from
£15.99
Doxycycline is antibiotic used to treat chlamydia. According to national guidelines, it is the most effective chlamydia treatment and the recommended option. One capsule should be taken two times a day for 7 days.
You can order doxycycline online to treat chlamydia if you or your partner have had a positive diagnosis for chlamydia. You will need to fill out an online consultation for one of our pharmacists to assess.
If you or your partner have not had a chlamydia diagnosis, you can buy a home chlamydia test kit, which involves providing a urine sample so that it can be analysed in our partner laboratory. Results usually take 1-2 working days to come back after having sent off your sample using the pre-paid envelope provided.
Name & Dosage | x14 Capsules (Full Treatment) |
---|---|
Doxycycline 100mg Capsules (Full Treatment) |
£15.99 |
Medication Class | Tetracycline antibiotic |
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Mechanism of action | Stops bacterial growth |
Active ingredient | Doxycycline hyclate |
Strength | 100mg |
Effective within | 7 days |
Dosage Instructions | One 100mg capsule for 7 days |
Manufacturer | Actavis, Teva, Chanel, Sovereign |
Use with alcohol | Small amounts |
Doxycycline is an antibiotic belonging to the tetracycline class. It is used to treat chlamydia, as well as other infections. It can also be used for the purpose of preventing malaria when travelling.
Doxycycline interferes with the bacteria’s ability to produce proteins, which are important for its survival. This prevents the bacteria from replicating, until it is no longer active.
Treatment starts to work relatively quickly, and it takes around 48 hours for doxycycline to start working. However, it can take up to 7 days after having completed treatment, for your body to be free from chlamydia. This is why is it important to avoid any form of sexual contact for 7 days after you have finished treatment.
According to research, doxycycline has a 100% success rate in treating chlamydia. It is important to note that treatment must be taken as prescribed, and failure to adhere to the prescribed regime of one capsule twice a day may influence results.
Important note:
If you forget to take a dose, you should take it as soon as you remember. If you remember when it comes to taking your next dose, do not take two together. It is unlikely that missing one dose will impact the outcome of treatment, but you should inform your doctor or pharmacist. You may need to test for chlamydia a few weeks after having completed treatment to make sure that it has been cleared. Missing more than one dose may have an impact on the outcome of treatment.
Please note – doxycycline and sunlight can cause a photosensitivity reaction
For those that are allergic to doxycycline, or unable to take it, azithromycin is a suitable alternative. It is a 3 day course, and clinical studies have proven it to have a success rate of 97%, with a mild side-effect profile.
Active ingredient: Doxycycline hyclate
Inactive ingredients: Sucrose, maize starch, crospovidone, Basic Butylated, Methacrylate Copolymer (Eudragit E100) and Purified Talc
Whilst the active ingredient will remain the same, the inactive ingredients may differ amongst brands. You should read the patient information leaflet supplied with your medication, for a full list of ingredients.
The dose for treating chlamydia is doxycycline 100mg twice a day for 7 days.
Doxycycline can cause side effects, but not everybody will experience them.
Common: affecting up to 1 in 10 users
Uncommon: affecting up to 1 in 100 users
You should stop taking your medicine and seek urgent medical attention if you experience:
Doxycycline is not suitable if:
You should discuss the use of doxycycline with your doctor if you are taking any of the following medication:
Doxycycline is not suitable if you are pregnant, as it can slow down bone growth and stain the teeth of the developing foetus.
Doxycycline is present in breastmilk and should be avoided when breastfeeding.
Nausea and vomiting are common side effects of doxycycline. If you vomit after taking doxycycline, you should carry on with the prescribed course. Although doxycycline can make you sick, partial absorption or missing one dose is unlikely to have an effect on the success of treatment. Try taking doxycycline after a meal to reduce feelings of nausea. If you throw up more than once, you should contact your doctor as you may need to try a different treatment.
Food does not affect the absorption of doxycycline and you can choose to take doxycycline on an empty stomach or after food. One of the possible side-effects of taking doxycycline is that it may make you feel slightly nauseas. If this is the case, you may find it helpful to take doxycycline after a meal.
Moderate alcohol consumption will not necessarily have an impact on the effectiveness of doxycycline, but it can make you feel slightly sick and dehydrated. You should avoid drinking large amounts of alcohol or avoid alcohol consumption altogether for the duration of your treatment if possible. Large amounts of alcohol consumption can reduce the effectiveness of doxycycline in treating chlamydia.
It can take 1-2 weeks for chlamydia symptoms to ease off. If your symptoms have not improved after 2 weeks, you should speak to your doctor.
You should visit your GP in the following circumstances:
Doxycycline has a very high success rate, and it is not usually necessary to get tested after you have completed the treatment course. However, you should get retested if you didn’t take your medication as prescribed, you engaged in sexual activity whilst taking treatment, your symptoms still persist, or you have sexual partners that change on a regular basis (testing is recommended every three months in this case).
Chlamydia is the most common sexually transmitted infection and can cause many long-term complications such as infertility and reactive arthritis. You should let your sexual partners know if you have had a positive diagnosis, so that they can receive treatment and avoid re-infecting you or others.
You should wait at least seven days after completing a full course of doxycycline treatment for chlamydia before engaging in unprotected sex. This allows the medication to effectively treat the infection and reduces the risk of transmitting it to sexual partners.
You should let your GP know if you are scheduled to receive a typhoid vaccination whilst on treatment, or within 72 hours after having completed treatment. This is because doxycycline can reduce the effectiveness of typhoid vaccinations.
Each patient must fill out a questionnaire individually as it assesses the suitability of doxycycline based on their medical status. The online consultation is intended to ensure that our service is safe for all those that we prescribe treatment for. Everyone must complete an individual consultation using their own account. Multiple orders under the same account will be rejected.
Your medical records are stored on a secure server which is not shared with anyone. Your order will be dispatched in a plain envelope that has no reference to what is inside.
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Written by Chemist Click
First created 23rd April 2025
Last reviewed 1st October 2025
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