I'm sorry. I have not tried Thymosin Alpha 1 but I do use thymus glandulars when I feel like I'm catching something. I have a discontinued brand that I keep in the refrigerator. I open the cap and mix it with ascorbic acid (Vitamin c) and swallow with water making sure to gargle it a bit and it will take down a sore throat in one or two doses max. Plus, it starts to numb the throat within 5-10 minutes.
It's my poor person's version.
I also found this article on healthrising just now about other ways to increase NK function: https://www.healthrising.org/blog/2...ic-fatigue-syndrome-three-natural-ways-boost/
I'm learning more about the mushrooms now.
I haven't read the whole thing but thought you might find it interesting. Maybe there is something there that would work the same way but be cheaper???
Also the doctor mentioned is in Florida, I believe. Are you there now? She also talks about mold illness on her website. She isn't an MD but still might be helpful though she probably wouldn't be covered by insurance.
Edit: Hopefully someone else will be able to answer your original question. Oh, I just also found an old thread on it: https://forums.phoenixrising.me/threads/thymosin-alpha-1.61531/