Shop Alka-Seltzer at withaid, a UK based and regulated online pharmacy. This brand page brings together Alka-Seltzer fizzy (effervescent) tablets that dissolve in water—ideal if you prefer a soluble format. Compare Alka-Seltzer Original Aspirin in 10 or 20 tablet packs, or choose Alka-Seltzer XS tablets, with clear pricing and product information to help you pick the most suitable option.
Most shoppers arrive with a symptom-led goal—buying Alka-Seltzer for short-term support with indigestion or heartburn after food and drink, or for everyday aches and headaches. Because formulations can differ, the safest way to choose is to check the active ingredients on each product page and read the patient information leaflet before use. This is especially important if you take regular medicines, have asthma, stomach problems, kidney issues, or you’re pregnant or breastfeeding.
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Why choose Alka-Seltzer
- Effervescent, soluble format: dissolves in water for a fizzy, drinkable option (use as directed).
- Easy pack-size choice: 10 or 20 tablets, plus an XS option to compare.
- Symptom-led shopping: jump to heartburn, indigestion or headache categories to compare alternatives.
- Trusted pharmacy standards: UK based and regulated pharmacy with clear regulatory details.
- Convenient delivery: free delivery over qualifying spend, sent via Royal Mail in discreet packaging.
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FAQs
What is Alka-Seltzer?
Alka-Seltzer is an effervescent (fizzy) tablet that’s dissolved in water. Products can contain different ingredients, so check each product page and the pack to confirm the formulation and intended use.
What’s the difference between Alka-Seltzer Original and Alka-Seltzer XS?
They are different products with different formulations. Compare the active ingredients and the indications shown on each product page, then read the patient information leaflet for directions and suitability.
How do I take Alka-Seltzer effervescent tablets?
Effervescent tablets are designed to dissolve fully in water before you drink the solution. Follow the label and patient information leaflet, and do not exceed the stated dose.
Can I take Alka-Seltzer with ibuprofen or other painkillers?
Check ingredients before combining medicines. If your Alka-Seltzer product contains aspirin, using it with other anti-inflammatory painkillers (such as ibuprofen) may increase the risk of side effects. Ask a pharmacist if you’re unsure what’s appropriate.
Can I take Alka-Seltzer alongside cold & flu remedies?
Many cold and flu products contain pain relief ingredients. To avoid taking duplicate or interacting medicines, check the active ingredients on both products and ask a pharmacist for advice if you’re unsure.
Which pack size should I choose: 10 or 20 tablets?
A 10 tablet pack can suit occasional use, while a 20 tablet pack may be better value if you use it more regularly. Always check the expiry date.
When should I seek medical advice?
Speak to a pharmacist, contact your GP, or call NHS 111 if symptoms are severe, worsening, persistent or recurring, or if you’re pregnant or breastfeeding. Seek urgent help for chest pain, breathing difficulties, severe allergic symptoms, vomiting blood, black stools, or rapidly worsening symptoms.
Safety information: Always read the label and patient information leaflet before use and use medicines only as directed. This page is general information and does not replace advice from a pharmacist or GP. If you take regular medicines, have a long-term condition, or you’re unsure which Alka-Seltzer product is suitable, ask a pharmacist before purchase.
