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Trimethoprim

Trimethoprim is a widely prescribed antibiotic used to treat bacterial infections, primarily urinary tract infections (UTIs). UTIs occur when bacteria from outside the body enter the urinary tract, causing discomfort and symptoms such as burning during urination and abdominal pain.

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Dose guides: 200mg

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Trimethoprim 200mg product packaging

Medically reviewed by Muhammad Abdul Jalil, Superintendent Pharmacist · GPhC Reg No: 2236161

Last reviewed

Trimethoprim: Effective Treatment for Urinary Tract Infections

What is Trimethoprim?

Trimethoprim is a widely prescribed antibiotic used to treat bacterial infections, primarily urinary tract infections (UTIs). UTIs occur when bacteria from outside the body enter the urinary tract, causing discomfort and symptoms such as burning during urination and abdominal pain.

Available in 200mg tablets, Trimethoprim is effective in treating and preventing cystitis, helping to stop the infection from spreading and allowing the body to recover more quickly. At Medihealth Direct, you can purchase Trimethoprim after completing a quick online consultation.

How Does Trimethoprim Work?

Trimethoprim works by inhibiting bacterial growth, and halting the spread of the infection. It targets the bacteria’s ability to produce folate, a substance they need to replicate. This allows the body’s immune system to eliminate the bacteria effectively.

Prompt treatment with Trimethoprim prevents the infection from spreading to other parts of the urinary system, such as the bladder or kidneys. Symptoms often improve within hours of starting the medication, though it’s essential to complete the full course to prevent recurrence.

Benefits of Trimethoprim

  • Rapid Relief: Symptoms typically improve quickly after starting the treatment.
  • Clinically Proven: Tried and tested for efficacy in treating UTIs.
  • Convenient: Easy-to-swallow tablets that fit into your daily routine.
  • Low Risk of Side Effects: Well-tolerated by most individuals.

How to Use Trimethoprim

Dosage Guidelines:

  • To Treat Cystitis: Take one 200mg tablet twice daily for 3 days.
  • To Prevent Recurrent UTIs: Take one 100mg tablet once daily before bedtime.
  • After Trigger Exposure: Take one 200mg tablet immediately.

Instructions:

  • Swallow tablets with water; do not crush or chew them.
  • Take the medicine as soon as you notice symptoms.
  • Complete the full course, even if symptoms subside, to prevent recurrence.

Missed Dose:

  • If you forget a dose, take it as soon as you remember.
  • If it’s near the next scheduled dose, skip the missed one.
  • Do not take two tablets together.

Potential Side Effects of Trimethoprim

Most side effects are mild and subside after completing the course. Common side effects include:

  • Loss of appetite
  • Sore throat
  • Skin rashes
  • Diarrhoea
  • Fatigue or anaemia

Seek Immediate Medical Attention if you experience:

  • Severe allergic reactions (e.g., swelling of the face or breathing difficulties).
  • Persistent or severe side effects.

Precautions and Interactions

Who Should Avoid Trimethoprim?

  • Pregnant or breastfeeding women.
  • Individuals with kidney or liver issues.
  • Those with a folate deficiency or vitamin deficiency.
  • People with blood disorders or acute porphyria.

Potential Drug Interactions:

Trimethoprim may interact with certain medications, including:

  • Repaglinide (diabetes medication).
  • Diuretics.
  • Digoxin (for heart conditions).
  • Anticoagulants (for blood clots).
  • Rifampicin (for tuberculosis).
  • Ciclosporin (immune suppressant).

Always disclose your full medical history and any medications you’re taking before starting Trimethoprim.

Alcohol and Trimethoprim

You can drink alcohol while taking Trimethoprim; however, excessive consumption may increase the risk of side effects like dizziness. It’s advisable to drink in moderation.

Can I Buy Trimethoprim Online?

Yes, you can buy Trimethoprim safely and securely online from Medihealth Direct. Here’s how:

  1. Complete a Consultation:
    • Answer a few medical questions to ensure Trimethoprim is safe and appropriate for you.
  2. ****Healthcare ProfessionalApproval:
    • Your consultation is reviewed by a registered healthcare professional.
  3. Order & Delivery:
    • Once approved, your order will be dispatched with next-day delivery.

All orders are sent in discreet packaging, ensuring your privacy.

FAQs About Trimethoprim

What is Trimethoprim used for?

Trimethoprim is primarily used to treat and prevent urinary tract infections (UTIs).

How long does Trimethoprim take to work?

Symptoms often improve within a few hours, but it may take a few days to see full results. Complete the full course for maximum effectiveness.

Can you drink alcohol with Trimethoprim?

Yes, moderate alcohol consumption is safe while taking Trimethoprim.

Should Trimethoprim be taken with food?

Trimethoprim can be taken with or without food.

Can you take paracetamol with Trimethoprim?

Yes, paracetamol can be taken alongside Trimethoprim to manage discomfort.

Can pregnant women take Trimethoprim?

No, Trimethoprim is not recommended during pregnancy due to potential harm to the baby.

Can Trimethoprim and Nitrofurantoin be taken together?

No, do not take both antibiotics simultaneously unless directed by your healthcare professional.

Is Trimethoprim available over the counter?

No, Trimethoprim requires a prescription.

Transparent pricing

The price you see is the price you pay, no hidden fees.

Price
£8.99
What's included
  • Online consultation & prescription from a UK clinician
  • Discreet, tracked deliveryRoyal Mail tracked delivery is £2.99 per order, added at checkout.
  • Ongoing clinical support from our pharmacy team

You're only charged after a prescriber approves your consultation. If it's not right for you, you're not charged.

Delivery & packaging

  • Royal Mail tracked delivery
    £2.99 per order
  • Next-day
    Order by 2pm Monday to Friday and an approved order is dispatched the same day for next-working-day delivery.
  • Packaging
    Every parcel is plain and unbranded; temperature-sensitive medicines travel in insulated cold-chain packaging at no extra cost.

Questions before you start?

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