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Doxycycline For Sinusitis 100mg contains doxycycline hyclate 100mg, a tetracycline antibiotic used to treat bacterial sinus infections. It works by stopping the growth of bacteria responsible for sinusitis, helping to relieve symptoms such as facial pressure, nasal congestion, headache, and thick nasal discharge.
Doxycycline is commonly prescribed when sinusitis is caused by a bacterial infection and is suitable for adults and adolescents aged 12 years and over. It is a prescription-only medicine supplied in capsule form.
| Medication Name | Doxycycline 100mg Capsules |
| Active Ingredient | Doxycycline (as doxycycline hyclate) 100mg |
| Other Ingredients | Hypromellose, sodium lauryl sulphate, microcrystalline cellulose, magnesium stearate, gelatin, titanium dioxide (E171), Brilliant Blue (E133), iron oxide yellow (E172) |
| Medication Form | Hard capsules |
| Used to Treat | Bacterial sinusitis and other bacterial infections |
| Available Strength | 100mg |
| Who Can Use It | Adults and adolescents aged 12 years and over |
| Prescription Required? | Yes – Prescription Only Medicine (POM) |
| Patient Information Leaflet | Doxycycline Capsules – Patient Information Leaflet |
Doxycycline 100mg is used to treat bacterial sinusitis by preventing bacteria from producing essential proteins needed for growth. This helps clear the infection and reduce inflammation within the sinuses.
Doxycycline is suitable for adults and adolescents aged 12 years and over.
Do not take Doxycycline if you:
Speak to a healthcare professional before taking this medicine if you:
Alcohol should be avoided as it may reduce the effectiveness of the medicine.
Common side effects:
Uncommon:
Rare but serious:
Page content authored by Amjad Khan, last reviewed by Mr Muhammad on 2nd February 2026.
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