"i was given this after trying several other meds. my doctor gave me 2 mg bars. the yellow ones (generic) aren&#039;t bad and the white one isn&#039;t either, but them green ones will wipe you out. they are at least 40% stronger despite being the same strength. the use to be very expensive, but are only $5.56 for a 60 pill supply with my insurance ( which is bootleg obama care)."