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Tirzepatide Beats Semaglutide in Weight Loss and Blood Sugar Control

Tirzepatide Outperforms Semaglutide

Tirzepatide Outperforms Semaglutide in Blood Sugar Control and Weight Loss

A groundbreaking meta-analysis, set to be unveiled at this year’s Annual Meeting of the European Association for the Study of Diabetes (EASD) in Hamburg, Germany (2-6 October), has unveiled compelling evidence establishing the superiority of tirzepatide over semaglutide in managing blood sugar levels and achieving significant weight loss in patients. The study, spearheaded by Dr. Thomas Karagiannis and his team from Aristotle University of Thessaloniki, Greece, amalgamated data from 22 independent studies.

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Semaglutide has garnered approval for the treatment of type 2 diabetes as well as obesity and weight management. Tirzepatide, meanwhile, is approved for managing type 2 diabetes and has pending applications for approval in the realm of obesity and weight loss. The scarcity of randomized controlled trials (RCTs) directly comparing subcutaneous tirzepatide to subcutaneous semaglutide prompted this comprehensive research effort. By pooling data from 22 distinct trials, the study aimed to discern the comparative efficacy and safety profiles of tirzepatide and semaglutide in individuals with type 2 diabetes.


The study authors conducted an exhaustive search through Medline and the Cochrane Library for RCTs assessing the maintenance doses of subcutaneous tirzepatide at 5, 10, or 15 mg once-weekly, or subcutaneous semaglutide at 0.5, 1.0, or 2.0 mg once-weekly, spanning a minimum of 12 weeks. Comparators encompassed all eligible doses of tirzepatide and semaglutide, placebo, and other glucose-lowering drugs directly compared to tirzepatide and semaglutide in at least one trial. The meta-analysis evaluated differences in the impact on HbA1c (glycated hemoglobin, a marker of blood sugar control), body weight, and the risk of adverse events.

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Key Findings:

Encompassing data from 22 RCTs, involving a total of 18,472 type 2 diabetes patients, the study revealed that tirzepatide at the 15 mg dosage exhibited the most substantial reduction in HbA1c when compared to placebo (mean difference of -2.00%). This was followed closely by tirzepatide at 10 mg (-1.86%) and semaglutide at 2.0 mg (-1.62%). All three tirzepatide doses proved more effective at reducing HbA1c compared to their semaglutide counterparts.

Moreover, tirzepatide outperformed semaglutide when it came to weight loss, with tirzepatide doses of 15 mg, 10 mg, and 5 mg delivering notable reductions in body weight (-10.96 Kg, -8.75 Kg, and -6.16 Kg, respectively) compared to semaglutide (-5.24 Kg, -4.44 Kg, and -2.72 Kg for semaglutide at 2.0, 1.0, and 0.5 mg, respectively). In between-drug comparisons, both tirzepatide 10 mg and 15 mg exhibited superior weight loss results compared to semaglutide at 0.5, 1.0, and 2.0 mg, while tirzepatide 5 mg outperformed semaglutide at 0.5 and 1.0 mg.

It’s worth noting that additional data on the change in body weight between tirzepatide and semaglutide, not versus placebo as displayed in the abstract figure, will be presented during the oral presentation at the congress.

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In conclusion, this comprehensive meta-analysis underscores that tirzepatide at doses of 5, 10, and 15 mg exhibits superior efficacy in reducing HbA1c compared to semaglutide at 0.5, 1.0, and 2.0 mg, respectively. Furthermore, tirzepatide proves more effective for weight loss compared to semaglutide, with higher doses of tirzepatide delivering a more substantial weight loss effect. However, it’s important to note that high-dose tirzepatide (15 mg) is associated with an increased risk of vomiting compared to low- and medium-dose semaglutide. Overall, these findings offer valuable insights into optimizing the treatment approach for individuals with type 2 diabetes.