drinking water too can help with blood pressure. Many times high blood pressure is thick (dehydrated, lacking in oxygen) blood.
For example, at the first signs of stroke (thick blood, clots) drink three glasses of water--this can head it off at th pass.
Cayenne is superb for stopping a heart attack--or bringing someone back, after one!
* important. When drinking half your body weight in ounces though, make sure to take a little Himalayan or Celtic or other good salt.