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1 pack of 8 100mg Doxycycline capsules for chlamydia

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Doxycycline for Chlamydia

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Doxycycline is a widely-used antibiotic, which can treat different types of infection. It’s also the recommended and most prescribed antibiotic for treating chlamydia. 

You can order doxycycline online, from Superdrug Online Doctor. All you have to do is fill in a short questionnaire and place your order. You can receive your doxycycline directly at home, with a free, fast, and discreet delivery.


Start Order

To place an order, fill in a brief questionnaire. One of our doctors will review your order and prescribe a suitable treatment.


Doxycycline 14 x 100mg tablets £20.00

Price includes standard delivery or click and collect.

In a hurry? Choose Click and Collect and pick up your order after just 3 hours from a Superdrug Pharmacy.

Delivery options

Delivery method Cost Estimated delivery

You will choose your delivery option at the checkout. Delivery options may vary depending on the pack size and dosage chosen.

About doxycycline for chlamydia

Doxycycline is an antibiotic used to treat a few different types of bacterial infection.  Antibiotics are divided into several classes and doxycycline belongs to the tetracycline class. 

Doxycycline is the recommended first-line treatment for chlamydia infections in the UK.

Antibiotics work against bacteria. For their own survival and reproduction bacteria need to produce certain proteins. Doxycycline works by entering the bacteria cells and blocking the production of these proteins.

If taken correctly, doxycycline helps to completely get rid of a bacterial infection like chlamydia in 95% of the cases. To make sure that doxycycline will work properly, it’s important that you complete the treatment by taking every single dose on time. 

Doxycycline helps you to fight the bacteria that are causing an infection in your body, but it does not prevent you from catching infections like chlamydia again. During your chlamydia treatment you’re advised to avoid vaginal, oral, and anal sex, even with a condom. The same is true for your partner. This will ensure you don’t pass the infection to other people or catch it again while you are recovering. 

If you do decide to have sex anyway, use a condom to make sure you avoid spreading your infection.

If you need to start a course of chlamydia treatment, you can order it online from Superdrug Online Doctor in a few simple steps: 

  • Fill in a quick questionnaire about your health
  • One of our doctors will review your order and approve a suitable treatment 
  • Doxycycline will be sent to you with a fast and discreet delivery 

When placing an order, your Superdrug doctor will ask you to tell them how you know that you need a chlamydia treatment. For example, if you or your partner has tested positive for chlamydia, you could be approved for treatment. 

The advantages of ordering online from Superdrug are that there’s no need for a face to face appointment and that the delivery is quick, discreet and free. You can also use our convenient online doctor service to get tested for chlamydia using a home test kit. Other ways to get a doxycycline prescription are through your GP, your sexual health clinic, or GUM clinic.

The right dosage of doxycycline depends on the condition you are taking it for. In order to successfully treat chlamydia, doxycycline must be taken for 7 days, twice a day, at 100 mg per capsule. The capsules must be swallowed with water, in the morning and in the evening, and can be taken with or without food. 

You’ll know if you need chlamydia treatment if you’ve had:

  • a positive home test for chlamydia
  • a GP diagnose you
  • unprotected sex with a partner who has a confirmed infection

If you think you might have the symptoms of chlamydia, but you’re not sure you have the infection, you won’t be able to get treatment. In this case we strongly recommend getting tested. The same is true if you’re not sure if your sexual partner might have an STI. In these cases, you could order a chlamydia test from our website, or get tested at your GP practice, sexual health clinic, or GUM clinic.

