A few thoughts of my own......
My two cents worth,
A few thoughts to add......
First, SSRI's or "selective serotonin re uptake inhibitors" are not anxiolytics (anti-anxiety drugs). Anti-anxiety meds include benzodiazapines (xanax, valium, atavan, or Klonopin), azapirones (buspar), barbiturates (because of their sedative effects) , some antihistamines, and a variety of herbal supplements. Most of these drugs have some sedative effect and it is suggested not to use heavy machinery or drive (or shoot a gun) until you know their effects on you. Their effects are drowsiness, dizzyness, etc.
While SSRI's probably do not change "the chemistry of anxiety" in and of themselves, it is assumed that there is generally an underlying or "masked depression" present with anxiety disorders and that for some people this may be the case. Suicidal or homicidal response while taking SSRI's is rare, but there is a statistical connection, usually in teens.
There are also many non-drug tools like meditation, exercise or many of the alternative therapies which can be highly effective. I use shooting as one way to relax, not because the gun goes bang, but because the focus and breathing required also slows my heart rate, oxygenates the blood, raises serotonin levels and is just plain fun.
Oh yes, when in doubt, the best person to ask about drugs is your local pharmacist.
All the best, I feel for you