The Hillary Clinton campaign has released updated health information for the Democratic presidential candidate. Her doctor wrote in a letter that she had a "mild" and non-contagious form of pneumonia and remains "healthy and fit to serve as president."

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Clinton’s doctor, Dr. Lisa Bardack, wrote Wednesday that she is recovering from her pneumonia. She is “recovering well with antibiotics and rest,” after she became overheated, dehydrated and felt dizzy at a 9/11 memorial ceremony in New York City on Sunday.

The statement said she was treated with an antibiotic called Levaquin, which was prescribed for 10 days.

Clinton's doctor said she is "healthy and fit to serve as President of the United States."

Clinton's physician also found that the remainder of the Democratic candidate’s complete physical exam was "normal" and that she is in "excellent mental condition."

Clinton's aides say she will return to the campaign trail on Thursday.

Clinton’s collapse on Sunday was captured on video, which went viral. Its release followed speculation that the candidate had broader health issues, rumored to be why she spent most of August campaigning in private.

There was also conjecture that the Democratic National Committee was considering replacement candidates, from vice presidential nominee Tim Kaine to current Vice President Joe Biden.

Questions were also raised about how contagious her pneumonia was, as Clinton has been seen in close contact talking with others, most notably a young girl that day.

The Republican presidential nominee, Donald Trump discussed his health records on The Dr. Oz Show. The segment will air on Thursday.

During the segment, Trump, 70, handed Dr. Mehmet Oz, a Republican, a one-page summary of the exam, which was conducted by Dr. Harold N. Bornstein last week. Trump’s report was a few paragraphs with few details, according to USA Today.

Earlier on Wednesday, campaign manager Kellyanne Conway told Fox News the results of Trump's exam would be shared publicly "this week."

Trump’s personal physician, said in a letter last year the real estate mogul would be the "healthiest individual ever elected to the presidency."