President Donald Trump has returned to the White House on Monday after spending three nights undergoing COVID-19 treatments at Walter Reed National Military Medical Center.

Trump claimed his victory over the virus. In a produced video released on Twitter, he said: I didn't feel so good. Two days ago I felt great, like better than I have in a long time... better than 20 years ago."

"Now I'm better -- and maybe I'm immune! I don't know. But don't let it dominate your lives. Get out there. Be careful. We have the best medicines in the world, and they're all happened, very shortly, and they're all getting approved," Trump added.

Trump has been recovering from COVID-19 with the help of a team of physicians administering world-class care and special access to therapeutics.

Trump's doctors have said that he is taking at least eight medicines and supplements. However, the timeline of Trump's illness remains unclear.

Reports said here are some of the COVID-19 treatments the president is taking: 

Remdesivir

Trump's physicians told reporters that they were planning to administer the fourth dose of the antiviral drug Remedesivir. That was before Trump checks out of Walter Reed and heads back to the White House on Monday evening.

Trump has been receiving Remdesivir intravenous transfusions since Friday. It was done within 24 hours after he revealed his positive diagnosis.T

he said COVID-19 drug was initially developed for Ebola treatment. However, it showed a solid evidence supporting its use for COVID-19 patients, according to the National Institutes of Health (NIH). 

Regeneron monoclonal antibody 'cocktail'

Trump is also reportedly taking a cocktail of two synthetic, pharmaceutical versions of what occurs naturally in the body to fight infection. It is a mix of monoclonal antibodies made by biotech company Regeneron.

It is thought to be promising, but it is still in its experimental phase.The cocktail published positive yet preliminary data for its cocktail treatment, and it showed it improved symptoms in patients without severe disease. 

Dexamethasone

On Sunday, Trump's physician told reporters that the president is being treated with the steroid Dexamethasone. It is in response to temporary drops in his oxygen levels.

Dexamethasone, which is a corticosteroid used for its anti-inflammatory effects, has solid evidence supporting its use in COVID-19 patients, according to NIH.

In severe cases, it is thought that steroids can fight haywire inflammation caused by the virus.

Trump's personal physician admitted that the president had been given oxygen aid since falling ill.

Dr. Sean Conley, Trump's physician, said Trump had received supplemental oxygen, but "it was not required."

Dr. William Schaffner, professor of preventive medicine and infectious diseases at Vanderbilt University Medical Center, said that prescribing a steroid is a "borderline indication within the physicians' prerogative."

The press and public have not seen the president's chest X-rays or CAT scans.

Famotidine

Famotidine is more commonly known by its brand-name Pepcid. It is an FDA-approved drug for heartburn, but not as treatment for COVID-19.

Earlier observational studies showed improved survival amongst hospitalized COVID-19 patients. However, experts caution that observational studies are not a substitute for high-quality, randomized trials designed to show a treatment's effectiveness.

A trial for an intravenous infusion of famotidine is still ongoing.

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