Ive been taking Vital Proteiins annd also a similar one by Garden if Life for 4-5 years. About 50mg oer day to increase my daily protein for energy improvement. I try to gett approx. 70 mg protein a day. It definitely works for that. My skin, hair and nails are definitely improved. However, not my joints. I recently learned from "That Vitamin Movie" online docuseries that for joint improvement we want to look for protein powder sourced from bovine connective tissues and bones. VP and Garden of Life both source from bovine hides. That's probably why they are so awesome for the surface look, hair, skin etc. I just ordered my first bone and connective tissue sourced protein powder so cant comment yet on it. If its affects are as good as the hide protein powder, I should be arthritis free in a couple years. It takes time and consistency to see and feel results. I consume 4 scoops per day on average.