HCQ opens cells and allows zinc to enter which is what makes it effective.And keep in mind that only one monoclonal antibody treatment, sotrovimab, is effective against omicron. Regeneron and Eli Lily (as stated by their manufacturers) are useless in treating Omicron and should not be used.
I will also note that hydroxychloroquine is not effective in preventing or treating Covid. This is finalize in many large-scale mainstream studies with conclusive results.