Fluoxetine
"I was prescribed fluox by my GP to treat what was believed to be generalised anxiety disorder (later confirmed as comorbid with AvPD) circa 2012 and my dose was doubled in 2014. 

Initially results were good, significant reduction in anxiety and depression within a fortnight. But by 2014 the drug was ineffective and we doubled the dose which allowed me to function while still experiencing anxiety but came with incredible fatigue.

For medium term use fluox is an effective and ssri for depression and anxiety but in the long term is needs to be supplemented or replace as you build tolerance."