Q: The lower my heart rate the higher my blood pressure, why?
A: Usually when your heart beats faster, your blood pressure also increases. You are describing the opposite effect. This could be related to drugs you are taking, including recreational drugs and herbal or natural products. This could be caused by an undiagnosed medical problem such as thyroid disease. Make an appointment to see your doctor for an evaluation.
Relationship Between Blood Pressure & Heart Rate – eHow.com