Echinacea and astragalus also work well, but I wonder if you have problems with these too, since you have histamine issues?
Looking at your symptoms, you may have a vagus nerve issue where the neurotransmitter ACH is low from chronic overuse in the past. This would account for some of your symptoms. This product could work very well for you - Parasym Plus - https://www.amazon.com/Vagus-Nerve-SupportTM-Parasym-Plus/dp/B016J8FJYS.
Most of your symptoms can also be explained by the presence of fungal candida, but the vagus nerve is your anti-histamine nerve and is probably involved, as well.