I have been taking Abiraterone (Zytiga) for a few months at 1000mg per day but because of recent elevate Liver function numbers was told to cut back to 500 mg per day. Other than this, the radiation and hormone treatments have only caused me to have very tolerable hot flashes and some reduce energy. However the cost of Abiraterone has been in the neighborhood of $1600 and now $1300 per month thru Mayo's pharmacy.. I recently learned that using a discount card through other pharmacies I can get this med at 1/4 this amount. Is there any problem or negative reason in switching to a cheaper pharmacy?