Updated

"Tiger King" star Jeff Lowe is on the mend after suffering a stroke earlier this month.

A source close to Lowe confirmed he was airlifted to a hospital on March 18 after suffering a stroke. He's since returned home following the health scare, but is now questioning whether he was poisoned.

"He's back at home now recovering but taking things easy," the source told us.

The insider said Lowe was airlifted by a helicopter from the WinStar World Casino in Oklahoma to a hospital in Denton, Texas. It was at the casino where Lowe's wife, Lauren, tells TMZ she found him not breathing. She called 911 because she thought he "was dying in my arms." 

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Jeff Lowe of 'Tiger King: Murder, Mayhem and Madness.' (Netflix)

Now the couple is searching for answers. The source further claimed to Fox News that Lowe and his wife believe he may have been poisoned by a man who confronted the couple at the casino hours prior, on March 17, supplying them with drinks.

"The person walked up to him and Lauren at the casino and said, 'I know what your favorite drink is, it's this.' [Jeff and Lauren] had never met this guy before. Jeff thinks it was something that caused the stroke," the source said.

According to the insider, EMTs administered Narcan to Lowe while en route to the hospital. Narcan is known as an opioid overdose reversal drug. However, the source said there was "no reaction whatsoever." Blood and urine tests at the hospital later confirmed he tested negative for commonly abused drugs like cocaine and ecstasy.

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Lowe returned home from the hospital earlier this week. The source said he doesn't remember the flight to the hospital. He's since experienced some difficulty speaking, but is recovering.