Antibiotic Treatment for Sinusitis

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  • NICE-recommended first-choice antibiotic for acute sinusitis
  • Effective treatment for persistent bacterial sinusitis symptoms
  • Standard adult dose of 500mg four times a day for five days
  • Easy to take tablet form with clear dosage instructions
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    Delivered in secure, plain packaging with tracked delivery from just £2.99

  • 100% UK-based pharmacy

    Our team of doctors and pharmacists, and our support staff, are all UK-based.

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When sinus pain strikes it can leave you feeling low. Your face throbs, your head aches and your nose feels stuffy, making it hard to concentrate on everyday tasks. If it’s viral it usually clears up on its own in a few days. But if your symptoms last for ten or more days without improvement it’s more likely to be bacterial sinusitis. This is when Antibiotic Treatment for Sinusitis can help.

It's the first-choice antibiotic treatment recommended by NICE to help relieve acute sinusitis and get you back to normal fast. So, if you’ve been suffering with sinusitis for a while now, it’s time to get in touch and speak to one of our healthcare professionals.

Antibiotic Treatment for Sinusitis is only available on prescription so our clinical team will ask you a few questions first and make sure it’s the right treatment for you. Once approved, we will dispatch your medication straight away, delivering it directly to your door so that you can start feeling better as quickly as possible.

Who Is Antibiotic Treatment for Sinusitis Suitable For?

Suitable for age: 18+
Suitable for pregnancy?No
Suitable for breastfeeding?No
Maximum per order:1
Consultation required?Yes

This treatment requires an online consultation for review by our medical team. The decision to supply the specific treatment and quantity requested will be based on whether our medical team are satisfied that it will be safe, appropriate, and effective.

Generic Treatment?Yes

This is a generic medicine and the manufacturer of the treatment supplied may vary from the treatment image above, depending on availability. Please contact us once you've placed your order if you require a specific brand and we will do our best to accommodate your request.

Antibiotic Treatment for Sinusitis Table

Works by
Killing this bacteria responsible for the infection
Effective within
10 days
Pack size
28 tablets (two packs per course of treatment)
Generic
Yes
Use with alcohol
In moderation

About Antibiotic Treatment for Sinusitis

Antibiotic Treatment for Sinusitis is a penicillin-based antibiotic used to treat certain infections, including acute bacterial sinusitis. If you have a sinus infection which hasn’t cleared up after ten or more days, it could indicate it’s a bacterial rather than a viral infection, and our UK clinical team may prescribe Antibiotic Treatment for Sinusitis to get rid of it.

It’s an effective antibiotic and considered the first-choice treatment for bacterial sinusitis, helping to reduce inflammation and ease symptoms like facial pain and congestion.

How Does Antibiotic Treatment for Sinusitis Work?

Bacterial sinusitis occurs when bacteria infect your sinus cavities - the air-filled spaces behind your nose and face. This causes inflammation, congestion, pressure and pain in your head and face.

Antibiotic Treatment for Sinusitis works by directly attacking these bacteria and supporting your immune system. It blocks their ability to produce strong cell walls which they need to survive. Without proper cell walls the bacteria weaken, break apart and die.

How To Take Antibiotic Treatment for Sinusitis

NICE recommends you should take two 250mg tablets four times a day for five days on an empty stomach. This should be spaced evenly throughout the day, for example first thing in the morning, at midday, later afternoon and before bedtime.

Avoid taking at mealtimes because taking it with food can make it less effective. Instead, take it either 30 minutes before you eat or two hours after you’ve eaten.

Side Effects

Like any medication, Antibiotic Treatment for Sinusitis can cause side effects although not everyone will experience them. Common side effects include nausea, being sick, diarrhoea, thrush or inflammation of the vaginal area and soft stools. If you’re worried about anything related to your treatment, speak to our healthcare professionals.

However, if you experience severe diarrhoea, vomiting, signs of an allergic reaction such as difficulty breathing, swelling of the face, lips and throat, or unusual bleeding or bruising you should stop taking the medication and seek medical attention immediately.

Warnings

While Antibiotic Treatment for Sinusitis is an effective antibiotic it’s not suitable for everyone. You should not take it if you’re allergic to penicillin or other antibiotics.

If you have kidney problems or other conditions which affect your metabolism it’s also not suitable. Some medications, such as methotrexate or blood thinners, may interact with Antibiotic Treatment for Sinusitis and affect how it works. During your consultation, tell our healthcare professionals about any allergies, medical history, or other medicines you’re taking before starting treatment so we can ensure it’s safe for you.

Antibiotic Treatment for Sinusitis reviews

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As a UK-based pharmacy, we follow the same strict regulatory standards as any physical pharmacy. Our expert clinical team and services are overseen by multiple regulatory bodies to ensure your care is always safe, secure and confidential.

Run by experienced healthcare professionals

We think accessing healthcare should be easy. Whether we’re fulfilling NHS prescriptions or helping people find the right treatments, we aim to offer our customers dependable, economical and convenient access to medicines with a personal and discreet service.

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Published 27 November 2025
Updated 27 November 2025
Next review 10 September 2026