I have tried Rescue Remedy as well and wish like Hade's Underworld I could say it works for me, but no dice. Ugh. Not Melatonin, GABA, l-tryptophan, St. John's Wort... Most of what I've just listed actually aggravate my anxiety disorder. And certainly not any kind of marijuana. Believe me, I have tried it. Did an entire youtube channel on it. That plant and I do not get along, sadly.
Zoloft had the same affect on me, causing major anxiety and mania-like reactions.
I have Clonazepam for anxiety as well as it is one of the only drugs I can tolerate. I hate that it is addictive; scares the heck out of me, actually (such that we are dealing with my fear of addiction in therapy), but the fact is I need it, right now.
Hopefully, as my work in therapy continues I will need less and less Clonazepam. That's my constant goal, though my practitioners (therapist and med. psych.) are trying to help me calm my fears about this issue for right now, focus on therapy, use the Clonazepam as a tool and think of discontinuance as a good, long term goal.
Sorry, I went off on a bit of a rant there; I'm terrified of addiction and it's an ongoing issue for me.
EDIT: Forgot to say thank you, Patty, for the tip.