Health Centres - Zithromax
How does it work?
Zithromax capsules and suspension contain the active ingredient azithromycin, which is a type of medicine called a macrolide antibiotic. (NB. Azithromycin is also available without a brand name, ie as the generic medicine.) Azithromycin is used to treat infections caused by bacteria.
Azithromycin works by preventing bacteria from producing proteins that are essential to them. Without these proteins the bacteria cannot grow, replicate and increase in numbers. Azithromycin therefore stops the spread of infection and remaining bacteria are killed by the body's immune system or eventually die.
Azithromycin is a broad-spectrum antibiotic that is active against a wide variety of bacteria that cause a wide variety of infections. Azithromycin may be used to treat infections of the upper or lower airways, skin or soft tissue, or ears. It is also be used to treat the sexually-transmitted infection chlamydia.
To make sure the bacteria causing an infection are susceptible to azithromycin your doctor may take a tissue sample, for example a swab from the throat or skin.
What is it used for?
- Bacterial infection of the lungs and airways (chest or lower respiratory tract infection, eg pneumonia, bronchitis)
- Bacterial infections of the nasal passages, sinuses or throat (upper respiratory tract infection, eg sinusitis, tonsillitis, pharyngitis)
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Bacterial infections of the middle ear
- Bacterial infections of the skin or soft tissue
-
Chlamydia
Warning!
- Zithromax capsules should be taken at least one hour before or two hours after food. Zithromax suspension can be taken with food.
- Unless your doctor tells you otherwise, it is important that you finish the prescribed course of this antibiotic medicine, even if you feel better or it seems the infection has cleared up. Stopping the course early increases the chance that the infection will come back and that the bacteria will grow resistant to the antibiotic.
- Broad-spectrum antibiotics can sometimes cause inflammation of the bowel (colitis). For this reason, if you get diarrhoea that becomes severe or persistent or contains blood or mucus, either during or after taking this medicine, you should consult your doctor immediately.
Use with caution in
- Severely decreased kidney function
- Abnormal heart rhythm seen on a heart monitoring trace as a 'prolonged QT interval', or people at risk of this (your doctor will know)
Not to be used in
- Allergy to macrolide type antibiotics, eg erythromycin
- Liver disease
This medicine should not be used if you are allergic to one or any of its ingredients. Please inform your doctor or pharmacist if you have previously experienced such an allergy.
Pregnancy and Breastfeeding
- The safety of this medicine for use during pregnancy has not been established. It is not recommended for use in pregnancy unless considered essential by your doctor. Seek medical advice from your doctor.
Label warnings
- Do not take indigestion remedies at the same time of day as this medication.
Certain medicines should not be used during pregnancy or breastfeeding. However, other medicines may be safely used in pregnancy or breastfeeding providing the benefits to the mother outweigh the risks to the unborn baby. Always inform your doctor if you are pregnant or planning a pregnancy, before using any medicine.
- This medicine passes into breast milk. It is not recommended for use during breastfeeding unless considered essential by your doctor. Seek medical advice from your doctor.
- Take at regular intervals. Complete the prescribed course unless otherwise directed.
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