He has touted both; e.g. https://www.youtube.com/watch?v=3GuNbGC2D_8

In-vitro results are worth following up on, but it is my understanding (as a non-expert) that it's very common that they don't pan out in actual humans. Turns out that human bodies and the way we interact with drugs are rather more complex than simple in-vitro situations.

It's really to soon to recommend either drug. Even with 0 side-effects there is a high risk of it being a massive waste of resources better spent elsewhere. This is just classic Trump afraid of being seen as not being on the top of the world in literally every situation.