Promina is whey protein isolate made using ion-exchange processing. This method strips out most fat, carbs, and lactose, leaving a very high-protein powder. The trade-off is that gentler processes like microfiltration keep more bioactive fractions intact, such as immunoglobulins, which ion-exchange tends to lose.
People mix it with water or another drink right after training for fast absorption. Its low lactose content also suits folks who want a quick protein boost between meals without the stomach upset that regular whey sometimes causes. It dissolves easily and digests rapidly.