Doxycycline (Chlamydia Treatment)


Doxycycline is an antibiotic treatment that is used to treat chlamydia. It is the British Association for Sexual Health (BASHH) first recommended course of treatment for chlamydia infection. Doxycycline treatment is given as a 7 day course.

Learn more about Doxycycline (Chlamydia Treatment) or ask our pharmacist
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What are Doxycycline chlamydia treatment?

Doxycycline is an antibiotic that is used to treat the most common STI, Chlamydia, which is a bacterial infection. You can catch chlamydia when having unprotected sex (sex without a condom) with a partner who has itDoxycycline is often symptomless; however, it can cause health complications in both men and women. Chlamydia is easy to test for and it is treated with antibiotics.  

What is Chlamydia?

Chlamydia is the most commonly diagnosed sexually transmitted disease in the UK, with over 200,000 patients testing positive every year. However, chlamydia can affect people of all ages. 

If you have had unprotected sex with a partner who could have chlamydia you need to get tested. Read more about Chlamydia: The Silent STI. 

What are the symptoms of Chlamydia in men?

Symptoms can range from: 

  • No symptoms (One quarter to one half of all males infected with chlamydia do not suffer from any symptoms)
    • Discharge from penis (white, cloudy or watery)
    • Burning sensation when passing urine
    • Swelling or painful of testicles
    • Painful joints if left untreated 

Chlamydia can also appear as a throat infection, conjunctivitis (in the eyes) and as rectal pain, discharge or bleeding. 

What are the symptoms of Chlamydia in women?

Symptoms can range from: 

  • No symptoms (Seven out of ten women with chlamydia do not suffer from any symptoms)
    • Abnormal vaginal discharge
    • Bleeding between periods
    • Bleeding or pain when having sex
    • Burning sensation when passing urine
    • Pelvic Inflammatory Disease (lower abdominal pains, vaginal discharge and fever)
    • Infertility if left untreated
    • Joint pain if left untreated 

How do you take Doxycycline chlamydia treatment?

Take one dose, twice a day, for 7 days. Swallow the tablet with plenty of water. 

Doxycycline is best taken with food, or a glass of milk, and should be taken at least one hour before you go to bed. 

Complete the 7-day course of treatment to clear the infection. 

Do not have sex until you have completed all 7 days of treatment. 

After the course of treatment is complete it is possible that you could test positive for Chlamydia for up to 8 weeks despite no longer being infectious.  

Side effects of Doxycycline chlamydia treatment?

As with any form of medication, using Doxycycline has side effects. For a full list of side effects, please read the Patient Information Leaflet of the Doxycycline.  Below are a few of the common side effects of using a Doxycycline: 

  • Increased sensitivity to sunlight
    • Headache
    • Tummy pain
    • Vomiting
    • Indigestion
    • Itchy skin
    • Vaginal Thrush 
  • Diarrhea  
  • Loss of appetite 

For a full list of side effects, please read the Patient Information Leaflet of the Doxycycline. 

Interactions of Doxycycline chlamydia treatment with alcohol and food?

It is not recommended to mix alcohol and Doxycycline as it can decrease the effectiveness of the drug.  

There are no food interactions with Doxycycline. 

Any interactions of Doxycycline chlamydia treatment with other drugs?

Tell your doctor or pharmacist if you are taking or have recently taken any other medication. Doxycycline may be affected by, 

  • Retinoids 
  • Any medications containing iron, bismuth, or zinc salts (such as antacids) 
  • Methotrexate 
  • Methoxyflurane 
  • Ciclosporin 
  • Carbamazepin, primidone, phenytoin or any other drug that is used to treat epilepsy 
  • Typhoid vaccination 
  • Methysergide or Ergotamine 
  • Barbiturates or any other strong sleeping tablets. 
  • Some oral contraceptives 
  • Sucralfate 
  • Kaolin 
  • Quinapril 
  • Anticoagulants 
  • Rifampicin 
  • Penicillin based antibiotics 

Is there any reason why I would not be able to take Doxycycline chlamydia treatment?

You can NOT take Doxycycline chlamydia treatment if: 

  • You are allergic to any of the ingredients 

If you are unsure of any of the above criteria, please contact your doctor before commencing treatment of Doxycycline. 

Why should I take Doxycycline chlamydia treatment?

Doxycycline chlamydia treatment effectively stops the spread of the infection in your body and of further inflammation of occurring as if untreated Chlamydia can lead to infertility. Once you have finished the course of treatment you are no longer infectious, but it is recommended that you use a male or female condom to prevent the spread of further STDs. 



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