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Pharmacy, clinic and prescribers based in Greater Manchester.
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Variety of delivery options including next day & free delivery.
Pharmacy, clinic and prescribers based in Greater Manchester.
Start your treatment with a quick and free online consultation.
Fill in a quick online consultation for our licensed pharmacists to review.
Our pharmacists will review your treatment to ensure it’s suitable.
Your treatment will be delivered to your door quickly & discreetly.
| Medication Name | Alka-Seltzer XS |
| Type and Form of Medicine | Effervescent tablets |
| What it Does | Relieves headache, migraine, cold & flu symptoms, sore throat, fever, and aches & pains |
| Active Ingredients | Aspirin, paracetamol, caffeine |
| Strength | Each tablet contains aspirin 267mg, paracetamol 133mg, caffeine 40mg |
| Size | 20 effervescent tablets |
| Patient Information Leaflet | Click here |
Alka-Seltzer XS is an over-the-counter pain relief medicine combining aspirin, paracetamol and caffeine in an effervescent tablet. It provides short-term relief from headache, migraine, cold & flu symptoms, sore throat, fever, rheumatic and muscular pain, dental pain and period pain.
The effervescent tablets dissolve in water for easier absorption.
Suitable for adults and children over 16 years.
Do not take if you:
Like all medicines, Alka-Seltzer XS can cause side effects. Stop taking and seek help if you develop:
Other effects may include indigestion, nausea or ringing in the ears. For a full list, see the patient information leaflet.
Active Ingredients: Aspirin 267mg, paracetamol 133mg, caffeine 40mg per tablet.
Other Ingredients: Citric acid, sodium bicarbonate, sodium carbonate, sodium benzoate (E211), sodium saccharin and other excipients.
Short-term relief of pain and fever, including headache, migraine, cold & flu symptoms, sore throat, muscular and rheumatic aches, dental pain and period pain.
Two tablets dissolved in half a glass (about 100 ml) of water every 4 hours if needed. Do not take more than 8 tablets in 24 hours.
No. Do not take with any other paracetamol-containing medicines.
No for children under 16 years. It is for adults and over-16s only.
Do not take unless your doctor advises you to.
Yes. Each tablet contains aspirin 267 mg and caffeine 40 mg (plus paracetamol 133 mg).
Speak to your doctor or pharmacist first. Alka-Seltzer XS contains sodium.
It’s for short-term use. Do not use for more than 3 days without medical advice.
Page content authored by Muhammad, last reviewed by Amjad Khan on 15th September 2025.
