Effervescent tablet

Effervescent or carbon tablets are tablets which are designed to break in contact with water or another liquid, releasing carbon dioxide in the process. Rapid breakdown often may cause the tablet to dissolve into a solution, and is also often followed by a froth. These kind of tablets are usually used to deliver drugs or to encapsulate cleaning products, such as the enzymatic cleaners designed for wetsuits.

These tablets are products of compression of component ingredients into a dense mass, which is packaged in blister pack, or with a hermetically sealed package with incorporated desiccant in the cap. When it is necessary, people can drop them into water or another liquid to make a solution. Cleaning tablets may be added to laundry or filled tubs of water, depending on the package directions.

Effervescent tablets have been used as products of the pharmaceutical and dietary industries for decades. Consumption of these tablets is high in Europe, and it's growing in the USA.

Ingredients
There are several categories of effervescent tablets' active ingredients:
 * 1) Those that are difficult to digest or disruptive to the stomach.
 * 2) Those that are pH–sensitive, such as amino acids and antibiotics.
 * 3) Those requiring a large dose.
 * 4) Those that are susceptible to light, oxygen, or moisture.
 * 5) Others types