Trump had been on it as a prophylactic with no reported problem. Not sure what medical reason there would be for him to eschew it now.
We so not know that President has not been taking HQC right along, and is even now including it in the regimen. For political reasons, its use may not even be revealed at this time.
HQC is what is known as an ionophore. It does not directly stop the COVID-19 Wuhan virus, but in the presence of zinc ion, it opens us a breach in the exterior wall of the virus and allows the zinc ion to be absorbed, which stops the virus from replicating, and thus, halts the infection in its tracks.
Hydroxychloroquine does not have the same harmful effects on the heart and other organs as the near-similar drug chloroquine (also an anti-malarial medication)
No clue. Maybe something developed. Or maybe he is on it but has not authorized his Dr to release that info.
Whatever the case, official word is a denial that he is taking it.