Has anyone tried coming off Cymbalta using St John's Wort?

I have come down for 60 mg of Cymbalta to 30mg over a period of 4 months, using the tapering method. That method was very useful indeed and I didn't have any of the awful 'zaps' that go with withdrawing from this drug. However I do have tremenduous fatigue - I have Chronic Fatigue - and I'm wondering if St John's Wort would be ok to use with Cymbalta. Various websites say 'no' but I want to give it a try anyway. Just wondering about other people's experiences...

Many thanks,

freemeplease