There are a number of different classes of medicines used for high BP. And within some of those classes there are different sub-classses. And there are a number of different meds within each class/sub-class.
And each person reacts differently to meds. she needs to work with her doctor to find ones that work for her.
But I noticed that the beta nicardia contains both a beta blocker and nifedipine which is a calcium channel blocker as is amlodipine. It is unusally for 2 meds of the same class to be prescribed.View Thread
My first thought is some kind of allergy or reaction. Is there some seasonable food or activity that you do during that period.
An other thought is low level CO2 poisoning. Continuous levels that are too low to alarm can cause symptoms. However, if it was CO2 it would be expected to get worse or at least continue through the winter.View Thread