Buy trimethoprim 200mg treatment for cystitis online from Dr Fox - for recurring infection. Be prepared with a standby antibiotic to keep for when needed.Start order
|6 tablets (1 course - in stock)
Dr Fox supplies medicine on prescription and charges a small prescription fee based on the order value of each prescription.
Prescriptions are issued by our doctors online and sent electronically to our pharmacy.
|up to £10
|up to £20
|up to £40
If you have your own private paper prescription please post to our pharmacy (details).
Dr Fox prices are 25%–50% lower than other UK online clinics.
|Simple Online Pharmacy
|Trimethoprim 200mg x 6
UK delivery only: £2.90 per consultation via Royal Mail Tracked 24 Signed For (1-2 working days with tracking).
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- Trimethoprim is a prescription-only antibiotic tablet mainly used to treat cystitis in women and other urinary infections.
- Take 200mg twice daily for 3 days with 12 hours between doses.
- Order in advance as a standby treatment for repeated episodes.
- Read the patient leaflet for a full list of side effects, cautions, and interactions with other drugs.
Choosing the right antibiotic for cystitis
The information below is about trimethoprim tablets. There is a separate page about nitrofurantoin capsules, the alternative antibiotic available from Dr Fox for cystitis in women. General information about cystitis and standby treatment, and selecting the right antibiotic, can be found at the cystitis medical information page. Please also read the manufacturer's patient information leaflet supplied with trimethoprim tablets.
Trimethoprim is an antibiotic commonly used to treat uncomplicated cystitis in women, and other urine infections. In the last few years antibiotic resistance to trimethoprim has increased. About 30% of the bacteria which cause cystitis are now resistant to trimethoprim and it is no longer always the first choice antibiotic by GPs. The antibiotic nitrofurantoin is now often more effective and is often the first choice, although trimethoprim is still widely prescribed and many women find it effective and prefer it.
For further information see NHS - trimethoprim.
Trimethoprim 200mg twice daily for 3 days (12 hours between doses) is usually effective for cystitis. The tablets should be swallowed whole with a glass of water. They should not be chewed.
Improvement is usually seen within 24 hours and symptoms are usually completely resolved after 3 days.
Cautions and contraindications
Trimethoprim is not suitable for everyone. Patients with some medical conditions or who are also taking some other medicines cannot take it. Checks for suitability are carried out in the online consultation which is part of the ordering process.
Do not take trimethoprim tablets if the following apply:
- Allergy to trimethoprim or to any of the other tablet ingredients.
- You are pregnant.
- Severe liver problems.
Do not take trimethoprim tablets without first checking with your doctor or pharmacist if the following apply:
- Kidney problems, including dialysis.
- Low folic acid which may lead to anaemia.
- Known risk of high blood potassium levels.
Trimethoprim should not be taken with the following medicines:
- Repaglinide (diabetes).
- Procainamide (heart rhythm control).
- Digoxin (heart).
- Diuretics (water tablets).
- Rifampicin (tuberculosis).
- Warfarin-type anticoagulants (blood thinners requiring regular blood testing).
- Phenytoin (epilepsy).
- Pyrimethamine and dapsone (malaria).
- Immunosuppressant and bone marrow depressant drugs (including azathioprine, methotrexate, ciclosporin).
- Colistimethate (cystic fibrosis).
If in doubt about other medication check with your own doctor or pharmacist.
Side effects and severe reactions
As with any medicine side effects may occur although most patients do not experience them, or they may be mild and treatment does not always need to be stopped.
In very rare cases (fewer than 1 in 10,000), there may be an acute allergic reaction leading to angioedema or anaphylaxis. If affected, stop taking trimethoprim, and contact your GP, out-of-hours service, or telephone 111 or see 111.nhs.uk online. In an emergency telephone 999.
Side effects (non-emergency)
The side effects listed below are not medical emergencies, but may require medical advice.
Common (may affect up to 1 in 10 people):
- Feeling sick (nausea), being sick, diarrhoea.
- Skin rashes including hives (urticaria) and itching.
- Thrush or sore mouth (glossitis).
For more details about side effects see the manufacturer's patient information leaflet.
Pregnancy and breastfeeding
DO NOT take trimethoprim tablets if you are pregnant, think you may be pregnant or are trying to get pregnant.
If you are breastfeeding, it is usually fine to take a short course of trimethoprim, although small amounts are found in breast milk. The manufacturer recommends asking your doctor or pharmacist for advice before taking trimethoprim when breastfeeding.
Dr Fox does not supply cystitis treatment for women who are pregnant or breastfeeding - please contact your GP.
Other measures which can help cystitis
- Increase the amount of water you are drinking each day to 2-3 litres (4-5 pints, or 10-12 glasses or mugs).
- Avoid alcohol, caffeine, and fizzy drinks which can irritate the bladder.
- Take paracetamol or ibuprofen for pain if necessary.
Sometimes cystitis will go away by itself in a few days without antibiotic treatment. If symptoms are mild, self-treatment and 'wait-and-see' for a few days may be the best approach. If symptoms are severe, or worsening, antibiotics are usually preferred. Women who have repeated infections will usually know if their symptoms are likely to stop on their own.
Patient Information Leaflet
The Patient Information Leaflet (PIL) is the leaflet included in the pack with a medicine and must be read before taking the medicine. It is written for patients and gives information about taking or using a medicine.
Can I take trimethoprim if I am lactose intolerant?
Unfortunately no. Trimethoprim tablets all contain lactose.
Why can't I take trimethoprim now I'm pregnant?
Trimethoprim affects folic acid metabolism, and this is how it works as an antibiotic. Folic acid is very important in the development of the foetus. It is therefore recommended to avoid trimethoprim during pregnancy, particularly in the first trimester when the foetal spinal cord is developing.
How can I reduce the chance of having antibiotic resistant cystitis?
Antibiotic resistant bacteria are becoming more common. With cystitis, more of the common bacteria are resistant to trimethoprim than nitrofurantoin. If taking repeated courses of antibiotics to treat repeat urine infections, using a different antibiotic each time may help to reduce development of resistance. In particular, taking a further course of trimethoprim within 3 months of a previous course is linked to developing trimethoprim resistant infections, so take nitrofurantoin instead.
- Accord Healthcare, 2019, Trimethoprim 200mg Tablets: Summary of Product Characteristics, accessed 06 December 2021
- BNF/NICE, 2017, TRIMETHOPRIM, accessed 06 December 2021
Recent Trimethoprim reviews
Good worked as it said it would
I. Daniels Verified
Great for clearing up cystitis.
worked for me
Does what it says on the box
Always works for me I suffer all the time with water infections I've had them that many times I know when they're coming on as I am super tired and my wee has a certain smell to it. The tablets make me feel amazing after 24 of taking them shame they don't keep them away for ever but most time I think alcohol is the culprit. I'm not a big drinker anymore due to this. Antibiotics 10/10
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