Shop around for doctors. This is easier if you have money (ref. Joe Rogan and his controversial treatment plan). Plus, the active ingredient may be the same, but the inactive ingredients might not. At least when taking (any med) under medical supervision, there's a trained person to help weigh the positives and negatives of any drug you're taking, and to adjust as needed. Or, you know, don't hang out in crowds, mask up, and vaccinate as front line defenses for your health, things we know at least provides a 95% solution that will work for most people. I'll even throw in things like vitamins, which don't have as strong of a backing in the medical community (varies by the provider), but may help (or at a minimum, unlikely to harm at normal doses). Then if you get sick and want to go off label and take unproven or unorthodox measures, have at it. Most doctors aren't willing to deviate from medical norms/guidance from boards/associations/FDA/CDC, unless they are doing their own research and study, which takes time they might not have, especially if their patient load is high.