Unless you have diabetes it’s likely you hadn’t even heard of Ozempic before the start of this year, but according to Chelsea Handler, now: “Everyone is on Ozempic”. In an episode of ‘Call her Daddy’, Handler claimed that she was “unknowingly” taking the injection (typically used to treat type 2 diabetes) after her doctor prescribed her a medication called semaglutide - Ozempic's chemical name - for weight loss. Of course, Handler isn’t the only celeb taking a stab of Hollywood’s “skinny pen”, as Elon Musk openly credits semaglutide for helping him lose almost 13kg, while rumours suggest that Kim Kardashian used the drug to help fit into Marilyn Monroe’s iconic ‘Happy Birthday Mr President' dress at the 2022 Met Gala. Currently, #ozempic has over 537 million views on TikTok; but as celebs and influencers sing Ozempic’s praises, there is a worldwide shortage of the drug. So, what do we know about Ozempic, and what do the availability issues mean for those who need it?Ozempic is the brand name for the once-weekly semaglutide injection that mimics a gut hormone called glucagon-like peptide-1 (GLP1). Semaglutide, also sold as Wegovy and Rybelsus, makes the pancreas secrete insulin, reduces blood glucose levels and suppresses appetite. Although we're tying some of Hollywood’s most glamorous to the drug, possible Ozempic side effects aren’t so glamorous.The American Food and Drug Administration (FDA) gave Ozempic the green light to treat type 2 diabetes in 2017, with Australia's Therapeutic Goods Administration (TGA) following suit in 2019.As researchers found the drug also lead to significant weight loss, the FDA approved Ozempic to treat obesity (in patients with a BMI of over 35) in 2021.While Americans can use the drug