speaking of immunity being in the stomach, there's one more thing... castor oil packs. i started doing them a while back, and a few days/weeks after I started, i had this dream that green plants were growing.... fields of them, and the message was that they were difficult to grow. well dreaming is my thing, and the first thing i thought of in regards to that dream was, "good, the packs are working." Edgar Cayce did say that one purpose of castor oil packs was to 'grow immunity' in the gut, by growing the peyer's patches. here's a link about it... http://www.edgarcayce.org/th/tharchiv/research/longevity.html
in regards to supplements, i do the same thing - hold the bottle and tune in. i take a resting 'pulse' by listening to my body for a moment before holding the supplement, and then hold it and take another looksee. but the pendulum is a nice add-on to that. when i go to whole foods and hang around the nutrition center, i look pretty funny - not moving, eyes closed, just getting info. I gotta say though, with my current physical condition, staying still and tuning in is harder than it should be!