Has anyone been on anti-depressant for several years. All of a sudden I feel anxiety , lack of energy. It is winter out with no sun, but I just don't feel good anymore. Can the drug make you start feeling sick. Do I need to bump up the dosage, try to get out of this funk. I've been taking Aplenzin for about 7 Yrs. I don't want to start all over. Please HELP.