It all started with what my GI system reject after drinking all different kinds of protein powder. Here’s Dr. Justin explains (10 min. video) well the benefits of Collagen Based Protein Powder. I carry Apex Energetics Collagen Based Protein Powder (berry and chocolate flavors) in my clinic. So far, nobody complains but receive all great feedback from my patients. I basically mix with other ingredients to make my Morning Smoothie-to-GO.