I AM LOOKING FOR MFG OF BUPROPION XL 300 MG

i AM LOOKING FOR MFG OF BUPROPION XL 300 MG AS MY PHARMACY STATES IT CANNOT OR WILLNOT GET THIS BY MFG ZYDUS AND OTHER MFG DO NOT WORK FOR ME. i HAD SWITCHED PHARMACY 8 YEARS AGO THIS BRAND WORKED WELL. SINCE I HAVE HAD TO TRY OTHER MFG VARIOUS TIMES, I HAVE THE SAME EFFECT, WHICH IS NOTHING....IS THIS AVAILABLE MADE BY ZYDUS?
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