Prescription weight loss medications have transformed the conversation around weight management. For those who have struggled with traditional diet and exercise approaches, these treatments offer a clinically supported alternative. Here's what you need to know before considering this path.
How Prescription Weight Loss Medications Work
Most modern prescription weight loss medications work by targeting appetite regulation hormones. GLP-1 receptor agonists, the class that includes semaglutide and tirzepatide, reduce appetite, slow gastric emptying, and improve insulin sensitivity. The result is a significant reduction in caloric intake and improved metabolic function.
Semaglutide (Wegovy)
Semaglutide has become one of the most widely prescribed weight loss medications globally. Clinical studies have shown that patients using semaglutide can achieve an average weight loss of up to 14.9% of their body weight. It is administered as a weekly injection and requires a gradual dose increase over several months.
Tirzepatide (Mounjaro / Zepbound)
Tirzepatide is a newer dual GLP-1/GIP receptor agonist that has shown even more impressive results in clinical trials. Its dual mechanism of action targets two different appetite-regulating pathways simultaneously, offering potentially greater weight loss than single-agonist medications.
Who Is a Candidate?
Prescription weight loss treatment is generally recommended for individuals with a BMI of 30 or higher, or 27+ with weight-related health conditions such as type 2 diabetes, hypertension, or sleep apnoea. A thorough medical assessment is always carried out before starting any prescription treatment.
Important Considerations
These medications are not a permanent cure for obesity, which is a chronic condition requiring ongoing management. They work best as part of a broader lifestyle change that includes improved nutrition and regular physical activity. Side effects — most commonly nausea, particularly when starting — are usually temporary and managed with gradual dose escalation.
A consultation with a qualified medical professional is essential to determine whether prescription weight loss treatment is appropriate for your individual health profile and goals.