Welcome to Just answer !
I am sorry to learn about your condition and I empathize with you.
Well you see at the moment at 7.5 mg / day dose of Lexapro you are still at a sub-standard dose of Lexapro which is not effective enough dose to counter your anxiety. You should go up the dose to 10 mg first and after 1 week to the optimal dose of 20 mg / day of Lexapro at which it is expected to work best against anxiety. You should ask your doctor to not to be hasty in switching over to doxepin as so far you have not been tried on optimal dose of Lexapro , so how can you rule it out as ineffective.
So I reckon instead of hopping from one drug to another , try to remain on the optimal dose of Lexapro for at least 2-3 weeks to see it's benefits in terms of improvement in anxiety and then pass the verdict on it's efficacy.
Along with the dose increment of Lexapro, you got to start taking klonopin at dose of 0.5 mg twice a day on a regular basis for at least 3-4 weeks so that this drug buys time for Lexapro to make an impact on your anxiety levels and once this begins to happen then you will no longer require the use of klonopin as Lexapro will alone be formidable enough to counter your anxiety and keep you symptom free.
Now in case this ploy does not work then instead of trying another anti depressant like doxepin, a more time saving and much more effective ploy will be to try 2 anti depressant drug combination called as 'California Rocket Fuel' which entails Effexor XR at dose of 75-150 mg / day + Remeron at dose of 15-45 mg / day.This two drug combination is world known for managing intractable / stubborn cases of anxiety as well as depression and so it shall prove to be very beneficial for you.
Kindly see the link below for more information on California Rocket Fuel..
But this is a back up option , first you need to exhaust your present reserve of Lexapro as mentioned above by using it at it's optimal dose and coupling it with twice a day dose of klonopin on a regular basis for initial 3-4 week period.
I hope this helps.
Wish you all the best.
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