As well as missing the Grammys, Liam's hospitalisation also has made him miss out on some promotion for his latest Netflix movie Isn't It Romantic.
"Sorry I couldn’t make it to the @isntitromantic premier tonight guys. Been dealing with some pretty annoying health stuff the last couple days," Liam revealed on Instagram.
Luckily Miley stepped in and attend the film's premiere for him.
"Lucky I have the best girl in the world to represent for me! Thanks for the support babe! I hope everyone enjoys the movie! It’s a perfect Valentine’s Day flick so if ya ain’t got nothin better to do then go see it! Love to all!"
It was Liam's Isn't It Romantic co-star Rebel Wilson who first shared the news that he had been hospitalised.
"[Liam] was in hospital overnight, so hopefully he will be fine," Rebel told Extra.
"He texted us this morning."
Thankfully, he is doing better now.
Watch below... Miley Cyrus Dedicates Romantic Birthday Message to Liam Hemsworth: ‘We Speak Our Own Language’: