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Azithromycin 500mg Tablets

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Azithromycin is an antibiotic used to treat chlamydia. It is the second-line treatment and should only be used where doxycycline cannot be taken. Two tablets should be taken on the first day, followed by one tablet on the second day and one tablet on the third day.

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Azithromycin PRICES

Medicine x4 Tablets (3-Day Treatment)
Azithromycin 500mg Tablets £13.58

About azithromycin

Key points

  • Taken daily for 3 days 
  • Second line treatment for chlamydia
  • Discreetly delivered


Buy azithromycin for chlamydia online 

You can order chlamydia treatment online without the need to visit a sexual health clinic or a doctor. Simply fill out an online questionnaire, and have your medication delivered in discreet packaging.

What is azithromycin used for?

Azithromycin is an antibiotic belonging to the macrolide class. Macrolide antibiotics have a broad spectrum of activity and are commonly used to treat mild to moderate bacterial infections including chlamydia. It is also used in the treatment of respiratory-tract infections, ear infections and skin infections, and is a versatile antibiotic.

How does azithromycin work to cure chlamydia?

Bacteria need certain proteins to survive, and azithromycin works to inhibit bacterial proteins from replicating, so that the bacteria is killed. This treats the infection and clears it from your body.

How long does azithromycin take to work?

Azithromycin begins to work as soon as it is taken. The course if for 3 days, however, it can take 7 days after the course has been completed, for the infection to have cleared.

How effective is azithromycin for treating chlamydia?

Azithromycin has a been considered an effective treatment for uncomplicated chlamydia for many years. This has resulted in the infection becoming resistant to the antibiotic, due to overuse. Over the years, the effectiveness has reduced, and doxycycline is now the first line recommended treatment for chlamydia.

Azithromycin dosage instructions

The dose of azithromycin required to treat chlamydia is 1g (2 x 500mg tablets) taken on the first day of treatment, followed by 500mg (1 tablet) take once daily, for the next two days.

Important note: Doxycycline is more effective than azithromycin for chlamydia. Azithromycin should only be used if you are unable to take doxycycline.  

Azithromycin side effects

Like all medicines, azithromycin can cause side effects such as: 

Very common: affects more than 10% of users 

  • Diarrhoea


Common: affects up to 10% of people 

  • Headache 
  • Vomiting, stomach pain or cramps, loss of appetite


Uncommon: affects up to 1% of users

  • Thrush 
  • Bacterial infection 
  • Inflammation of the throat 
  • Breathlessness, chest pain, wheezing and cough


Stop taking your medicine and seek urgent medical attention if you experience any symptoms of a severe allergic reaction, including: 

  • Sudden problems with breathing, speaking, and swallowing 
  • Swelling of the lips, tongue, face, and neck 
  • Extreme dizziness or collapse 
  • Severe or itchy skin rash (such as blistering and soreness of the eyes, mouth, or genital)
  • Yellowing of the skin or whites 
  • Severe pain in the stomach and back  
  • Diarrhoea that lasts a long time or has blood in it, with stomach pain or fever 

Azithromycin warnings

Azithromycin is generally considered to be safe to take in most individuals, except in those that have any of the following: 

  • People with allergies to azithromycin or macrolide antibiotics 
  • Electrolyte disturbances
  • Myasthenia Gravis 
  • Sever liver or kidney problems 
  • Severe heart problems or any heart issues to do with abnormal heart rhythm

Azithromycin and pregnancy

Information available about the use of azithromycin during pregnancy is limited. Therefore, you should not use Azithromycin during pregnancy, unless explicitly advised by your doctor. 

Azithromycin and breastfeeding

Azithromycin is present in breastmilk, and should only be used under the advice of your doctor, if no suitable alternatives are available.

Azithromycin interactions

You should discuss the use of azithromycin if you are taking any of the following: 

  • Ergotamine (used to treat migraines) 
  • Statins (used to treat high cholesterol) 
  • Warfarin or any other blood thinners 
  • Cisapride (used to treat stomach problems) 
  • Zidovudine or Nelfinavir (used in the treatment of HIV) 
  • Rifabutin (used to treat tuberculosis) 
  • Quinidine or Digoxin (used to treat heart problems) 
  • Cyclosporin (used as an after treatment in transplants) 
  • Theophylline (used to treat breathing problems)

Azithromycin alternatives

Doxycycline is the first line chlamydia treatment Research suggests that doxycycline is 100% effective in treating chlamydia. 

Azithromycin ingredients

Active ingredient: azithromycin dihydrate 

Inactive ingredients: Calcium hydrogen, phosphate, anhydrous, starch, pregelatinized (maize starch), croscarmellose sodium, sodium, lauryl sulfate, magnesium stearate. 


  1. NHS UK. (n.d.). Chlamydia. Retrieved April 22, 2024, from

  2. British Association for Sexual Health and HIV. (2015). UK National guideline for the management of genital tract infection with Chlamydia trachomatis. Retrieved April 22, 2024, from

  3. National Institute for Health and Care Excellence. (n.d.). Chlamydia - Uncomplicated genital. Retrieved April 22, 2024, from

Yes, you can drink alcohol when taking azithromycin tablets. Do not drink if you are experiencing nausea or vomiting when taking azithromycin.

If you still have symptoms, you should wait 1-2 weeks. Symptoms should start to ease off, however, if you are not noticing an improvement, you should visit your local GUM as you may wish to retest. There is also a possibility that you have another STI, which can be tested for at your local sexual health clinic. 

No, food does not affect the absorption of azithromycin tablets. You should avoid drinking milk or having any indigestion remedies 2 hours before or after taking the tablets, as this may affect the absorption of azithromycin. 

You should visit your GP or pharmacist if you are taking any medication that potentially may interact with azithromycin, you fall into the category of those in whom azithromycin may not be safe, you are pregnant or breastfeeding. There is no need to visit your doctor again after treatment with azithromycin, as it has a very high success rate. If symptoms persist, there is a small chance it can still be chlamydia that hasn’t been cured, but it is more likely to be attributed to another condition. You should see your doctor about getting further tests done such as a full STI screen. 

No, there is no need to get tested again after completing the treatment course. You should only get tested if you are still experiencing symptoms 1-2 weeks after completing the course, or, you have multiple sexual partners.

It is good practice for your sexual partners to be treated, as it is likely that you would have either caught the infection from them or passed it onto them. 

No, each individual will need to complete their own consultation. Multiple orders from the same account will be rejected.  

Yes, all your details are stored privately on a secure system. We will never share any information with anyone and have implemented security measures to ensure your personal details are kept safe. Your medication will be delivered by post in plain packaging, with no reference made to the contents of the package, or our company in general. 

Product Reviews For Azithromycin 500mg Tablets

Summary For Azithromycin 500mg Tablets

Medication class Macrolide antibiotic
Mechanism of action Stops bacterial growth
Active ingredient Azithromycin dihydrate
Strength 500mg
Effective within 3 days
Dosage instructions Two tablets on the first day, one tablet on day two and three
Manufacturer Sandoz, Teva, Almus, Actavis
Use with alcohol No known interaction

See over 12 product reviews

Product rated 5/5

Azithromycin 500mg Tablets
Very effective

By Jeffrey Grove, 19th of March

Azithromycin 500mg Tablets
Does the job

By customer, 20th of December

Azithromycin 500mg Tablets
All worked perfectly

By Craig, 26th of September

Azithromycin 500mg Tablets
good product

By Oritsegbubemi Sillo, 28th of August

Azithromycin 500mg Tablets
Did the job.

By customer, 03rd of April

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