If by "Pfizermectin" you are referring to Paxlovid, that is not accurate. There are significant biochemical and pharmacokinetic differences between the molecules.
https://www.acsh.org/news/2021/12/02/how-does-pfizers-paxlov...
However, the McCullough protocol [1], and the closely related Zelenko protocols were not only about Ivermectin, HCQ, or Zinc, but instead cocktails of drugs with proven efficacy, and an overall approach to treatment prior to hospitalization.
Referencing the late 2020 publication:
Sanitization
Masks
hand washing / hand sanitizer Fresh air / Air circulation Negative pressure air isolation
Supplements:
Zinc with hydroxychloroquine Vitamin D & Vitamin C
Antivirals / Antibiotics
Quercetin Favipiravir Azithromycin Doxycycline
Mono-Clonal antibodies
bamlanivimab (MAB) casirivimab and imdevimab (MABs)
Anti-Inflammatory Colchicine
Corticosteroids
budesonide dexamethasone
Antiplatelet agents and antithrombotics
aspirin heparin Orals - pixaban, rivaroxaban, edoxaban, dabigatran
[1] https://www.imrpress.com/journal/RCM/21/4/10.31083/j.rcm.202...
This is why I say it is all over the place.
Also, RCTs have significant challenges in them
No no no this is disinformation! A protocol which includes *checks notes* Pfizermectin is totally different than a protocol which includes ivermectin. You can't compare the two!