Soy Protein is a high quality protein powder that is lower in cholesterol than whey protein and is vegan and vegetarian friendly. 

Soy protein has received some bad press in the past as soy has been believed to increase estrogen levels, however no data has been able to link soy to this. 

Soy protein is highly beneficial to lactose intolerant and soy protein has high amounts of the amino acids arginine and glutamine.