I've taken 100mg hydroxyzine to help my insomnia - it's not working. what other sleep aids could help?

Melatonin: You might want to try melatonin as it is a natural way to help with sleep and it is over the counter.

Treat the anxiety: Your anxiety is likely the cause for your insomnia (as would depression). Consider consulting a psychiatrist given the number of problems you are experiencing. Hydroxyzine does little if anything on the anxiety or depression.