Claimed effect · Semaglutide

Does Semaglutide help with major cardiovascular events?

A
Grade A — established in humans1 large RCT · effect size: moderate
Short answerEstablished in humans. 1 large RCT point the same way: a moderate effect. SELECT trial, 17,604 participants: a 20% relative reduction in people with established cardiovascular disease and no diabetes.

What the studies show

SELECT trial, 17,604 participants: a 20% relative reduction in people with established cardiovascular disease and no diabetes.

Several well-run randomised trials in people, pointing the same way. You can plan around this. It still says nothing about whether the effect is worth the side effects for you.

  1. 1
    Lincoff AM, et al. Semaglutide and cardiovascular outcomes in obesity without diabetes (SELECT).N Engl J Med, 2023;389:2221–223217,604 participants; hazard ratio 0.80 for MACE.

In context

Semaglutide is a once-weekly GLP-1 receptor agonist approved for type 2 diabetes and, at a higher dose, for weight management. In large randomised trials it produces roughly 15% average weight loss over 68 weeks and reduces major cardiovascular events in people with existing heart disease. Gastrointestinal side effects are common and are the main reason people stop. It is a prescription medicine; products sold outside that channel are unlicensed copies.

Semaglutide is approved (rx). Legal status differs by country — see the regulation section or the jurisdiction pages.

Questions

Is Semaglutide proven to help with major cardiovascular events?
Yes, as far as human trials can show it: 1 large RCT. LYO grades this outcome A.
What studies are behind the grade?
SELECT trial, 17,604 participants: a 20% relative reduction in people with established cardiovascular disease and no diabetes.
Is Semaglutide approved for this?
Semaglutide is an approved medicine (Approved (Rx)); whether this particular outcome is a licensed indication is stated on the compound page's regulation section.

Other outcomes for Semaglutide

Reviewed 1 September 2026. Grades count human evidence only; see how LYO grades. Not medical advice. Correct this page →