Hi doomey, i am in exactly the same position as you.
i take 30 mg a day of citalopram anti depressant and i take 20mg propranolol 3 times a day.
I used to have panic attacks, which caused me to become depressed.
took me months to slowly increase my propranolol coz i was so scared, but they are my saviour!!
i can feel when its time to take the next dose as i start getting anxious again.
How much do u take? I was only on 10mg 3x day and it didnt work, it might need increasing or taken more regular. U r the guide. I still get anxious but cope so much better on my tabs, anti depressants help with anxiety too, mine are great and have been on both for 14 months now xx you are not alone there are so many people like us, i hope this helps xx