Doxycycline 100mg Capsules for Chlamydia Treatment
Doxycycline is a first-line antibiotic used to treat uncomplicated chlamydia infection. Complete a confidential online clinical assessment before treatment is prescribed where clinically appropriate.
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• Reviewed by a qualified UK prescriber
• Treatment supplied where clinically appropriate
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Clinical Information
Doxycycline is a highly effective, broad-spectrum tetracycline antibiotic. It is established as the primary, first-line clinical recommendation in the UK for treating uncomplicated genital Chlamydia trachomatis infections. Doxycycline works by penetrating the bacterial cell wall and inhibiting vital protein synthesis. This stops the chlamydia bacteria from expanding, enabling your body's immune system to cleanly eliminate the remaining infection.
Doxycycline (100mg Oral Capsules)
Clinically proven to provide a near 98% cure rate for uncomplicated infections.
Sent out in completely unmarked, plain packaging via tracked delivery channels.
Dosing & Administration Guide
To ensure total bacterial eradication and avoid the development of recurring infection, you must complete the full course as instructed:
- Dosing Schedule: Take one 100mg capsule twice a day (morning and evening, ideally 12 hours apart) for a strict period of 7 continuous days. Do not stop early.
- Esophageal Protection: Always swallow each capsule whole with a full glass of water while sitting or standing upright. **Do not lie down for at least 30 minutes** after taking your dose to prevent the capsule from irritating your food pipe.
- Food & Gastrointestinal Care: If you experience stomach discomfort, you can take Doxycycline with a meal. However, avoid taking it alongside dairy products (milk, cheese, yogurt) as calcium binds to the drug and lowers absorption.
- Missed Doses: If you forget a capsule, take it as soon as you remember. If your next scheduled dose is less than 4 hours away, skip the missed capsule entirely. Never double your dose.
Important Patient Safety Details
Review these critical medical contraindications and lifestyle precautions before implementing your course.
- Strict Sexual Abstinence: To prevent passing the infection back and forth, you must absolutely abstain from all sexual contact (including oral, anal, and vaginal sex, even with a condom) until both you and your sexual partner(s) have completely finished the full 7-day treatment course.
- Photosensitivity (Sun Sensitivity): Doxycycline can make your skin highly sensitive to UV light. Avoid sunbeds and direct, prolonged sun exposure, and always apply high-factor broad-spectrum sunscreen while taking this medication to avoid severe sunburn.
- Dairy & Antacid Interference: Calcium (in dairy), iron supplements, and indigestion remedies (antacids containing magnesium, aluminium, or calcium) severely diminish the effectiveness of this antibiotic. Space these products at least 2 to 3 hours apart from your capsule.
- Pregnancy & Development: Doxycycline is strictly contraindicated during pregnancy and breastfeeding, as it can cause irreversible discoloration of developing teeth and impact bone growth in the foetus or infant.
Doxycycline 100mg Chlamydia treatment: Frequently Asked Questions
Why is Doxycycline preferred over a single-dose treatment for Chlamydia?
In the past, Chlamydia was frequently treated with a single high dose of Azithromycin. However, UK national guidelines (BASHH) were updated to favor a 7-day course of Doxycycline. Clinical studies demonstrated that Doxycycline provides significantly higher cure rates, particularly for clearing rectal infections (which are often asymptomatic), and it substantially lowers the risk of the bacteria developing antibiotic resistance.
Can I take Doxycycline with my morning coffee or cereal?
You can take it with a morning meal to help settle your stomach, but you must be mindful of dairy. If your coffee contains milk or your cereal is served with milk or yogurt, the calcium will chemically bind to the Doxycycline in your stomach, preventing your body from absorbing the medicine correctly. Opt for a non-dairy alternative or take the medication with water, ensuring you wait at least 2 hours before consuming rich sources of calcium.
What should I do if I get a stomach upset or diarrhea while taking Doxycycline?
Mild stomach irritation, nausea, and loose stools are relatively common side effects of Doxycycline. Taking your capsule with a non-dairy meal or a large volume of water can help mitigate this. However, if you experience severe, watery, or persistent diarrhea, or severe stomach cramping, stop taking the medication immediately and contact our pharmacy team or a doctor, as this could indicate a more serious gastrointestinal reaction.