Brand Comparison
Zepbound vs Saxenda: Which Is Better for Weight Loss in 2026?
⚠️ Medical Disclaimer
This page is for educational purposes only and does not constitute medical advice. GLP-1 medications are prescription drugs. Discuss all treatment decisions with a licensed healthcare provider who knows your complete medical history. Individual results vary significantly from clinical trial averages.
Side-by-Side Comparison
| Factor | Zepbound | Saxenda |
|---|---|---|
| Active Ingredient | Tirzepatide | Liraglutide |
| Manufacturer | Eli Lilly | Novo Nordisk |
| FDA Approval Year | 2023 | 2014 |
| FDA Indication | Obesity / chronic weight management | Obesity / chronic weight management |
| Formulation | Weekly subcutaneous injection | Once-daily subcutaneous injection |
| Dosing Frequency | Weekly | Daily |
| Starting Dose | 2.5 mg | 0.6 mg |
| Maximum Dose | 15 mg | 3.0 mg |
| Weight Loss (key trial) | 22.5% mean body weight reduction at 15 mg (SURMOUNT-1, 72 weeks) | 8.0% mean body weight reduction (SCALE Obesity and Prediabetes trial, 56 weeks) |
| Key Trial | SURMOUNT-1 | SCALE |
| Cash Price (est. Q1 2026) | $1,000–$1,100/month | $1,300–$1,400/month |
| CVD Outcome Benefit | No / Not established | No / Not established |
Cost estimates based on Q1 2026 data. Weight loss from named pivotal trials. Individual results vary. Verify current pricing with your pharmacy.
Which Is Right for You?
The "better" medication depends entirely on your individual medical history, insurance coverage, treatment goals, and tolerability. Here are key decision scenarios:
★ Primary goal is maximum weight loss
Based on clinical trial data, Zepbound has demonstrated higher percentage weight loss in pivotal trials. Discuss whether the magnitude of difference is clinically meaningful for your situation with your prescriber.
★ You prefer fewer injections
Zepbound requires only once-weekly injection; Saxenda requires daily injection. If injection frequency is a barrier, Zepbound may improve adherence.
★ Cost is a primary factor
Cash prices differ significantly between medications. Zepbound costs approximately $1,000–$1,100/month/month without insurance; Saxenda costs approximately $1,300–$1,400/month/month. Both manufacturers offer savings programs for commercially insured patients. Use our Cost Estimator → to compare your specific situation.
Side Effect Comparison
Zepbound Common Side Effects
- •Nausea
- •Diarrhea
- •Vomiting
- •Constipation
- •Abdominal Pain
- •Injection Site Reaction
- •Fatigue
Saxenda Common Side Effects
- •Nausea
- •Diarrhea
- •Constipation
- •Vomiting
- •Headache
- •Injection Site Reaction
- •Fatigue
Both medications share GI-related side effects as the most common adverse events. The profile is very similar because both belong to the GLP-1 receptor agonist class (or include GLP-1 agonism). Differences in tolerability are individual and cannot be predicted in advance.
Cost Comparison
| Scenario | Zepbound | Saxenda |
|---|---|---|
| Cash pay / no insurance | $1,000–$1,100/month/mo | $1,300–$1,400/month/mo |
| Commercial insurance | $25/month with Eli Lilly savings card for eligible commercially insured patients | $25/month with Novo Nordisk savings card for eligible commercially insured patients |
| Mfr. savings program | Eli Lilly Zepbound Savings Card | Novo Nordisk Saxenda Savings Program |
Estimated based on Q1 2026 data. Always verify with your pharmacy or plan.
💰 Estimate your personalized monthly cost →
Switching Guidance
If switching between Zepbound and Saxenda, consult your prescriber about the transition protocol. Key considerations include:
- Whether to allow a washout period or transition directly
- Starting dose for the new medication (may not match your current dose)
- Insurance prior authorization requirements for the new medication
- Monitoring frequency during transition
See our drug conversion calculator → for dose equivalency guidance.
📈 Calculate Your Projected Weight Loss
Estimate expected outcomes for either medication based on your starting weight and duration.
Open Weight Loss Projector →