Doxycycline can be taken by people over 12 years old. Doxycycline treatment is not right for you if you: 

  • are allergic to doxycycline, or tetracyclines in general
  • are pregnant or breastfeeding
  • are younger than 12 
  • have sucrose or fructose intolerance
  • have enamel hypoplasia 

If you have the following conditions, you should talk to a doctor to check if it’s safe for you to take doxycycline: 

  • liver problems
  • kidney problems
  • oesophagitis 
  • an autoimmune disease, like lupus
  • myasthenia gravis 

Doxycycline can react with other medications, or supplements. If you’re taking the following medications, talk to a doctor before starting doxycycline treatment: 

  • Other antibiotics
  • Antacids 
  • Food supplements containing aluminium, bismuth, calcium, magnesium, or zinc
  • Iron supplements
  • Retinoids – used to treat various skin conditions
  • Quinapril – used to treat high blood pressure
  • Anticoagulants, like warfarin
  • Kaolin – used to treat diarrhoea
  • Ergotamine or methysergide – used to treat migraines or headaches
  • Methoxyflurane – used as anaesthetic
  • Methotrexate – used to treat psoriasis, rheumatoid arthritis, or cancer
  • Antiepileptics, like carbamazepine or phenytoin
  • Ciclosporin – used to adjust the body’s immune response after organ transplant
  • Rifampicin – used to treat tuberculosis

Doxycycline can also interfere with the effectiveness of the typhoid vaccine. To make sure that doxycycline is the right treatment option for you, always get assessed by a qualified doctor, online or in person. 

In the past azithromycin, branded under the name of zithromax, was used to treat chlamydia. But, it’s no longer a recommended treatment. The British Association for Sexual Health and HIV picks doxycycline as the only recommended treatment for chlamydia. 

Your doctor might prescribe you a different type of antibiotic, like amoxicillin or erythromycin if you:

  • are pregnant or breastfeeding
  • are allergic to doxycycline or azithromycin
  • get side effects as a result of using the recommended treatment

If the risk of complications of chlamydia is higher for you, your doctor might suggest a longer course of treatment: 10 instead of 7 days.

Leaving your chlamydia untreated is risky, since this is a type of infection that usually doesn’t go away by itself. If you choose not to treat your chlamydia, you put your sexual partner(s) at higher risk of infection, and you put yourself at risk of the complications of chlamydia.

The most common side effects of chlamydia treatment are: 

  • tummy pain
  • diarrhea 
  • feeling or being sick (nausea/vomiting)
  • thrush in women 

Doxycycline 100 mg, can cause similar side effects, and also:

  • headache 
  • sensitivity to light 

Side effects are possible, but not everyone taking doxycycline will get them. More severe side effects, which are much less common, but need immediate medical attention, include: 

  • severe skin reaction 
  • photo onycholysis: loosening of the nail from the nail bed after sun exposure
  • severe headaches 
  • blurred vision, double vision, blind spots 
  • bulging fontanelle: soft spots on your head 
  • heartburn
  • pseudomembranous colitis: severe watery or bloody diarrhea with very painful stomach cramps
  • teeth discoloration or underdevelopment 
  • blood disorders
  • muscle and joint pain
  • hepatitis, liver failure

If you’re experiencing mild or severe side effects after taking doxycycline, talk about them with your doctor or pharmacist. They might suggest to:

  • stop the treatment
  • switch to another antibiotic 
  • treat the side effects with other medications, like painkillers

Drinking alcohol during treatment can stop doxycycline working properly. At the same time, mixing doxycycline with alcohol can increase the risk of side effects and liver problems. If you avoid drinking alcohol during treatment, you’ll give your body the best chance to recover from the infection as soon as possible. You can start drinking alcohol safely 48 hours after taking your last capsule.

Doxycycline is also used for treating other conditions, like: 

  • respiratory tract infections
  • urinary tract infections 
  • other STIs
  • dermatological infections: among which the most common is acne
  • ophthalmic infections 
  • other infections: cholera and clostridium species

In different dosages, doxycycline can also be used to prevent (100 mg) and treat (200 mg) malaria. Doxycycline is also used to prevent scrub typhus, travellers' diarrhoea, and leptospirosis. 

Kent Pharmaceuticals Ltd. (2009). Doxycycline 100mg capsules. EMC.[online] Available at: https://www.medicines.org.uk/emc/product/4063/smpc [accessed 6th March 2019].

NHS (2018). Chlamydia treatment. [online] Available at: https://www.nhs.uk/conditions/chlamydia/treatment/ [accessed 6th March 2019].

NHS (2018). Doxycycline. [online] Available at: https://www.nhs.uk/medicines/doxycycline/ [accessed 6th March 2019].