Why don't effervescent tablets dissolve in milk?

Effervescent tablets are designed to dissolve in water due to the presence of acids and bases that react to produce carbon dioxide gas, creating fizzing. Milk contains fats and proteins that can inhibit this reaction, making it more difficult for the tablet to dissolve. Additionally, the pH level of milk is not as conducive to the reaction as water, further slowing down the dissolution process. As a result, effervescent tablets may not fully dissolve in milk.