I have your same symptoms. And over the past few years, I also have been given the antidepressants for Anxiety..usually 10mg...& told to half if that was too much...which has been...even 2.5. Although, I am in the older generation catagory & a female, all medical tests for these symptoms have come back perfect (cardio, sonagrams for clots, & many other medical procedures & all blood work is in normal range. My doctors have concluded it is an Anxiety issue. A few years ago, my PTs for back problems, suggested L-Theanine, an herbal med that their husbands found helpful. I didnt receive the relief I was looking for (to take the "edge" off) & still had that "zombie" feeling...However, recently my daughter in law suggested OLLY Stress reducer Gummies that I suggested to my APRN & she said to definitely try it, but I bought not knowing it also contained L-Theanine. After a few days, I experienced that slight zombie feeling so I, like you, am back to Square One. I even applied for a Medical Marijuana card & was approved under an Anxiety diagnosis. The MM advisor suggested the THC-CBD drops. One small drop brought the zombie feeling. There are other shops you can explore where "Cards" arent needed to explore the calming effects of certain herb products. The doctors say I am not giving the meds enough time to get established in my body , however, I dont have the luxury of having that feeling for a long time living alone. My doctor referred me to a psychiatrist at my request , & unfortunately, we did not bond in a first visit so I am waiting for another recommendation. A medical advisor suggested Calm.com that provides many meditations & alternative methods of calmness provisions to try on your own. I apologize for such a lengthy feedback, however, reading your similar story made me feel less alone & hoping something in my journey might help you...what works for one may not work for another. Some of my friends take Gabapentin for themselves & their animals:). It also was not for me when I was prescribed for back pain & was unable to tolerate. I also was given a test by my doctor in the beginning of this journey which showed my body did not tolerate all the antidepressant meds you also have tried. Keep reaching out. You will be in my thoughts & prayers.