Hi i understand your concern. Xet cr contains peroxetine a SSRI. It will help to reduce anxiety by supplement or balancing serotonin level in brain. Betacap is propranalol and it is beta blocker. It is also used to control anxiety by different machanism than xet cr. Combination is even more useful then single one. If you do not have any side effect than it would better to continue both till improvement. There are other modalities pf treatment in social anxiety like behavior therapy or psychotherapy. Combination of drug therapy with behavior therapy will give better results and out come. I hope i have answered your query. feel free to ask. wish you a very good health. Thank you. Regards. Dr Vishal Garala.