Medications

Mounjaro vs Saxenda: Which Weight Loss Option Is Better?

6 min readApril 4, 2026By Jeremy H., GLP-1 Nutrition Researcher
Mounjaro vs Saxenda: Which Weight Loss Option Is Better?

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Mounjaro and Saxenda are both injectable medications that help with weight loss. But they use different drugs and very different dosing schedules.

Quick Comparison

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Mounjaro Saxenda
Active drug Tirzepatide Liraglutide
Drug class Dual GIP/GLP-1 agonist GLP-1 agonist
FDA approval Type 2 diabetes Weight management
Injection frequency Once weekly Once daily
Dose range 2.5 mg – 15 mg 0.6 mg – 3 mg
Maker Eli Lilly Novo Nordisk

How They Work

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Mounjaro mimics two hormones (GLP-1 and GIP) that signal fullness and slow digestion.

Saxenda mimics one hormone (GLP-1) that does the same thing.

Two hormones vs one is a big part of why Mounjaro tends to produce stronger results.

Weight Loss Results

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  • Mounjaro: ~15-22% body weight loss at max dose
  • Saxenda: ~5-8% body weight loss at max dose

Mounjaro produces significantly more weight loss on average.

Side Effects

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Both cause similar GLP-1 side effects:

  • Nausea (most common)
  • Diarrhea or constipation
  • Decreased appetite
  • Stomach pain
  • Fatigue
  • Headache

Side effects are worst when you start and after dose increases. Most people adjust within a few weeks.

Convenience

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  • Mounjaro: One injection per week
  • Saxenda: One injection per day

Weekly is clearly more convenient.

Cost

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Mounjaro: ~$1,060/month Saxenda: ~$1,300-1,400/month

Mounjaro is cheaper at list price and produces more weight loss. But your insurance coverage will likely decide which one you can actually get.

Who Should Choose Mounjaro?

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  • You want stronger weight loss results
  • You want weekly injections
  • Your insurance covers it
  • You're starting fresh with GLP-1 treatment

Who Should Choose Saxenda?

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  • Your insurance covers it and not Mounjaro
  • You've used it before and it works
  • You prefer daily dosing for more control
  • You can't tolerate tirzepatide

Bottom Line

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Managing your GLP-1 medication is easier with the right tools:

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Mounjaro is newer, weekly, cheaper, and produces much more weight loss. Saxenda is older, daily, and still works for many people.

The best choice depends on your insurance, your health history, and what your doctor recommends.

Work with your healthcare provider to determine which medication is right for you. Individual results and experiences vary.

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Written by
J
Jeremy H.
GLP-1 Nutrition Researcher

Nutrition researcher and founder of The GLPSpot. Jeremy built this site after watching friends and family struggle with the nutritional challenges of reduced appetite on GLP-1 medications — loss of muscle mass, dehydration, and nutrient deficiencies.

Published: Last reviewed:
Medical Disclaimer: This content is for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition or treatment.

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