Trimethoprim
Order Trimethoprim Online
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Trimethoprim is one of the first line antibiotic treatments for cystitis (along with the antibiotic MacroBid). A short course of Trimethoprim is prescribed to treat cystitis and reduce the risk of recurring infections.
To order cystitis medication online, fill in our brief questionnaire and select your preferred treatment. Our doctor will review your order and approve appropriate treatment.
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Free standard delivery FREE Estimated Delivery: 25-27th July We dispatch orders every day from Monday to Friday. If placed before 4pm, your order will be dispatched the same day. Orders placed after 4pm will be processed and sent out the next working day. Next Day Click & Collect FREE Collection: 24th July Collect your order from any Royal Mail post office. You will receive an email or SMS as soon as your order is ready for collection. Your order will be available to collect from the Post Office for up to 18 days. Proof of Identification will be required for collection. Next Day Express delivery £3.99 Estimated Delivery: 24th July by 1pm If placed before 4pm, your order will be delivered by 1pm on the next working day. Orders placed after 4pm are processed and sent out the next day and delivered the day after. You will choose your delivery option at the checkout. Delivery options may vary depending on the pack size and dosage chosen.
About Trimethoprim
Ingredients
Trimethoprim 200mg tablets contain 200mg of the active ingredient Trimethoprim. Other ingredients are colloidal silicon dioxide, lactose, macrogol, magnesium stearate, providence, sodium starch glycollate, stearic acid and E460. If you are allergic to any of these ingredients, you should not take Trimethoprim.
Dosage
A standard Trimethoprim tablet contains 200mg Trimethoprim. You will need to take one pill twice a day for three consecutive days. If you miss a pill just, carry on with the normal dose the next day. Do not take extra pills to make up for the missed dose. Trimethoprim should be swallowed whole and taken with a glass of water. Do not stop taking Trimethoprim just because the symptoms disappear. Always complete your course of antibiotics to prevent the infection recurring and to prevent the bacteria from developing a resistance. If you accidentally take more Trimethoprim than you should, you must consult your doctor immediately.
Side effects
- Nausea and occasionally vomiting
- Headache
- Loose stools
- Sore throat or persistent cold
- Joint pains
- Rashes
- Rarely - diarrhoea
- Rarely - Dizziness and drowsiness. Do not drive or operate machinery under these circumstances.
- Rarely - Short term hair loss
The following side effects are severe and you must see a doctor immediately if you experience any of the following:
- Possible bruises, slow clotting of the blood, anaemia, or fever accompanied by blisters and rashes
- Infrequently there may be changes to the sense of feeling, muscles feel weak, vision is blurred, and confusion or mood swings. These maybe irreversible.
- Inflammation of salivary glands causing facial pain
- Inflammation of the pancreas causing severe abdominal pain
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Trimethoprim is a broad spectrum antibiotic. One of its main uses is to treat bacterial urinary tract infections (UTIs). Urine is produced in the kidneys, temporarily held in the bladder and then passed through the urethra (the urine tube). Infection usually starts at the exit of the urethra, which is at the tip of the penis in men, or in the vaginal fold in women and moves into the bladder. If untreated, the infection can travel upwards to the kidneys, where it becomes much more serious. In its use against UTIs, Trimethoprim is targeted at bacterial infections of the bladder (cystitis) before they reach the kidney.
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The active ingredient Trimethoprim prevents bacteria from taking up folic acid and therefore interferes with their reproduction. In the same way, it also prevents you absorbing folic acid, which is why Trimethoprim must not be taken during pregnancy. The symptoms should disappear within a few days. However, you must complete the full 3-day course of antibiotics to ensure the infection is completely treated to prevent the infection from recurring.
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You should feel better within a day or two of taking Trimethoprim tablets. One course of Trimethoprim will last three days, after which you should have noticed a significant improvement. If your symptoms persist, it is important for you to seek medical help immediately. Your doctor will carry out further tests to establish the nature of your infection. It is important to seek help without delay, as urinary tract infections can quickly spread to the kidneys, making them more painful and harder to treat. If Trimethoprim does not work, it may be because your UTI is Trimethoprim resistant.
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No. Trimethoprim is not targeted at the Chlamydia bacterium, which is a sexually transmitted infection (STI) that also causes Cystitis. If you have a UTI, it does not necessarily mean you have Chlamydia. In fact, Chlamydia is the cause of only a small proportion of UTIs. If you think you have chlamydia, please visit our chlamydia page for further information.
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In rare cases, patients are allergic to Trimethoprim or one of the ingredients. If this applies to you, your doctor will be able to advise you, which alternative treatment to take. If you are suffering from a blood disorder or kidney disease, you must also speak to your doctor, as Trimethoprim may be harmful for you.
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No. You must not use Trimethoprim if you are pregnant. Trimethoprim can lead to a folic acid deficiency which can, especially in the early stages of pregnancy, lead to an increased risk of neural tube defects. Taking Trimethoprim during this time can seriously affect the formation of your baby’s brain and spine.
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Trimethoprim is passed into breast milk, however, short-term use of Trimethoprim is not a problem. You should consult a doctor to discuss the suitability of Trimethoprim while breast-feeding.
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Antibiotics can make oral contraceptive pills less effective. In addition, antibiotics may cause vomiting or diarrhoea, which affect your contraceptive protection. Use need to use a condom in addition to your regular oral contraceptive to prevent unwanted pregnancy while taking Trimethoprim.
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Yes. There is no interaction between alcohol and trimethoprim. Please note, that it is not advisable to consume alcohol during a bout of cystitis, as it can irritate your bladder further.
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- If you are under 12 years old
- If you are pregnant
- If you are allergic to Trimethoprim or any other ingredients of the pill
- If you have severe kidney disease
- If you have a severe liver disease
- If you have a blood disorder
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- If you have kidney disease or are having dialysis treatment
- If you have low levels of folic acid
- If you are using other antibiotics, especially rifampicin
- If you are using anticoagulants to prevent your blood clotting (e.g. Warfarin)
- If you are using Ciclosporin e.g. to prevent transplant rejection.
- If you are using digoxin e.g. for heart conditions
- If you are using phenytoin e.g. for epilepsy
- If you are using pyrimethamine e.g. to treat malaria
- If you are using bone marrow depressants
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Deputy Medical Director
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Cystitis bladder infections are caused by bacteria and need to be treated with antibiotics. Zava offers a variety of treatment through a convenient, discreet service.
