Anxiety and depression medications work in different ways, and your doctor will work with you to find the one that works best for your body. Anti-depressants work by increasing a chemical in the brain called serotonin, which is related to feelings of happiness. They also have a quick effect, often with only a few days of dosage needed to see a decrease in symptoms. Anti-depressants can be taken either alone or in combination with anti-anxiety medications. Anxiety and depression are two of the most common mental illnesses in the United States. In fact, 18.5 million adults in the U.S. suffer from anxiety, whereas 16.9 millionRead More →