The actor-comedian sparked fears for his health after he was seen vomiting courtside during a New York Knicks basketball game at Madison Square Garden in New York on Monday before being escorted out of the iconic venue in a wheelchair.
Morgan has thanked fans for their well-wishes and revealed his illness was down to a dodgy dinner.
In a post on Instagram, Morgan shared a picture of himself lying in a hospital bed and wrote: "Thank you for all your concern!
"I'm doing OK now and doctors say it was food poisoning.
"Appreciate my MSG (Madison Square Garden) family for taking such good care of me and I need to shout out the crew that had to clean that up. Appreciate you!
"More importantly, the Knicks are now 1-0 when I throw up on the court so maybe I'll have to break it out again in the playoffs #goknicks."
The game - which ended with the Knicks beating Miami Heat 116-95 - was delayed for 10 minutes in the third quarter due to the former 30 Rock actor's medical incident.
A Madison Square Garden representative previously told People magazine: "We hope Tracy feels better soon and look forward to seeing him back courtside."
This is not the first time Morgan - who has diabetes and underwent a kidney transplant in 2010 - has experienced public medical issues.
In 2012, he collapsed outside a building at the Sundance Film Festival in Utah, with the screen star's representative saying it was due to a combination of exhaustion and altitude.
Morgan - who returned to work a few days later - posted on social media afterwards: "Superman ran into a little kryptonite. The high altitude in Utah shook up this kid from Brooklyn."
In 2014, he broke his leg and was in a coma for two weeks after the limo he was riding in was hit from behind by a Walmart truck on the New Jersey Turnpike.
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