Food supplements in caps are a great innovation of Istituto Erboristico L’Angelica: they can be screwed into the majority of bottles and are specifically designed to be dissolved in 0,5lt of water.
If you prefer, it is possible to dissolve the content of an active cap in 1lt or 1.5lt water. Its efficacy is not compromised as long as the entire liter (or liter and a half) is drunk during the day, so that the daily active cap’s dose is guaranteed. The only thing that could be compromised is the taste as the active cap is conceived to be used into 0.5 l of water. To dissolve it into a liter or more makes the drink more diluted.