I've written and published two articles on the Water Reed doctors experimenting with drugs on the president of the United States.  
Of course, major media ignore this stunning reality; they see nothing but "cutting-edge" treatments and "the finest medical care."
The two initial drugs were Remdesivir and Regeneron. A lack of immediate adverse effect does not rule out an ensuing impact on Trump's health.
Remdesivir, among its many listed effects, can cause serious kidney injury. Dr. Peter Breggin has written: "Fauci had to know from the beginning that remdesivir was a failed antiviral drug that would probably do more harm than good. An earlier, famous remdesivir trial for Ebola was stopped because remdesivir was causing a significantly higher mortality rate than other antiviral drugs in the same trial…"
Regeneron, the other drug Trump is taking, is one of a class of "antibody therapies." The often-cited adverse effect of this type of medicine is expanding infection.
The combined effects of these two medicines have never been studied in depth.
Nevertheless, the Walter Reed doctors treated the president of the United States with both of them. Their hypothesis seemed to be: if a little bit of medicine is good, a lot will be better.
Needless to say, this approach has never been backed by science at any time. It is reckless in the extreme.
And now we learn about a third drug, dexamethasone.
LA Times: "Like other steroids, dexamethasone can have significant side effects that could have an impact on Trump's ability to work. Those can include irritability, mood swings and trouble sleeping…" 
Note: It's not clear when dexamethasone was started. If it was administered after Regeneron, we could be looking at an attempt to reverse increased lung inflammation resulting from the effects of Regeneron. If true, this would be disturbing, to say the least.
What are some of the effects of dexamethasone? WebMD presents a list of common and less common adverse effects: Stomach upset, headache, dizziness, trouble sleeping, increased appetite, weight gain, fever, persistent sore throat, bone/joint pain, increased thirst/urination, fast/slow/irregular heartbeat, eye pain/pressure, vision problems, heartburn, puffy face, swelling of the ankles/feet, symptoms of stomach/intestinal bleeding (such as stomach/abdominal pain, black/tarry stools, vomit that looks like coffee grounds), pain/redness/swelling of arms/legs, tiredness, mental/mood changes (e.g., depression, mood swings, agitation), unusual hair/skin growth, muscle pain/cramps, weakness, easy bruising/bleeding, slow wound healing, thinning skin, seizures.