---
product_id: 774423008
title: "Alka-Seltzer Extra Strength Heartburn Relief Effervescent Antacid Tablets, Fast Indigestion Relief, 36Ct"
brand: "alka-seltzer"
price: "€ 11.74"
currency: EUR
in_stock: true
reviews_count: 8
category: "Alka Seltzer"
url: https://www.desertcart.ie/products/774423008-alka-seltzer-extra-strength-heartburn-relief-effervescent-antacid-tablets-fast
store_origin: IE
region: Ireland
---

# Fast-acting relief in seconds 36 portable sachets for on-the-go Neutralizes 99% excess acid Alka-Seltzer Extra Strength Heartburn Relief Effervescent Antacid Tablets, Fast Indigestion Relief, 36Ct

**Brand:** alka-seltzer
**Price:** € 11.74
**Availability:** ✅ In Stock

## Summary

> 🔥 Beat the burn before it burns you! ⚡

## Quick Answers

- **What is this?** Alka-Seltzer Extra Strength Heartburn Relief Effervescent Antacid Tablets, Fast Indigestion Relief, 36Ct by alka-seltzer
- **How much does it cost?** € 11.74 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/774423008-alka-seltzer-extra-strength-heartburn-relief-effervescent-antacid-tablets-fast)

## Best For

- alka-seltzer enthusiasts

## Why This Product

- Trusted alka-seltzer brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Trusted Legacy:** Over 90 years of proven heartburn relief reliability
- • **Effervescent Ease:** Dissolves quickly in water—no residue, just fast relief
- • **Precision Dosage Packets:** 36 travel-friendly sachets keep relief always within reach 🎒
- • **Rapid Acid Neutralization:** Starts working within seconds to banish heartburn fast ⚡
- • **Powerful Extra Strength Formula:** Combines Anhydrous citric acid & Sodium bicarbonate for max effect 🧪

## Overview

Alka-Seltzer Extra Strength Heartburn Relief Effervescent Tablets deliver fast, effective relief by neutralizing 99% of excess stomach acid within seconds. Packaged in 36 convenient, portable sachets, this aspirin-free formula combines Anhydrous citric acid and Sodium bicarbonate to tackle heartburn, indigestion, and upset stomach with trusted efficacy since 1931.

## Description

Don’t let indigestion and heartburn interrupt your day, Alka-Seltzer Extra Strength Heartburn Relief tablets start neutralizing excess stomach acid in seconds. Drop 2 antacid tablets in water to get fast indigestion relief that neutralizes 99% of excess acid. With a dose per sachet, Alka-Seltzer Heartburn Relief Extra Strength tablets are convenient and portable so relief is always within reach, from the pantry, to your pocket. These tablets contain the active ingredients Anhydrous citric acid and Sodium bicarbonate. To use, fully dissolve antacid tablets in 4 ounces of water before taking. Adults and children 12 years old and over can take 2 tablets every 4 hours as needed, or as directed by a doctor. Do not take more than 8 tablets in 24 hours.

Review: Works Great! - The longer I'm married the more of this I need! Works great!
Review: Something for upset stomach and heartburn only - What can I say : It’s Alka-Seltzer for heartburn and indigestion only. It has no Acetaminophen or Aspirin or anything else in it. So it’s not your choice if you’re expecting relief like normal Alka-Seltzer. But it works great for what it’s formulated for.

## Features

- Fast Indigestion & Heartburn Relief: Alka-Seltzer Extra Strength Heartburn Relief Effervescent Tablets have you covered with fast acid indigestion relief and heartburn.
- Nothing Works Faster: Quickly dissolves and starts working in seconds to neutralize 99% of excess acid
- Portable Sachets: This travel-friendly pack includes 36 individual packets of antacid tablets. Designed for easy storage, so quick heartburn relief is always within reach
- Easy To Use: Fully dissolve 2 tablets in 4oz of water, fizz it and drink it. You do not have to drink any of the residue that may be on the bottom of the glass. The medicines of Alka-Seltzer Extra Strength Heartburn Relief are in the water
- Does Not Contain Aspirin: These effervescent antacid tablets contain the active ingredients Anhydrous citric acid and Sodium bicarbonate
- Trusted For Over 90 Years: Your go-to brand for fast heartburn relief since 1931

