I am 68 years old with hypertension and taking amlodipin 5mg 1 tablet daily since 2008.  I take daily walks 3-4km and have cut down salt intake. Now my average blood pressure readings are 130/83 in winter and 117/75 in summer. Please explain why blood pressure readings are lower in summer?  Can I cut down amlodipin to 1/2 tablet daily?

 It is well known that blood pressure is lower in the summer. The reason for this is complicated and probably involves factors that are yet to be discovered. The lowering is certainly related to the immediate response of the body to a warmer temperature which causes blood vessels to relax, and the response of the long term regulatory systems of the body. You should talk to your doctor before you make any change in your blood pressure medicine.

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