Sodium phosphate effervescent tablets are commonly used as a laxative or to prepare the bowel for medical procedures. These tablets contain sodium phosphate and other ingredients that react with water to produce carbon dioxide gas, resulting in the effervescent or fizzing effect. If you want to get rid of the carbonation faster, there are a few things you can try.

1. Dissolve the tablet in warm water: Carbonation occurs more rapidly in warmer temperatures. By dissolving the tablet in warm water instead of cold water, you may be able to speed up the carbonation process [3].

2. Stir or agitate the solution: Carbon dioxide gas is released when the tablet reacts with water. Stirring or agitating the solution can help release the gas more quickly, allowing the carbonation to dissipate faster [3].

3. Increase the surface area: Breaking the tablet into smaller pieces or crushing it before dissolving it in water can increase the surface area of the tablet. This increased surface area exposes more of the tablet to the water, potentially speeding up the carbonation process [3].

It is important to note that while these methods may help to speed up the release of carbonation, they may also affect the effectiveness or safety of the medication. It is always best to follow the instructions provided by your healthcare provider or the manufacturer of the medication.

Sources:
[1] Drug Patent Watch. (n.d.). Sodium. Retrieved from https://www.drugpatentwatch.com/p/tradename/SODIUM
[2] National Center for Biotechnology Information. (2010). Sodium Phosphate: MedlinePlus Drug Information. Retrieved from https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3013557/
[3] Wikipedia. (2021). Carbonated Water. Retrieved from https://en.wikipedia.org/wiki/Carbonated_water