Sodium bicarbonate, or baking soda, can help prevent the formation of uric acid kidney stones and help dissolve existing uric acid stones, notes WebMD. Sodium bicarbonate tablets are available for this purpose, but they do contain salt.
A person who is on a low sodium diet must speak with a doctor before taking sodium bicarbonate tablets, states WebMD. Sodium bicarbonate tablets work by making the urine less acidic, in turn making uric acid kidney stones less likely to form. A common side effect of taking these tablets is fluid retention or edema. An allergic reaction is a medical emergency and 911 must be called. Symptoms of an allergic reaction include swelling of the tongue, face and throat or difficulty breathing.