Zithromax is an antibiotic usually used to treat bacterial infections like chlamydia. It contains the active ingredient azithromycin. It is no longer recommended for chlamydia, and instead, you're more likely to be provided with doxycycline.

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from £30.00

Product details

Zithromax is an antibiotic used to treat bacterial infections. It is a branded medication and contains the active ingredient azithromycin.

Zithromax is prescription medication and you cannot buy it over the counter.

Azithromycin is no longer recommended as a treatment for Chlamydia so we no longer offer it as part of our chlamydia service. We do offer Doxycycline as an alternative treatment.

Zithromax prices

Pack Size Price
500 mg - 3 tablet(s) £30.00

How it Works

About Zithromax

Zithromax vs azithromycin - What is the difference?

Zithromax is a branded medication manufactured by Pfizer. It contains azithromycin, an antibiotic which kills bacteria. Zithromax tablets therefore work in the same way as generic azithromycin but comes in branded packaging. Branded medicines can be slightly more expensive than generic medication. Please note, product packaging may differ from the image above. Which medication you get can vary depending on where you buy your medication. While some pharmacies may stock Zithromax, others may only supply the generic version. 

How to take Zithromax

You should take Zithromax without food, at least one hour before or two hours after you eat. It is very important that you take the full dose as advised. If you accidentally take more Zithromax than you have been prescribed, seek medical help immediately.

Can I drink alcohol with Zithromax?

There is no known interaction between Zithromax and alcohol.

Can I take Zithromax when pregnant or breastfeeding?

If you need to take Zithromax during pregnancy or while breastfeeding, speak to your local GP. Your GP will assess whether the tablets are suitable for you. It may be possible for you to take Zithromax if your GP approves.

Who can take it

You mustn’t take Zithromax if you are allergic to any of the ingredients. The same applies, if you are allergic to any antibiotics which are very similar to azithromycin, such as erythromycin or any other macrolide or ketolide antibiotic. ZIthromax is a prescription-only medication and your prescribing doctor will assess whether it is suitable for you before issuing a prescription. Make sure you let your doctor know if you are currently trying for a baby, pregnant or breastfeeding.

Which side effects does Zithromax cause?

Some patients experience side effects when taking Zithromax. In most cases, these side effects are mild and temporary.

At least 1 in 10 people:

  • stomach cramps and wind
  • feeling sick
  • diarrhoea

Less than 1 in 10 people:

  • dizziness or headache
  • numbness or pins and needles
  • being sick
  • change in taste or hearing
  • visual disturbances
  • indigestion and loss of appetite
  • itchy rashes and joint aches
  • changes in the composition of your blood, which may show in blood tests

Speak to your doctor immediately if you experience any serious allergic symptoms:

  • sudden wheezing and breathing problems
  • facial swellings, rash or itching
  • severe diarrhoea with blood
  • rapid or irregular heartbeat
  • feeling very faint

For a list of all known side effects of Zithromax read the patient leaflet provided with your tablets.

Drug interactions

Like most medications, Zithromax can interact with certain other medicines. It is therefore important that you let your doctor know if you are currently receiving any other treatment or if you have recently finished a course of medication. The following medications are known to interact with Zithromax:

  • Ergotamine (used to treat migraines)
  • Statins (used to treat high cholesterol levels)
  • Antacids (for heartburn and indigestion)
  • Warfarin and other coumarin type oral anticoagulants
  • Cisapride
  • The hayfever treatment terfenadine
  • Zidovudine and nelfinavir (used to treat HIV)
  • Rifabutin
  • Cyclosporin
  • Alfentanil
  • Theophylline
  • Astemizol
  • Digoxin
  • Pimozide

This means that taking these medications at the same time as Zithromax could weaken or increase their effect or that you could experience serious side effects as a result. Your prescribing doctor will ask you about your medical history and establish whether you can take Zithromax and how best to take it.

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