As for the antidepressants - when people have been on them for a while, then stop, they can have a rebound effect where they get depressed again - like a withdrawal. It may be more successful if he goes down VERY slowly - no more than 10% a week.
And he should consider physiological causes of depression - vitamin deficiencies (B complex, fish oil, vitamin D), hormonal causes like thyroid problems or gluten sensitivity, sleep disorders.
Also ask about Deplin - a prescription, high-dose methyfolate (B vitamin) that is used to treat depression.
And exercise is a good as Prozac in some studies.
And yes, you are doing the right thing in taking care of yourself - all that walking on eggshells around the depressed guy is draining.
