Sudden vision changes (NAION): in February 2026, the MHRA issued a safety warning linking semaglutide to NAION, a rare eye condition that can cause sudden painless vision loss in one eye
What if the headaches, the muscle cramps, the crushing fatigue, and the brain fog that so many people blame on semaglutide or tirzepatide are actually caused by something far simpler
Dr Lim Chong Wei, an endocrinology, diabetes and internal medicine specialist at Sunway Medical Centre, clarified that semaglutide was originally approved as a weekly injection for Type 2 diabetes, typically combined with the right diet and exercise
Elderly patients may require more gradual dose escalation due to potentially increased sensitivity to gastrointestinal effects
Appetite and weight changes present another consideration
Semaglutide is the active ingredient in the following brand-name drugs: Ozempic, Wegovy, and Rybelsus