GLP-1 Side Effect Probability Tool
View the likelihood of common side effects based on clinical trial data for each compound and dose tier.
Semaglutide (Wegovy) - Maintenance Dose
Nausea44%
Diarrhea30%
Vomiting24%
Constipation24%
Abdominal pain20%
Headache14%
Fatigue11%
Dyspepsia9%
Decreased appetite9%
Dizziness8%
Flatulence7%
Injection site reaction4%
Under 10%
10-19%
20-29%
30%+
All Dose Tiers Comparison
| Side Effect | Starting | Maintenance | Max |
|---|---|---|---|
| Nausea | 20% | 44% | 44% |
| Diarrhea | 15% | 30% | 32% |
| Vomiting | 8% | 24% | 25% |
| Constipation | 12% | 24% | 24% |
| Abdominal pain | 8% | 20% | 20% |
| Headache | 10% | 14% | 14% |
| Fatigue | 5% | 11% | 11% |
| Dyspepsia | 4% | 9% | 9% |
| Decreased appetite | 8% | 9% | 9% |
| Dizziness | 3% | 8% | 8% |
| Flatulence | 4% | 7% | 7% |
| Injection site reaction | 3% | 4% | 4% |
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Medical Disclaimer: Side effect probabilities shown are from published clinical trial data and represent averages across study populations. Your individual experience may differ. Most GI side effects are mild to moderate and decrease over time with proper titration. Consult your healthcare provider about any side effects you experience.