I have been taking the phendimetrazine for 2 months now and just started my 3rd. The first month I was given the 35mg (wt), the next month they gave me the 35mg (bt) and this month I was given the 35mg (yt). Each time I was told they were stronger than the last. My question is: What is the difference in the bt, wt and yt?
Phendimetrazine 35mg (yt), (wt), (bt) 
Linear Mode
