How to prepare an antiparasitic bath of Praziquantel?

Praziquantel is a molecule that is relatively poorly soluble in water (400 mg/L). To promote its suspension, there are 2 methods:

Aqueous method

• Add the powder to a bowl;
• Gradually pour lukewarm tap water while kneading until it forms a homogeneous liquid with the consistency of pancake batter;
• Add the suspension obtained under the surface of the water in the basin at the outlet of the pump.

Solvent method

The powder can be “wet” with a little organic solvent, such as acetone, alcohol (unmodified ethanol), propylene glycol, etc.

Be careful, however, the addition of organic solvent in a closed water circuit can be the cause of bacterial multiplication following the massive supply of carbon (energy source for certain bacteria). If the water becomes cloudy after a few days, restart the UV and renew part of the water.