I'm afraid I can't find anything in my pharmacology books about "seredyn." Are you sure you have the correct name and spelling of this med? You mention "other natural treatments...." is this something you found on the Web under natural ways to help with anxiety?
I would recommend you speak with a pharmacists for correct information on this.
There may be others on the forum who can speak to this drug/supplement. Sorry I wasn't any help.
Good luck.
Peace
Greenlydia