics if you've had anallergic reaction to them in the past. People who are allergic to one type of penicillin will be allergic to all of them.
People with a history of allergies, such as Asthma , eczema or hay fever , are at higher risk of developing a serious allergic reaction (anaphylaxis) to penicillins, although cases are rare.
Penicillins may need to be used at lower doses and with extra caution if you have:
Most penicillins can be used during pregnancy and breastfeeding in the usual doses.
Tell your healthcare professional if you're pregnant or breastfeeding, so they can prescribe the most suitable antibiotic for you.
If youpreviouslyhad an allergic reaction to penicillin, there's a chance that you may also be allergic to cephalosporins.
Cephalosporins may not be suitable if you have kidney disease, but if you need one you will probably be given a lower than usual dose.
If you're pregnant or breastfeeding, or have acute porphyria, check with your doctor, midwife or pharmacist before taking cephalosporins.
Aminoglycosides are normally only used in hospitalto treat life-threatening conditions such as septicaemia,as they can cause kidney damage in people with pre-existing kidney disease.
They're only used during pregnancy if your doctor believes they're essential.
The use of tetracyclines isn't usually recommended unless absolutely necessary in the following groups:
You shouldn't take macrolides if you have porphyria a rare inherited blooddisorder.
If you're pregnant or breastfeeding, the only type of macrolide you can take is erythromycin (Erymax, Erythrocin, Erythroped or Erythroped A) unless a different antibiotic is recommended by your doctor.
Erythromycin can be used at the usual doses throughout your pregnancy andwhile you're breastfeeding.
Other macrolides shouldn't be used during pregnancy,unless advised by a specialist.
Fluoroquinolones aren't normally suitable for women who are pregnant or breastfeeding.
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.