Hello, have been on Effexor XL for over 8 years! Best thing that ever happend to me, except over time I graduallywent from 75mg to 37.5.
1).The only difference is the effexor XL is time relesase and is released slwer into your body. Thats what was explained to me. You can go to the Website and read it for yourself!
2). If it's XL you take the entire does at once. Now for me, taking it in the evening works a lot better because it seems I'm not as groggy.
3) Capsules are preferred to me, gets into your system faster. At least it seems that way!
Hope I've helped some!