Today's pot, mostly grown in the Carolinas, from what I have heard, could make a cup of coffee nervous. It's often a jittery, somewhat uncomfortable high. No comparison to the Panama Red, and the Acapulco Gold, and the Lebanese hash, and the good ole fashioned Thai stick we grew up with in the late '60s early '70s. Of course, I gave it up long ago, but this is what I hear.
There's nothing in marijuana that makes you jittery. It's not coke for cryin out loud.
I suggest you and your jittery pals get a prescription for Paxil. Government aproved, pharmeceutical, nice.