I am new to the forums - just discovered them, actually

I have a very novice question, I'm sure (I hope black tea is even the right forum for chai!).
I had a .... strong experience with a Starbucks Chai tea years ago (probably approaching 10). I was absolutely jittery and could hardly even think for hours. Though, I admit I LOVED the flavor, it has made me terrified to drink chai tea. I did have a teabag of some decaf chai at a friend's house recently, and that went rather well.
So, my question

Thanks for any insight you might have for me!
Laine