Thanks for the reply. Yes it does affect the serotonin levels, how I don't know.
All I know is it makes me more relaxed and less sharp and aggressive, it also makes me feel less depressed. The funny thing is nicotine has a similar effect but that just makes my mild asthma a lot worse.
I have done a PH cycle in the past but wont to move up to a test-e cycle and just wondered if Citalopram would cancel out some or all the positive affects of the test.