So Ive been (especially) on methylfolate for quite a while now and my CFS body feeling has still not come back. I'm very happy about this and greatful for every day my body doesn't feel like it's dying. But in the last weeks I've been feeling terribly apathetic. It's not cool to feel this apathetic. It's not as horrible as the CFS-body-feeling, but I'd still like it to go away. Also its very hard for me to laugh about very funny stuff. I'm certain that my serotonin is low. But why? Maybe because its winter? Any recommendations? Hypericum perforatum? Vitamin D? ..other?