What’s the difference between Alka-Seltzer effervescent tablets and ReliefChews?

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.

What temperature of water should I use to dissolve Alka-Seltzer tablets?

The best temperature is room temperature. Cold water will slow down dissolution and warm water can make it foam excessively.

Is Alka-Seltzer the same as baking soda?

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.

What makes Alka-Seltzer fizz?

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.

What are the active ingredients in Alka-Seltzer ReliefChews?

ReliefChews contain calcium carbonate (antacid). Heartburn+Gas Relief Chews contain calcium carbonate (antacid) and simethicone (antigas).

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Extra Strength Heartburn Relief Effervescent Antacid Tablets, Fast Indigestion Relief, 36Ct

Extra Strength Heartburn Relief Effervescent Antacid Tablets, Fast Indigestion Relief, 36Ct

Product ID: 774423008

Details

Active Ingredients
Anhydrous acid
Brand
Alka-Seltzer
Item dimensions L x W x H
3.19 x 1.93 x
Specific Uses For Product
Heartburn Sour

⚡Fast-acting relief in seconds

🎒36 portable sachets for on-the-go

🧪Neutralizes 99% excess acid

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Description

🔥 Fast fizz, fast fix — beat heartburn before it beats you!

TRUSTED LEGACY - Backed by over 90 years of proven heartburn relief, a brand you can count on.
EFFERVESCENT POWER - Dissolves quickly in water for fast absorption—no residue, just pure relief.
ASPIRIN FREE FORMULA - Gentle on your system with no aspirin, just effective acid neutralization.
TRAVEL READY CONVENIENCE - 36 individually packed tablets fit perfectly in your bag or desk drawer for instant relief anytime, anywhere.
RAPID ACID NEUTRALIZATION - Starts working within seconds to neutralize 99% of excess stomach acid, so you never miss a beat.

Alka-Seltzer Extra Strength Heartburn Relief Effervescent Tablets deliver rapid indigestion and heartburn relief by neutralizing 99% of excess stomach acid within seconds. Each travel-friendly sachet contains two aspirin-free tablets that dissolve quickly in water, making it easy to take on the go. Trusted for over 90 years, this 36-count pack ensures you’re always prepared to tackle acid indigestion with a fast-acting, reliable formula.

Specifications

ASIN	B0FF4KJC5B
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	#3,918 in Health & Household ( See Top 100 in Health & Household ) #42 in Antacids
Brand Name	Alka-Seltzer
Coin Variety 1	Extra Strength
Customer Reviews	4.8 4.8 out of 5 stars (1,068)
Date First Available	June 23, 2025
Flavor	unflavored
Global Trade Identification Number	00016500603214
Item Dimensions	3.19 x 1.93 x 4.02 inches
Item Form	Tablet
Manufacturer	Alka-Seltzer
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 Dimensions	3.19 x 1.93 x 4.02 inches; 5.4 ounces
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

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14507CFA

Duties & taxes included

In stock

Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Senegal.

Secure transaction

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