Lifestyle Health Rupert Grint Says He Suffered Kidney Stones While Filming 'Servant' : 'I Was Weeing Blood for 5 Days' "I live in fear now that it will happen again," Rupert Grint said after suffering from kidney stones while working on Apple TV+'s Servant By Glenn Garner Glenn Garner Instagram Twitter Glenn Garner is a Writer/Reporter who works heavily with PEOPLE's Movies and TV verticals. Since graduating from Northern Arizona University with a dual major in journalism and photography, he got his professional start at OUT Magazine, The Advocate and Teen Vogue, and he's since consistently kept his finger on the pulse of the LGBTQ community. His first book The Guncle Guide was released in 2020 and was featured on Katie Couric's list of 100 recommended books of the year. People Editorial Guidelines Published on January 30, 2023 02:40 PM Share Tweet Pin Email Photo: ANGELA WEISS/AFP via Getty Rupert Grint had a couple of rough weeks while filming his Apple TV+ series Servant. The Knock at the Cabin actor, 34, said his bout with kidney stones while working on Servant was "one of the worst things I've ever experienced," explaining during an interview with GQ that the doctor used a laser to blast the mineral deposits, but some pieces got stuck. "So they had to put a stent in my, er, urethra," he said. "I was weeing blood for five days. I live in fear now that it will happen again." Rupert Grint and His Harry Potter Costars Have a WhatsApp Group Chat Called 'The Potterheads' Although Grint claimed the stones were caused by a lack of hydration, his Servant costar Nell Tiger Free had a different explanation. "Rupert had a storyline where his character drank these leafy kale juices," she said. Rupert Grint in Servant. Apple TV+ Never miss a story — sign up for PEOPLE's free daily newsletter to stay up-to-date on the best of what PEOPLE has to offer, from juicy celebrity news to compelling human interest stories. "What I love about him is if it says in the script 'He drinks a pint' of something, Rupert will drink the full thing in every single take," added Free, 23. "Apparently the surplus of those greens in your body can cause kidney stones." M. Night Shyamalan Is Back with Terrifying Trailer for His New Thriller 'Knock at the Cabin' Grint also recounted suffering from tonsillitis for several years after filming 2005's Harry Potter and the Goblet of Fire (the fourth film in the franchise). "While I was filming, there was never any time to get them out. From Goblet to the end of the franchise, I was just ill. My tonsils were absolutely massive," he said. Rupert Grint on the cover of GQ Hype. Heather Hazzan "They became a metaphor, really," Grint continued. "So as soon as I finished my work, I got them removed. It was one of the best decisions I ever made." The British actor originated the role of young wizard Ron Weasley in 2001's Harry Potter and the Sorcerer's Stone, reprising the character over the next decade until the eighth and final installment Harry Potter and the Deathly Gallows — Part 2 (2011). RELATED VIDEO: The Cast of Harry Potter Know How To Have Fun — Both on and off Set A Knock at the Cabin premieres Friday, Feb. 3 in theaters, and new episodes of Servant's fourth and final season stream Fridays on Apple TV+.