INGREDIENTS: Sugar, Corn Syrup, Water, Tricalcium Phosphate, Pectin; Less than 2% of: Citric Acid, Colors (Vegetable Juices), Malic Acid, Melatonin, Natural Flavor, Sodium Citrate.

Alka-Seltzer is a combination of three medications: Citric acid and sodium bicarbonate are antacids that work to relieve indigestion and upset stomach by neutralizing the acid in your stomach.

This medication is used to treat symptoms caused by too much stomach acid such as heartburn, upset stomach, or indigestion. It is an antacid that works by lowering the amount of acid in the stomach. Check the ingredients on the label even if you have used the product before.

Serious side effects Signs of high calcium levels like weakness, confusion, feeling tired, headache, upset stomach and throwing up, constipation, or bone pain.

In addition to its usefulness against heartburn, Alka-Seltzer is also marketed to provide relief for a number of other conditions and ailments. These include "everything from minor aches and pains to fever, inflammation and even hangovers," says Messer.

Take this medication by mouth with or without food or as directed by your doctor. If stomach upset occurs, it may help to take this medication with food or milk. Drink plenty of fluids when you use this medication unless otherwise directed by your doctor.

for the temporary relief of:

• heartburn, acid indigestion, and sour stomach when accompanied with headache or body aches and pains.
• upset stomach with headache from overindulgence in food or drink.
• headache, body aches, and pain alone.

In addition to its usefulness against heartburn, Alka-Seltzer is also marketed to provide relief for a number of other conditions and ailments. These include "everything from minor aches and pains to fever, inflammation and even hangovers," says Messer.

Take with or without food. Take with food if it causes an upset stomach. Dissolve in 1/2 cup (4 ounces/120 mL) of water. Drink after the tablets have dissolved all the way.