I've been taking Vital Proteins for a few months, my SIL introduced me to them. Stated with one scoop in coffee then realized the directions say two scoops (oops!). I don't think I notice a big difference in anything? (I still look like a haggard mom without enough sleep - my go-to look for the past 18 years. )
I usually get the regular bovine one which seems to dissolve fine in coffee. DH mistakenly bought the one with Hylaronic (sp?) acid and Vitamin C (skin/hair/nail/joint support) - this one gets all clumpy, and I think I can taste it a little bit.
"Every mother needs a wife." - Amy Poehler, Yes Please