Here’s a link to recipes for helping control high blood pressure. Caution, before juicing grapefruit, consult with your doctor as it may interfere with some medications.
http://www.juicerecipes.com/health/conditions/juicing-for-high-blood-pressure/
PLUS, here’s a recipe that I use and enjoy:
1 apple, 1/2 grapefruit, 1/4 fennel bulb with tops. 1 whole clove garlic, 1/2 cucumber, 2 celery stalks, 1 inch ginger root, 1 to 2 lemon slices. Process through juicer and enjoy immediately.