I'm taking escitalopram ssri for my anxiety. Can I also take testosterone boosters at the same time in my bodybuilding program?

Protein safer. You are better off eating more protein rather than using testosterone boosters. At 19 yo it is unlikely that you need more testosterone unless your doc tested you and said so. Stress management can help via self-help books, e.g., hope and help for your nerves by weekes or a psychologist to teach you a few techniques. Peace and good health!