I Was Wondering, My Pharmacy Told Me They Were Filling

I was wondering, my pharmacy told me they were filling my Wellbutrin 300 xl with par? When I looked at my bottle it said manufactured by Anchen not Parma . The tablet is round white with A 102 on it. I have always used brand and was going to have to pay &580.00 for one months supply. Who actually is making my pill.
I think I am going back on my brand.
Thanks
Lynn