yes
It's really Hydrocodone/APAP and the apap just stands for Tylenol. The answer to your question is Yes, just don't take too much Tylenol as it will damage your liver.
That would best be answered by your doctor. He knows your issues and situation better then us. I would sure not take them if they are not prescribed
You should not take Lexapro and 5-htp together. I have read this several places.
Not sure. Use the link below.
Nope, it reacts with the Seratonin and can cause seizures, rare but possible, basically a Seratonin Overdose