Independent reference & toolkit 100 compounds graded · Last reviewed June 2026

Compare · GLP-1 agonist

Tirzepatide vs VK2735

Both are glp-1 agonist compounds. Here's how they line up on the evidence — graded the same way.

TirzepatideVK2735
Evidence 10/10 7/10
ClassGLP-1 agonistGLP-1 agonist
SummaryA dual GIP/GLP-1 receptor agonist with strong RCT evidence for type 2 diabetes, weight loss, and sleep apnea; GI side effects are common.VK2735 is an investigational dual GLP-1/GIP receptor agonist from Viking Therapeutics being studied for obesity and metabolic disease. Phase 2 data are promising but it is not approved anywhere, and long-term safety is unknown.
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Tirzepatide

Tirzepatide is a once-a-week injectable peptide. You may know it by its brand names: Mounjaro (for type 2 diabetes) and Zepbound (for weight management and sleep apnea). Most of the compounds we write about here have thin evidence behind them. This one is different: it has been tested in large,…

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VK2735

VK2735 is an experimental obesity drug from a company called Viking Therapeutics. It's part of the incretin family (a group of gut-hormone-based drugs that turn down appetite) — the same broad family as semaglutide and tirzepatide. It has drawn a lot of buzz for two reasons: its early results in…

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