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Clarithromycin For Sinusitis

  • Macrolide antibiotic used to treat bacterial sinus infections
  • Helps relieve sinus pain, pressure, and congestion
  • Prescription-only treatment for adults and children 12+
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Fast & Free Delivery Options

Variety of delivery options including next day & free delivery.

100% UK-based Pharmacy

Pharmacy, clinic and prescribers based in Greater Manchester.

Free Online Consultations

Start your treatment with a quick and free online consultation.

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About Clarithromycin For Sinusitis 500mg

Clarithromycin For Sinusitis 500mg contains clarithromycin 500mg, a macrolide antibiotic used to treat bacterial sinus infections. It works by stopping the growth of bacteria responsible for sinus inflammation, congestion, facial pain, and pressure.

Clarithromycin is prescribed when sinusitis is caused by bacterial infection rather than viruses. It helps clear infection, relieve symptoms, and prevent complications when taken as directed for the full course.

This medicine is suitable for adults and children aged 12 years and over and is available only with a prescription following an online consultation.

Medication Name Clarithromycin 500mg Tablets
Active Ingredient Clarithromycin 500mg
Other Ingredients Microcrystalline cellulose, croscarmellose sodium, magnesium stearate, hypromellose, titanium dioxide (E171), propylene glycol, and iron oxide yellow (E172)
Medication Form Film-coated tablets
Used to Treat Bacterial sinusitis and other bacterial infections
Who Can Use It Adults and children aged 12 years and over
Prescription Required? Yes – Prescription Only Medicine (POM)
Patient Information Leaflet Clarithromycin Tablets –
Patient Information Leaflet

What Is Clarithromycin Used For?

Clarithromycin is used to treat bacterial infections including sinusitis, throat infections, chest infections such as bronchitis and pneumonia, and certain skin infections. It is also used in combination therapy to treat Helicobacter pylori infection associated with stomach ulcers.

Who Is Clarithromycin Suitable For?

Clarithromycin is suitable for adults and children aged 12 years and over.

Do not take Clarithromycin if you:

  • Are allergic to clarithromycin or other macrolide antibiotics
  • Have severe liver disease with kidney problems
  • Have heart rhythm disorders or long QT syndrome
  • Are taking medicines such as ergotamine, simvastatin, lovastatin, cisapride, domperidone, pimozide, colchicine, or oral midazolam

Speak to a healthcare professional before use if you:

  • Have heart, liver, or kidney problems
  • Are pregnant or breastfeeding
  • Have low potassium or magnesium levels
  • Are taking blood thinners, statins, diabetes medicines, or corticosteroids

How to Take Clarithromycin 500mg

  1. Take one tablet twice daily as prescribed.
  2. Swallow whole with water; do not crush or chew.
  3. Take doses evenly spaced throughout the day.
  4. Complete the full course even if symptoms improve.

Do not take a double dose if you miss one.

Possible Side Effects of Clarithromycin

Common side effects:

  • Nausea, vomiting, diarrhoea
  • Stomach pain or indigestion
  • Changes in taste
  • Headache

Uncommon side effects:

  • Dizziness or drowsiness
  • Thrush (oral or vaginal)
  • Skin rash or itching

Rare but serious:

  • Severe allergic reactions
  • Liver inflammation or jaundice
  • Severe or prolonged diarrhoea
  • Abnormal heart rhythms

Warnings and Precautions

  • Do not stop treatment early, even if you feel better.
  • Avoid driving if you feel dizzy or drowsy.
  • Inform your doctor of all medicines you are taking.

Storage Instructions

  • No special storage conditions required.
  • Store in original packaging.
  • Keep out of sight and reach of children.

Clarithromycin For Sinusitis Reviews

Our Experienced UK-based Pharmacy Team

Clinical Consultant
MUDr, MRCEM, EBCEM, FRCEM
GMC no. 7176414

Pharmacist
MPharm
GPhC no. 2065469

Pharmacist
MPharm
GPhC no. 2046514

Page content authored by Amjad Khan, last reviewed by Mr Muhammad on 2nd February 2026.

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