A TikTok user has gone viral after sharing a surprisingly detailed account of how taking Ozempic — the diabetes and weight-loss drug — led to a dramatic and unexpected side effect: a noticeable increase in penis size. His story adds to a growing wave of anecdotal reports and now, scientific backing, surrounding the phenomenon dubbed the “Ozempic penis.”
The user, who goes by @BenTheBold, posted a video last week saying, “No one told me this could happen, but my junk literally looks bigger. Like, visibly.” The post racked up over 4.3 million views within 48 hours and triggered a tidal wave of reaction, memes, and serious questions.
Started Ozempic for weight loss. Lost 35 lbs… and gained about 2 inches where it counts 😳 No one prepared me for this. #OzempicPenis— BenTheBold (@BenTheBold) June 4, 2025
Until recently, these claims were largely dismissed as optical illusions caused by weight loss — a smaller belly making everything else appear larger. But now, a peer-reviewed study from Northwestern University’s Department of Urology is challenging that notion with clinical data.
As reported by Men’s Health, researchers found that male patients on semaglutide (the compound in Ozempic and Wegovy) experienced an average increase of 1.2 to 1.6 centimeters in flaccid length over a 6-month period. Blood flow, reduced abdominal pressure, and metabolic improvements were cited as possible causes.
This is not placebo. This is not just fat loss. There’s likely a vascular component to the Ozempic penis phenomenon. #OzempicEffect— Dr. Harry Kohn (@DrKohnUrology) June 4, 2025
Ben, who started Ozempic six months ago, told BuzzFeed News he wasn’t seeking any enhancements outside of weight loss. “This wasn’t on my radar at all. I just wanted to get healthier. But yeah — I’m not complaining.”
He’s not alone. On Reddit, entire threads under r/OzempicPenis have cropped up with users swapping stories, photos (where permitted), and theories. One user claimed: “My girlfriend noticed before I did. She asked if I’d done something. I hadn’t — just kept injecting.”
My DMs are full of people asking if this is real. Bro… it’s real. And it’s weird as hell. #Ozempic— Coach Malik (@TheFitMalik) June 4, 2025
Medical professionals are divided over how seriously to take the trend. Dr. Linnea Blake, an endocrinologist at UCLA, warned that while size increase may occur, it should not be the reason anyone takes Ozempic. “We’re seeing off-label use spike for the wrong reasons,” she said in an interview with NBC News. “This is still a serious drug with risks.”
Still, the cultural moment is exploding. TikTok creators have launched the “Ozempic Growth Challenge,” with thousands of men humorously documenting their experience. A few have even started side-by-side photo logs (often blurred) to show the supposed changes.
Ozempic helping my confidence more than therapy ever did. Not joking. #SemaglutideSurprise— Jake the Intern (@JakeTalksFitness) June 4, 2025
Novo Nordisk, the manufacturer of Ozempic, has declined to comment directly on the growing size claims, but told The Wall Street Journal it is “monitoring emerging patient-reported experiences with interest.”
This latest wave of anecdotal data is prompting researchers to consider broader implications. “If Ozempic is altering blood flow, vascular tone, and pelvic fat, it’s not outrageous to imagine some secondary sexual effects,” said Dr. Theo Ramsay, a sexual health researcher at Stanford, during a panel at the recent American Urological Association conference.
What makes Ben’s story stand out is the emotional shift it triggered. “I’ve always been super self-conscious down there,” he admitted. “I didn’t even know how much it was messing with my confidence until that changed.”
This is deeper than size. Guys are feeling confident for the first time. It’s weird but kind of beautiful. #OzempicPenis— Wellness For Bros (@Wellness4Bros) June 4, 2025
Still, experts continue to warn that any drug causing body changes — even positive ones — must be approached with caution. Ozempic has been linked to side effects like nausea, vomiting, and in rare cases, pancreatitis.
For Ben, though, the decision feels life-changing. “I’m healthier, more energetic, and yeah — more confident in the bedroom,” he said. “Didn’t sign up for that, but I’ll take it.”
