Antidepressants remain some of the most widely prescribed drugs, but most popular antidepressants are now available as generics. While selective serotonin reuptake inhibitors (SSRIs) and SNRIs (serotonin and norepinephrine reuptake inhibitors) remain the most commonly prescribed antidepressants, various new types of drugs may be available in the future. For example, drug companies are working on…