Nifedipine
"I was on a different brand of Adalat CC 30 mg.  I am a Military Widow so fill most of my prescriptions at Military Base Pharmacies.  In Dec. 2011, I had my prescription filled and noted the pill was different in color & size.  The Military Pharmacist told me the Government had changed to a different drug company for Adalat and it might take 3 or more weeks before the new drug formula would work for me.  Six weeks later, my blood pressure is not being controlled as well as my former Adalat prescription did.  I can't switch to another brand for 90 days because TriCare for Life will not let me fill a new prescription till I run out of the brand I received. I cannot afford to pay over a $110 at a civilian pharmacy to change to another brand."