Alternative therapies are known to impact different people differently. Also many have not been tested enough to opine definitively on their efficacy and safety in a given situation. However, generally speaking, the natural ways to alleviate problems related to blood pressure are:
Diet: Omega 3 fatty acids help to lower lipid and triglyceride levels. They can be obtained in the form of fish oil or flaxseed, in capsules or other supplement form.
It has been seen that the two main omega-3 fatty acids, EPA and DHA, reduce blood pressure if the problem is mild. Dark chocolate is also seen to slightly lower blood pressure.
Stress Reduction: Stress levels are directly linked to hypertension which is just another name for high blood pressure.
Yoga, qigong, and tai chi are seen to help with controlling stress and consequently hypertension.
Yoga relaxes the muscles and they improve blood circulation; particularly to the heart and the brain. It has been seen that systolic blood pressure decreases the same way after tai chi exercises, as it does after moderate aerobic exercises.
Proof of these healing techniques and their efficacy is more than just anecdotal; studies have also substantiated the premise. Also the fact that there can be no harm that results from trying them out should make them an attractive proposition to anyone.