I have been taking Neuro Protek since around May or June (the regular version, not the low phenol one) and it has been very good. I’ve never had any negative reactions to it and it is part of my total MCAS protocol of Zyrtec, Ketotefin, Quercetin, Neuro Protek and Daosin. It is hard to say which med has the greatest effect but for now I am not touching any of them b/c it is working. My rescue med is Atarax but have not had to take it in the last 1-2 weeks at all. I would recommend trying NP and nothing to lose IMO.