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

🧪Neutralizes 99% excess acid

🧳36 portable sachets for on-the-go

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€ 15.66

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In stock

Sold byAmazon ItalyDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Fast fizz, fast fix — relief that keeps up with your hustle!

LEGACY OF TRUST - Backed by over 90 years of proven heartburn relief, a staple for professionals who demand reliability.
EFFERVESCENT POWER - Dissolves quickly in water for fast absorption without any residue—just fizz, sip, and feel better.
ASPIRIN FREE FORMULA - Gentle on your system with no aspirin, making it a trusted choice for sensitive stomachs.
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. Packaged in 36 portable sachets, these aspirin-free tablets dissolve quickly in water for convenient, on-the-go use. Trusted for over 90 years, this formula combines anhydrous citric acid and sodium bicarbonate to provide fast, effective relief for adults and teens 12+.

Specifications

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	#4,721 in Health & Household ( See Top 100 in Health & Household ) #55 in Antacids
Brand	Alka-Seltzer
Brand Name	Alka-Seltzer
Coin Variety 1	Extra Strength
Customer Reviews	4.8 out of 5 stars 600 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

Reviews

S**2

6.04.2026

V**Z

16.04.2026

A**R

31.03.2026

R**S

18.04.2026

V**O

9.04.2026

V**Y

13.04.2026

C**M

12.04.2026

A**Z

17.04.2026

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