It was extremely effective for my SA. Took away all physical symptoms of anxiety, no stomach or muscle tension, no hypertension, no racing heart. All that remained is some mental self doubt that was extremely easy to overcome and didn't stop me from living a normal life. Also elimated ability to feel sadness and ability to cry... could not feel sad or cry if I tried, only felt normal and happy when triggered. That year was the best year of my life, the only year where I got to live a normal life.
However, the effectiveness runs out after a few years. Plus you expose yourself to risk of life ruining protracted withdrawal.