You can take several supplements. Two of the best are Invalid Link Removed, which contains grape seed extract and hawthorn extract. Both of these are very potent in lowering blood pressure. Invalid Link Removed which contains Celery Seed Oil Extract, Horse Chestnut Extract, and more Hawthorn Extract. One final thing I might add is Invalid Link Removed. It contains 200mg of CoQ10 which is a good dosage, although you could take it twice daily, and it has amazing cardiovascular benefits.
If you're looking for an all in one solution, you could try Invalid Link Removed multivitamin. It has a lot of the ingredients I listed above, albeit in much smaller doses.
Hope that helps!
-SS