both are zinc ionophores
Welcome, Anon.
Zinc sulfate in combination with a zinc ionophore may improve outcomes in hospitalized COVID-19 patients
https://pubmed.ncbi.nlm.nih.gov/32930657/
To zinc or not to zinc for COVID-19 prophylaxis or treatment?
https://pubmed.ncbi.nlm.nih.gov/34468306/
Can Zn Be a Critical Element in COVID-19 Treatment?
Again, the effectiveness of Zn can be enhanced by using chloroquine as an ionophore while Zn inside the infected cell can stop SARS-CoV-2 replication.
https://pubmed.ncbi.nlm.nih.gov/32458149/