Hi I have been feeling low, lack of interest in doing things, lack of labido although can have an erection, and depressed affecting home and church responsibilities - went to GP who prescribed Citalopram not sure wether to take it, asked if I may be lacking in something ie Testosterone. GP has also offered a referral to counselling. What do you advise. I am 47 years old 15 stones, good medical history, 5ft 6inches in height