Hi Lynn...last night I was reading my Home Medicine Guide by Edgar Cayce and came across this:
"This herbal tonic was recommended in a reading for a woman with high blood pressure. Cayce attributed this condition to poor eliminations, which had created an excess of toxins in the blood, and thus increased the blood pressure. Toxins in the digestive tract were reflexly affecting the liver and kidneys, causing trouble in the extremities and eliminations."
So...it's quite likely that the B&P has stirred up toxins (the Bentonite can't suck them up fast enough) and that has raised his blood pressure. He needs to get those toxins out of him.