@purete There is an enzyme which converts lactose to glucose
Watch Neil red milk video about it
Skimmed milk powder is a good source of protein if you replace it with milk but it could not replace whey protein
And it's still better than beginner protein powder which consists of milk solids (caesin, lactose) but doesn't even have 40% protein content shout out to muscle blaze beginners protein
It's also better than sattu for protein because it's a complete source of protein
And it's a decent enough cheap protein source for bulking
I could easily digest 100gm of milk powder without any issues
But if you really want to do it i would recommend to divide it into small doses 18gm x4 you only need 72gm of skimmed milk powder for a standard 25gm of protein dose in 30 gm of whey protein serving
It's a caesin protein mostly so it will absorb slowly anyway so there is no benefit of consuming a 100 gm of serving all at once