Welcome to Healthcaremagic Forum
You havent mentions your age....but still if you have had it for long time and evn had a bypass ,then expecting a PERMANENT CURE for hypertesion is unrealistic.
It can be kept undercontrol by certain ayurvedic, homeopathic
remedies, along with your current medication ( which shud not be stopped in any case), along with dietary and lifestyle management.
Give your body and mind rest by eating balanced and sensible diet, moderate exercise (under supervision), and prnayaam.
All the best.
For further enq- email@example.com