Survodutide: separating the mechanism from the marketing
Purity across our Survodutide samples ranged from 98.2% to 99.4%. Here is the context.
ResearchLiraglutide
Also known as: NN2211
Strong evidence
ClassGLP-1 receptor agonist
Research statusFDA-approved (branded forms)
CategoryGLP-1 / incretin
Independent tests4
Studies indexed2
Companies tested 4
Overview
A once-daily GLP-1 receptor agonist approved for type 2 diabetes and weight management, and the first of the class to reach broad clinical use.
Liraglutide is classified as a glp-1 receptor agonist. Its current development status is: fda-approved (branded forms). Multiple randomised controlled trials in humans support the primary claims made for this compound.
The Peptide Institute tracks Liraglutide because it is actively sold through research-compound and telehealth channels. Our interest is narrow and specific: what is actually in the vial, whether the label is accurate, and whether the sellers of it can document what they claim. We take no position on whether anyone should use it.
Independent Testing
Independently tested companies that sell Liraglutide
Every company below was evaluated with product the Institute purchased anonymously and sent for third-party laboratory analysis. Ranked by Index Score™.
- Companies
- 4
- Samples
- 4
- Updated
- Mar 5, 2026
- 1 Quantum Peptide Group Excellent Institute
Top Rated Liraglutide97.6% average purity across 1 sample
Purity & Testing 98 Transparency 85 Samples 1 89 View company - 2 Cardinal Metabolic Clinic Excellent
97.8% average purity across 1 sample
Purity & Testing 98 Transparency 88 Samples 1 87 View company - 3 NextGen Peptides Excellent
97.3% average purity across 1 sample
Purity & Testing 91 Transparency 80 Samples 1 85 View company
Research & Studies
Studies library-
Mechanistic characterization of Liraglutide receptor binding
Adds to the Liraglutide evidence base without resolving the central question of human efficacy.
-
Long-term outcomes with Liraglutide: an open-label extension
One of the more methodologically careful entries in the Liraglutide literature.
Independent Testing
Testing databaseLaboratory verification of Liraglutide products across the companies we index.
Liraglutide Quantum Peptide Group
Purity 97.6% Verified
Liraglutide Cardinal Metabolic Clinic
Purity 97.8% Verified
Liraglutide NextGen Peptides
Purity 97.3% Verified
Liraglutide Helix Research Supply
Purity 97.7% Verified
Latest Coverage
New Cagrilintide data: reading the results critically
7 independently tested samples across 4 companies, and what the results say about Cagrilintide.
Study Summary
Regulators signal closer attention to Cagrilintide supply channels
A close reading of the Cagrilintide evidence, without the marketing layer.
RegulationCommunity Discussions
Forum 4 replies
1 replies
58 replies
42 replies
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