The best probiotic I have found, short of making really good fermented/high/aged meats is Garden of Life "Primal Defense", its a good deal if you buy it in the non capsulated form. Also, make sure you get lots of gristly meats with lots of cartilage, shoulder roasts/chops are good for that, also knees, if you let them dry you can scrape and peel off cartilage and tendons, cause there is likely to be some damage there too. Eating whole fish and shrimps will help too.