So I just picked up my prescription for effexor(cannot start it until I am down to 50 mg on my zoloft), but it is not the extended release. Should I ask my dr. for that. He has me starting at 1/2 a tablet of 50 mg for 5 days then 1 tablet(50 mg) every day. Thoughts? Everything I have read on here says to get the xr. Thanks.