Anyone had adverse effects switching to Venlafaxine XL from normal Venlafaxine?

Hi, have any of you had any issues switching from say, 2 x 37.5mg standard Venlafaxine to 1X 75mg Venlafaxine XL?

They should be practically the same, but I wondered if say taking the standard long term could cause side effects when switching to XL.

Thank you.