Yes, Alka-Seltzer effervescent tablets contain sodium in the form of sodium bicarbonate. The amount of sodium per tablet in each product is listed below.

The sodium in the Alka-Seltzer Effervescent products plays an important role, enabling the medication to dissolve quickly in water and begin neutralizing acid as soon as ingested.

These products are intended for short-term use. Ask a doctor before use if you are on a sodium-restricted diet. You should stop use and speak with your doctor if you need to use the product longer than recommended on the label.