American actress Rita Wilson has opened up about her and husband Tom Hanks' coronavirus ordeal and warned of the "extreme" side effects suffered from medicine used to treat the virus.

Wilson and Hanks were the first high-profile celebrities to publicly state they had tested positive for Covid-19, announcing the news on March 12.

The couple were in Australia, where Hanks was working on an Elvis Presley biopic. They have both since made a full recovery.

In her first interview since being diagnosed, 63-year-old Wilson spoke to The Talk with Gayle King and detailed her symptoms.

"I felt extremely achy, uncomfortable, didn't want to be touched, and then the fever started," Wilson said, adding she suffered from "chills like I never had before."

Wilson, who is both an actress and a singer, said her fever reached its highest temperature about nine days following the positive test results, saying it "got close to" 39C.

Hanks and Wilson are both back home in Los Angeles

She also revealed she had been given the drug chloroquine, which is usually used to prevent and treat malaria and is being studied as a possible Covid-19 treatment.

Wilson is not sure what impact it had on her. She said: "I can only tell you that I don't know if the drug worked or if it was just time for my fever to break, but my fever did break."

And Wilson warned the drug had "extreme side effects". She felt "completely nauseous" and could not walk. "My muscles felt very weak," she said.

"I think people have to be very considerate about that drug," the star added. "We don't really know if it's helpful in this case."

Wilson also said Hollywood star Hanks - who is also 63 - had less severe symptoms than her.

The two of them are now home in Los Angeles.