Meds in clinical trials?

so ive been suffering from anhedonia(numb to feelingsof pleasure) for alil while now caused by mirapex. ive found out that cyproheptadine helpsme,which is a serotonin antagonist,problemis that my tolerance went up too high on it, and im suffering badly. im positive id be better by now had i been ableto continue the cyproheptadine. ive read about meds in clinical trials that are similar to cyproheptadine.. is there any way id be ableto take a med thats in a clinical trial? i need something bad!