Weight Loss Jab Side Effect: Tongue Turns Black

Sarah-Jayne Crawford, 32, began taking Wegovy in August 2024, weighing 19 stone 9 lbs, aiming to slim down for her November 2025 wedding. She initially paid £199 for a month's supply and later increased her dose. After 12 weeks, she experienced severe stomach pain, vomiting, and excruciating trapped wind, leaving her bedridden.

Within 24 hours, Crawford noticed her tongue had turned black, accompanied by severe mouth pain and foul-smelling sulfur burps. The pain escalated, forcing her to stop the medication and seek emergency care. Hospital scans revealed multiple gallstones blocking her bile duct, posing a risk of pancreatitis.

On February 10, 2025, Crawford underwent a total cholecystectomy to remove her gallbladder. She was advised to avoid Wegovy during anesthesia. She has since married and is recovering, though she emphasizes the potential dangers of these weight loss injections.

Semaglutide, the active ingredient in Wegovy, is known to cause dry mouth, bad breath, and sulfurous burps due to slowed digestion. While many users experience success, Crawford's experience underscores the risks, including gallstone formation, which is listed as a common adverse reaction by the manufacturer, Novo Nordisk.