There are certainly quite a few anti-depressants available on the market these days. One is not necessarily better than another, and what works for you, might not work for me. Bupropion (Wellbutrin) is considered one of the most stimulating medications, and therefore, in my opinion, is at the bottom of the list for treating GAD. Anti-depressants such as Citalopram (Celexa) and Escitalopram (Lexapro) are considered more "calming", and can have less severe side effects, but this again varies from person to person.
When starting an anti-depressant in the SSRI category, side effects can include a temporary increase in anxiety if the medication is started at a therapeutic level. This is because of an increase in serotonin levels. These side effects usually last about two weeks. Side effects can be prevented or at least diminished if the prescribing physician starts out at a sub-therapeutic dose, and makes increases every 10-14 days, until a therapeutic dose is reached.
If you are concerned about costs, many anti-depressants are now available in generic form. I was started on Citalopram (Celexa) 6-7 weeks ago. I pay less than $3 for a 30 day supply, and that is not a copay; it is the total cost of the medication.
I suggest you make a list of all your concerns, and then talk to your doctor about them. Your list might include side effects and cost, to name two.
The very best to you, TS!... Chuck