Fast Heartburn + Pain Relief: Alka-Seltzer's 2-in-1 effervescent aspirin + antacid tablets for relief of heartburn with pain symptoms | Nothing Works Faster: Dissolves quickly in water and starts working fast to relieve pain and neutralize stomach acid for quick heartburn and acid indigestion relief | Contains aspirin: Provides fast relief of pain symptoms including headaches, back pain, muscle pain, and body pain | Easy-to-Carry Sachets: This travel-friendly pack includes 36 individual packets of aspirin + antacid tablets. Designed for easy storage, so quick pain + heartburn relief are always within reach | How 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 Heartburn + Pain Relief are in the water | Trusted for Over 90 Years: Your go-to brand for fast pain and heartburn relief since 1931