I've taken FastBlast since it's creation as Akea, 20+ years. Best nutrient drink around.
Mental Clarity, Energy, Improved Sleep and decreased appetite. I've been taking two scoops daily. It makes fasting easier.
It definitely held off hunger during fasting at the last 30 minutes before the next pouch I was hungry, but decent amount of water which helped with hunger.
For me personally, fasting isn't necessarily easy, but it's simple to follow the plan. A little dedication and discipline and it absolutely works. I have tried it all, and I have found what works - give it a try.