Well good luck to anyone that works for, as a treatment it seems orders of magnitude short of the mark, but I hope it works for some folks.
I know someone with long covid currently. Her symptom seems mostly the loss of sense of taste, and anti-histamines are doing zip.
My experience included prolonged shortness of breath and the road to recovery for me started with the vaccine.
I had a prolonged bout of shortness of breath but never got the vax and it resolved on its own.
It could have just been timing and would have happened anyways.
Maybe the first generation of antihistamines work...like benadryl.
Coworker got multiple Jim Jones Jabs, has trouble breathing, and anti-histamines aren't doing zip. It's more than a month with Omicron for her and it's not getting better.