Bottle gourd / Calabash / Long melon or Lagenaria vulgaris is a very common vegetable .
150 gm of this gourd is washed well and cooked with 500 ml of water in a pressure cooker till soft. The skin need not be peeled . Crush the vegetable and filter the water and drink it while lukewarm.This must be done on an empty stomach in the morning . One should not eat or drink anything for an hour after drinking this .This will definitely bring down the high B.P levels in a person.