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0FF4KJC5B |
| Active Ingredients | Anhydrous citric acid, Sodium bicarbonate |
| Additional Features | Fast-Acting, Targeted |
| Age Range Description | Adult |
| Allergen Information | Allergen-Free |
| Best Sellers Rank | #4,578 in Health & Household ( See Top 100 in Health & Household ) #48 in Antacids |
| Brand | Alka-Seltzer |
| Brand Name | Alka-Seltzer |
| Coin Variety 1 | Extra Strength |
| Customer Reviews | 4.8 out of 5 stars 317 Reviews |
| Flavor | unflavored |
| Global Trade Identification Number | 00016500603214 |
| Item Dimensions | 3.19 x 1.93 x 4.02 inches |
| Item Form | Tablet |
| Item dimensions L x W x H | 3.19 x 1.93 x 4.02 inches |
| Manufacturer | Alka-Seltzer |
| Net Content Count | 36 Count |
| Number of Items | 36 |
| Product Benefits | Heartburn Relief, Sour Stomach Relief, Acid Indigestion Relief, Upset Stomach Relief, Fast-Acting, Multi-Symptom Relief Product Benefits Heartburn Relief, Sour Stomach Relief, Acid Indigestion Relief, Upset Stomach Relief, Fast-Acting, Multi-Symptom Relief See more |
| Special Ingredients | Extra Strength Active Ingredients |
| Specific Uses For Product | Heartburn, Sour Stomach, Acid Indigestion, Upset Stomach |
| Target Audience | Unisex-Adults |
| UPC | 016500603214 |
| Unit Count | 36 Count |

## Product Details

- **Active Ingredients:** Anhydrous citric acid, Sodium bicarbonate
- **Brand:** Alka-Seltzer
- **Item dimensions L x W x H:** 3.19 x 1.93 x 4.02 inches
- **Specific Uses For Product:** Heartburn, Sour Stomach, Acid Indigestion, Upset Stomach

## Images

![Alka-Seltzer Extra Strength Heartburn Relief Effervescent Antacid Tablets, Fast Indigestion Relief, 36Ct - Image 1](https://m.media-amazon.com/images/I/811LKXL0IuL.jpg)
![Alka-Seltzer Extra Strength Heartburn Relief Effervescent Antacid Tablets, Fast Indigestion Relief, 36Ct - Image 2](https://m.media-amazon.com/images/I/71QgqLXSAYL.jpg)
![Alka-Seltzer Extra Strength Heartburn Relief Effervescent Antacid Tablets, Fast Indigestion Relief, 36Ct - Image 3](https://m.media-amazon.com/images/I/71Av1oxbA0L.jpg)
![Alka-Seltzer Extra Strength Heartburn Relief Effervescent Antacid Tablets, Fast Indigestion Relief, 36Ct - Image 4](https://m.media-amazon.com/images/I/71w++avsE6L.jpg)
![Alka-Seltzer Extra Strength Heartburn Relief Effervescent Antacid Tablets, Fast Indigestion Relief, 36Ct - Image 5](https://m.media-amazon.com/images/I/81TwcSGhN6L.jpg)

## Questions & Answers

**Q: What’s the difference between Alka-Seltzer effervescent tablets and ReliefChews?**
A: Both effervescent tablets and ReliefChews are portable and deliver fast multi-symptom relief. Effervescent tablets dissolve in water for fizzy, refreshing relief you can hear, see and feel. ReliefChews are delicious and chewy.

**Q: What temperature of water should I use to dissolve Alka-Seltzer tablets?**
A: The best temperature is room temperature. Cold water will slow down dissolution and warm water can make it foam excessively.

**Q: Is Alka-Seltzer the same as baking soda?**
A: Not exactly. Baking soda (sodium bicarbonate) does not contain anhydrous citric acid, the main active ingredient in Alka-Seltzer effervescent tablets that relieve heartburn and acid indigestion.

**Q: What makes Alka-Seltzer fizz?**
A: Alka-Seltzer contains citric acid and sodium bicarbonate (baking soda). When you drop the tablet in water, the acid and the baking soda react – this produces fizz.

**Q: What are the active ingredients in Alka-Seltzer ReliefChews?**
A: ReliefChews contain calcium carbonate (antacid). Heartburn+Gas Relief Chews contain calcium carbonate (antacid) and simethicone (antigas).

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works Great!
*by R***1 on February 8, 2026*

The longer I'm married the more of this I need! Works great!

### ⭐⭐⭐⭐⭐ Something for upset stomach and heartburn only
*by L***R on January 19, 2026*

What can I say : It’s Alka-Seltzer for heartburn and indigestion only. It has no Acetaminophen or Aspirin or anything else in it. So it’s not your choice if you’re expecting relief like normal Alka-Seltzer. But it works great for what it’s formulated for.

### ⭐⭐⭐⭐⭐ Alka-Seltzer for heartburn
*by J***D on December 14, 2025*

This is my favorite for when I get heartburn. Great price, quick shipping. Just what I needed.

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-02-14*