I have been on 100mg Zoloft (sertraline) for a month for anxiety. I don't think I feel better and I might even be depressed? Do I need to increase the dose?

Talk w/your doctor. Are you working with a psychiatrist who prescribed the zoloft (sertraline)? It and other antidepressants require at least 4-6 weeks' trial for effectiveness. You may need a higher dose, but you need to discuss this with your own doctor who knows you much better than we on healthtap do. Please also avoid the alcohol since it can dysregulate your sleep and mood.