I am a Parkie with a blood pressure problem some of the time. When my blood pressure was first shown to be on the high side. I was prescribed nifedipine 10mg three times a day. A few months ago i stopped taking the nifedipine and my blood pressure seemed to be stable. Of course I watched my salt intake and other foods that could cause BP to spike up. Then yesterday I checked my BP and it was out of site. That scared me. So, I Thought, I still have some nifedipine, I think I will start taking it again. This morning I started taking it and at noon today I checked my BP and it was 120/70. I thought " The nifedipine is working. Then all afternoon my generic Sinemet did not work for me. Has anyone else had a similar experience with sinemet and nifedipine?