John Stamos vows to stand by Dave Coulier during cancer diagnosis

John Stamos sends love to Dave Coulier after learning of his cancer diagnosis.

Coulier, 65, revealed to PEOPLE in an interview published on Wednesday, November 13, that he was diagnosed with stage 3 non-Hodgkin's lymphoma in October after an upper respiratory infection caused severe swelling of his lymph nodes had.

Hours after the news broke, Stamos, 61, shared a sweet tribute to him on Instagram, filled with various photos documenting it Full house long-standing friendship of the stars.

The post began with a photo of Stamos hugging Coulier, followed by a throwback photo of the two, seemingly from their days afterward Full housewhich ran for eight seasons from 1987 to 1995. Other photos showed the two making silly faces and posing with their late co-star Bob Saget, who died in January 2022 at the age of 65.

“My brother from day one. I love you @dcoulier and I will be by your side through everything,” Stamos captioned the post.

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Coulier’s wife, Melissa Bring, responded in the comments section: “Love you PP – thank you for the daily support and love!! ❤️❤️”

Fans also commented on Coulier and Stamos' close bond after working on the popular sitcom, with one social media user writing, “These relationships that start at work and end up becoming lifelong friendships are extremely rare… and quite beautiful.” . I love the brotherhood among you!! 🍻”

Coulier told PEOPLE that Stamos would be paying him a visit on Saturday, November 16 — the day after his chemotherapy treatment.

“He says, 'If you just want to sleep I'll just sit next to you, or if you want to listen to music or just talk, whatever.' And I'm like, 'Wow.' That's like a brother. “This is truly a brother,” Coulier said.

Stamos, together with colleagues Full house Co-stars Candace Cameron Bure, Andrea Barber, Jodie Sweetin, Lori Loughlin, Scott Weinger and series creator Jeff Franklin were all part of a group message Coulier sent out to share the news of his diagnosis.

The actor told PEOPLE he wanted to make sure his castmates heard the news from him, noting everyone's reaction was “immediate.”

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“It was just this statement: 'I'll be there.' Just name the time and I know you're in good hands with Mel, but what can we do? “The love we have for each other is truly overwhelming,” he said. “We’ve been there for each other for so many years and that’s pretty remarkable.”