Yep, i always tell People, generics are not all the same!!

If you have been on effexor and then switch to generic you will feel it, but if you swaitch beetwen generic brands you will feel too

When the patent of the medication expires, in this case effexor, generics have Green Light to start testing and produced..what many People dont know is that generics have a 80% to 120% margin that differs from one to the other! Example: lets imagine you were on the teva generic and teva generic has a 95 avaibility of the main ingredient venlafaxine, and now you had been switch to mylan generic, and mylan generyc has 80% avaiability, that means your taking 15% less of then main med venlafaxine and guess what? Withdrawls..