Singulair vs Wegovy: side-by-side comparison
Singulair (Respiratory Medications) and Wegovy (Diabetes Treatment) belong to different therapeutic classes and are rarely interchangeable. This page compares the medications' purposes, mechanisms and the situations where each is used.
| Property | Singulair | Wegovy |
|---|---|---|
| Active ingredient | Montelukast | Semaglutide |
| Manufacturer | Organon | Novo Nordisk |
| Class | Respiratory Medications | Diabetes Treatment |
| Strengths | 4mg, 5mg, 10mg | 0.25mg, 0.5mg, 1mg, 1.7mg, 2.4mg |
| Forms | tablet, chewable tablet, oral granules | pre-filled pen |
What's the same
Singulair and Wegovy are used in very different patients, and the points in common are limited. The main shared element is that both meet regulatory standards for efficacy and safety and benefit from pharmacist oversight.
Key differences
Singulair belongs to Respiratory Medications while Wegovy belongs to Diabetes Treatment. Indications, mechanisms and target populations differ. The comparison is most useful when a clinician has mentioned both medications and the patient wants to understand where each fits.
Mechanism and action
Singulair: Montelukast selectively blocks the CysLT1 receptor, which mediates the action of leukotrienes C4, D4 and E4 — proinflammatory mediators released by mast cells and eosinophils. Wegovy: Wegovy acts on the GLP-1 receptor in the central nervous system and gastrointestinal tract to reduce appetite, slow gastric emptying and increase satiety.
When Singulair is preferred
Singulair is approved in adults and children for the maintenance treatment of asthma, including exercise-induced bronchospasm, and for the treatment of seasonal and perennial allergic rhinitis when conventional therapy is insufficient or not tolerated.
When Wegovy is preferred
Wegovy is indicated as an adjunct to a reduced-calorie diet and increased physical activity for chronic weight management in adults with obesity (BMI 30 or higher) or with overweight (BMI 27 or higher) and at least one weight-related comorbidity such as hypertension, dyslipidaemi…
Frequently asked questions
Is Singulair or Wegovy better? ▾
Singulair and Wegovy are not interchangeable — they treat different conditions. Asking which is "better" is meaningful only when a clinician has weighed both for the same specific clinical scenario.
Can I switch from Singulair to Wegovy? ▾
Switching between Singulair and Wegovy is rarely an appropriate decision since they belong to different classes and treat different conditions. The real question is usually whether the diagnosis calls for one medication or the other — which the prescriber resolves.
Do Singulair and Wegovy have the same side effects? ▾
No — they belong to different classes and have distinct side-effect profiles. Each medication has its own prescribing information.
More Singulair comparisons
The information on this website is provided for reference and educational purposes only. It does not replace consultation with a qualified healthcare professional.