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Doxycycline is an antibiotic used to treat a variety of infections, including chlamydia.

14 capsules
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Doxycycline for chlamydia

Doxycycline is an antibiotic which is used to treat a variety of infections, including chlamydia.

In treatment of chlamydia, Doxycycline is effective at killing the bacteria which causes in the infection and is often prescribed when the infection is found in the rectum.

You can buy Doxycycline online from our UK pharmacy if you have been tested for chlamydia and the result came back positive. If you have not been tested but believe you may have been at risk of exposure, you should get tested by visiting your GP, a sexual health clinic or by ordering a chlamydia testing kit online.

What is chlamydia?

Chlamydia is a sexually transmitted infection (STI) which can be passed on through anal, oral and vaginal sex. It can also be passed on when sharing sex toys.

It's currently the most common STI in the UK and affects more than 200,000 people a year.

Prevention of chlamydia relies on safe sex practices such as the regular use of barrier contraception such as condoms and dams (thin pieces of plastic or latex used for oral sex), and by not sharing sex toys unless they are cleaned or covered in a new condom between uses on different partners.

In many cases, chlamydia is asymptomatic, meaning that a person infected with chlamydia may not display any symptoms of infection.

Symptoms of chlamydia in men include:

  • Burning or itching in the urethra
  • Discomfort and discharge from your rectum
  • Pain when urinating
  • Pain, discharge and redness of the eyes (conjunctivitis)
  • Testicular pain
  • Unusual discharge from the penis

Symptoms of chlamydia in women include:

  • Abdominal pain
  • Bleeding between periods
  • Discomfort and discharge from your rectum
  • Pain during or after sex
  • Pain when urinating
  • Pain, discharge and redness of the eyes (conjunctivitis)
  • Unusual vaginal discharge

Symptoms typically occur within 3 to 6 weeks after exposure to the infection.

If left untreated, chlamydia can cause infertility in both men and women.

How does doxycycline work?

Chlamydia is caused by bacteria called chlamydia trachomatis. The bacterial cells begin to spread and multiply in the body.

Chlamydiae (the name given to the bacteria itself) was once believed to be a virus due to the parasitic way the bacteria behaved. In order for the bacteria to survive, it hijacks a host cell and begins to produce proteins in order to replicate and spread.

Doxycycline, the antibiotic used to treat the infection, inhibits the production of a protein which the chlamydiae use to survive.

By blocking this protein, the bacteria can not replicate and become weakened. When the number of infected cells diminishes, the immune system can fight the remaining infection.

How to take doxycycline?

When used to treat an infection of chlamydia, doxycycline is often prescribed for 7 days.

The typical dosage is 100 mg tablets taken twice a day for 7 days.

Doxycycline side effects and cautions

Like all medication, doxycycline carries the risk of side effects. It is important to familiarise yourself with the potential side effects of the medication before taking it. All known side effects can be found in the patient information leaflet located in the medicine packaging.

Common side effects include:

  • Headache
  • Nausea
  • Sensitivity to sunlight
  • Vomiting

If you experience the above side effects, continue taking the medication as prescribed but inform your doctor or pharmacist if they continue for a prolonged period.

If you experience any of the following symptoms, you should contact your doctor immediately. The following side effects occur in less than 1 per 1,000 persons.

Uncommon side effects include:

  • Abdominal pain
  • Diarrhoea
  • Joint pain
  • Muscle pain
  • Ringing in the ears (tinnitus)
  • Skin rashes
  • Sore throat
  • Swollen lips, mouth and tongue
  • Visual disturbances
  • Yellowing of the skin and whites of eyes

If you experience symptoms of an allergic reaction, immediately stop taking the medicine and seek emergency medical attention.

Signs of an allergic reaction can include:

  • Blisters
  • Swelling of the face, lips, tongue or throat
  • Tightness of the chest and throat
  • Wheezing and difficulty breathing
  • skin rash

Is this medicine suitable for pregnant or breastfeeding women?

Doxycycline may not be suitable for pregnant or breastfeeding women.

Can I drink alcohol while taking this medicine?

While taking a course of this antibiotic, you should avoid drinking alcohol. Alcohol consumption may impact the effectiveness of the treatment.

Always complete the course of antibiotics that you have been prescribed, even if your symptoms clear before the end your course of treatment. Stopping antibiotic treatment early can cause the infection to return or affect future antibiotic treatment.

Staying safe with Prescription Doctor

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Table of contents

Doxycycline for chlamydia

What is chlamydia?

How does Doxycycline work?

How to take doxycycline?

Doxycycline side effects and cautions

Staying safe with Prescription Doctor

Treatment information

  • Product Name: Doxycycline
  • Active Ingredient(s): Doxycycline hyclate
  • Manufacturer: Actavis
  • Description: Doxycycline can treat chlamydia infections
  • Exemption: Prescription Only Medication
  • Administration: Oral
  • Available Strength: 100 mg
  • Application: Men and women over 18 with chlamydia
  • Drug Class: Tetracyclines
  • Alcohol Consumption: Avoid alcohol
  • When Pregnant: Doxycycline could harm the baby
  • When Breastfeeding: Doxycycline could harm the baby
Click here to view the Doxycycline - Patient Information Leaflet

Chlamydia Alternatives


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