Chocolate "works" on BP through beta-blocker mechanism. Literature says dark chocolate works better because it's more concentrated, but also because milk proteins block the effect, so do not wash down dark chocolate with milk! About 1-2 ounces of 85% or 90% chocolate works for me, but that is a lot of chocolate. I get some mild effects with milk chocolate when I eat it simply because I like it!
I had high blood presure for years and i heard a way to lower it. So i tried it. you get a bag of herseys kisses dark chocolate and eat two a day. And i bet your blood presuer will come down.The doctor had me on all kind of medican and none of it was working and i was misrable. But the chocolate really works.