Hi Dave. Totally agree on acid PH thing! My diet was soo poor for years that my Ph was acidic enough to bleach my underwear (I know!) I saw you mentioned you're on 3lac and Primal Defence - at same time? If you are, you don't need to, in fact many people rotate the two, but I only use PD (might save you some precious pennies who knows!?) good luck (:o)