The much-loved TV presenter was seemingly touched by Samuel Carvalho's story after he appeared on the ITV show to talk about living with a condition that causes him to faint randomly.
After making it through the interview without passing out, Phillip revealed minutes after on the show that the 22-year-old fainted as soon as he left the studio.
"Little bit shocked at the moment because we were just chatting to Samuel who said as he got up, 'Oh, thank goodness I managed to get through the interview without passing out,' and, he's fine, he's got a paramedic with him now, but as soon as he left the studio door he was absolutely flat out," Phillip told the cameras just moments after the interview.
Phillip Schofield has donated £5,000 to Sam Carvalho who suffers from a rare fainting condition
Phillip Schofield was shocked to hear of Sam's condition, which is still undiagnosed
This is heartbreaking! Stay strong, we WILL raise that money!
And it seemed the host couldn't forget about Samuel's tragedy – which is yet to be diagnosed by doctors – as he shared a photo of the young man in hospital on Twitter today.
"Omg @SamCarvalho this is heartbreaking! Stay strong, we WILL raise that money," Phillip wrote alongside the image, which showed Sam with a huge gash across his forehead.
The Cube host also included a link to a GoFundMe page, which hopes to raise £20,000 for an assistance dog for Samuel.
Desperate to get the guest the help he needs, Phillip donated £5,000 to the cause.
Sam also fainted after chatting to Phillip and co-host Holly Willoughby last week
Phillip has donated £5,000 to help buy Sam an assistance dog
"Thank you Phillip for donating £5,000 to our Crowdfund. You are such an amazing, genuine and generous man! @Schofe @thismorning," Sam later wrote on Twitter.
Speaking on the show earlier today, Samuel revealed that doctors are still none the wiser about what the cause of his condition.
"They have no clue," he confessed. "All of the hospitals I've been to, some of them are leading in heart problems, they haven't got a clue what's going on. They've tried all medication, nothing works."