Alexi
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Reviewed on Sep 04, 2023. by Dr Alexandra Cristina Cowell Writer & Clinical Content Reviewer Next review due on September 05, 2026.
Dr Alexandra Cristina Cowell

Last updated on Sep 04, 2023.

Product info

  • Alexi (fosfomycin) is an antibiotic sachet used for urinary tract infections.

  • Fosfomycin kills the bacteria (E.coli) that causes infections.
  • It dissolves in water and only requires one dose for most UTIs.

Price checker

3g
£42.95
  • Prices include:
    Express shipping

    24 hour shipping by secure courier.

  • Consultation + Access to our clinicians

    Ask our experts anything you like, any time you want.

  • Total
    £42.95
    Save £0.00 each order
Alexi Fosfomycin

What is Alexi?

Alexi is an antibiotic used to treat bacterial infections, such as urinary tract infections (UTIs) in women. It comes as a sachet you dissolve in water, and you only need to take one dose to clear it.

UTIs are one of the most common bacterial infections worldwide. Most UTI cases are uncomplicated, and don’t always need treatment as they can resolve on their own.[1] But taking antibiotics like Alexi can speed up the treatment process and improve your symptoms quicker.

How does Alexi work?

Alexi contains fosfomycin, which is an antibiotic that kills many bacteria including E.coli, the most common cause of UTIs. It works by inhibiting the enzymatic reaction that produces peptidoglycan – an important component in making bacterial cell walls.[2] Without a cell wall, bacteria cannot grow and reproduce.

Furthermore, fosfomycin stops the bacteria from sticking to your urinary cell walls. Normally bacteria adhere to multiply, leading to infections. But without this, the bacteria can be easily excreted through urine, reducing the likelihood of infections.[2]

Treated trusted sources:

  1. Flores-Mireles, A. L., Walker, J. N., Caparon, M., & Hultgren, S. J. (2015). Urinary tract infections: Epidemiology, mechanisms of infection and treatment options. Nature reviews. Microbiology, 13(5), 269.
  2. Falagas, M. E., Vouloumanou, E. K., Samonis, G., & Vardakas, K. Z. (2016). Fosfomycin. Clinical Microbiology Reviews, 29(2), 321-347.
treated.com This page was written by The Treated Content Team.
Dr Alexandra Cristina Cowell 1218322
This page was medically reviewed by Dr Alexandra Cristina Cowell on September 05, 2023. Next review due on September 05, 2026.

How we source info.

When we present you with stats, data, opinion or a consensus, we’ll tell you where this came from. And we’ll only present data as clinically reliable if it’s come from a reputable source, such as a state or government-funded health body, a peer-reviewed medical journal, or a recognised analytics or data body. Read more in our editorial policy.

Alexi Fosfomycin

How to take Alexi for UTIs

To treat uncomplicated UTIs, only one sachet and dose is needed. To take it, follow the instructions below.

  • Take the medication on an empty stomach. It’s best to take it before going to bed after emptying the bladder.
  • Pour the granules into a glass containing 50-75ml of water. Dissolve the contents by stirring
  • After it’s dissolved, drink it immediately.

If you accidentally took more than the recommended amount, contact your doctor or pharmacist for medical guidance.

Are there different doses of Alexi?

There’s only one dose of Alexi available, a 3g sachet. Usually only one dose is needed to clear the infection.

treated.com This page was written by The Treated Content Team.
Dr Alexandra Cristina Cowell 1218322
This page was medically reviewed by Dr Alexandra Cristina Cowell on September 05, 2023. Next review due on September 05, 2026.

How we source info.

When we present you with stats, data, opinion or a consensus, we’ll tell you where this came from. And we’ll only present data as clinically reliable if it’s come from a reputable source, such as a state or government-funded health body, a peer-reviewed medical journal, or a recognised analytics or data body. Read more in our editorial policy.

Alexi Fosfomycin

Alexi isn’t suitable for everyone, and there are some things that you need to be aware of when using it.

Here’s all the official info on it. If anything is unclear, let our clinicians know, and they can talk with you about it.

Alexi Fosfomycin

FAQ: Alexi

Have something specific you want to know? Search our info below, or ask our experts a question if you can’t find what you’re looking for.

How is Alexi different from other treatments for UTIs?

Answer:
Unlike other antibiotics, Alexi is taken in liquid form, and only for one day. This could be better for you if you struggle to swallow tablets and don't like long treatment plans. Alexi is most similar to Monuril, as both treatments contain the same active ingredients in the same form. The only real difference between the two is their name and the company that produces them. They may also differ in appearance and price.

Other antibiotics for UTIs include MacroBID and Selexid. They come as tablets containing different active ingredients and are taken for a different number of days. (Selexid is a 3-day course and MacroBID is a 7-day course.)

Trimethoprim is another liquid antibiotic. It’s suitable for children or people who have difficulty swallowing tablets. For adults, the recommended dosage is four 5ml spoonfuls taken twice daily.

The one you choose is mostly up to you, but antibiotics work differently from person to person, depending on the type of bacteria you have. For example, if you have bacteria resistant to fosfomycin, Alexi won't be effective for you.

What are the side effects of Alexi?

Answer:
As with all antibiotics, Alexi can cause side effects that might affect some people. Common side effects include:

  • headaches or dizziness;

  • diarrhoea;

  • nausea;

  • indigestion or abdominal pain;

  • infection of the female genital organs.

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Similar but different

UTI: Here are our other options.

Macrobid Blister Pack UK

MacroBID

Nitrofurantoin

Effective antibiotic capsule that you take just twice a day.

100mg
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Generic

Nitrofurantoin

Nitrofurantoin

Widely used generic antibiotic available in two forms. Can clear UTIs in 7 days.

50mg
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Trimethoprim Blister containing 10 round medicine tablets

Trimethoprim

Trimethoprim

Clears persistent UTIs. 3 day course for women, 7 day course for men.

200mg
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