For a while I got off milk, including whey. I purchased some hemp protein powder and some beef isolate. The beef isolate was slightly salty and didn't tastes as good with most shake mixtures, the hemp tasted better and was easiest on the gut, but didn't digest fully, think green sand in your stool. I've done no protein supplement's in the past as well, and yes it is much harder to get adequate protein, but it is doable.