I became a vegetarian back in 1988 as I decided to join my elder daughter to change to a vegetarian diet for her health issue. I started to feel knee pain in my mid-30s, especially when walking up and down stairs. After retiring, I picked up the hobby of hiking, but knee guard was an essential item and could only walk slowly. Many friends have recommended all kinds of supplements for my knee problem but I cannot take most of them liberally as they are not vegetarian compliance. Since last December, I have started to take PURE daily, just a small spoonful with warm water. After a few months, I have found my years long knee problem improving significantly. Now I can walk long mile without knee guard and enjoy a lot more in my weekly hiking activities. I am most happy to recommend PURE, which is a 100% vegan certified collagen booster from Australia, to my vegetarian friends.