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Semaglutide vs Tirzepatide 2026: Which GLP-1 Produces Better Weight Loss?

Clinical comparison of NewSelf GLP-1's two medications. STEP-1 semaglutide 14.9% vs SURMOUNT-1 tirzepatide 22.5%. Mechanisms, side effects, and which to choose.

The One-Line Clinical Answer

In every major clinical trial, the NewSelf program's tirzepatide produces greater average weight loss than semaglutide. But average outcomes don't determine individual decisions — your health profile, budget, and physician guidance matter equally.

DimensionSemaglutide Plus⁺Tirzepatide Plus⁺
MechanismGLP-1 agonistGLP-1 + GIP dual agonist
Avg. weight loss~15% (STEP-1)~22.5% (SURMOUNT-1, max dose)
NewSelf price$99.97/mo$144.49/mo
Vitamin blendB12 or GlycineB6 or Glycine
Dosages0.25–2.5mg2.5–15mg

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Semaglutide $99.97/mo Tirzepatide $144.49/mo
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STEP-1 vs SURMOUNT-1

STEP-1 (NEJM, 2021): semaglutide 2.4mg — 14.9% average body weight loss over 68 weeks; 86.4% achieved ≥5% loss. SURMOUNT-1 (NEJM, 2022): tirzepatide 15mg — 22.5% average weight loss over 72 weeks; 57% achieved ≥20% loss — previously achievable only with bariatric surgery. In JAMA Internal Medicine (2023), tirzepatide outperformed semaglutide at every dose across all BMI categories in real-world analysis over 12 months.

Which Should You Choose at NewSelf?

For maximum weight loss with no budget constraint: Tirzepatide Plus⁺ $144.49/mo. The $44.52 premium is justified by meaningfully superior outcomes. For proven first-line GLP-1 at the lowest available market price: Semaglutide Plus⁺ $99.97/mo. Both are clinically excellent at the NewSelf platform's flat-rate pricing. Your physician determines which is medically appropriate for your specific profile. See the full guide: semaglutide vs tirzepatide comparison.

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🔥 NewSelf GLP-1Sema $99.97/mo · Tirz $144.49/mo
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All dosages same price.

Sema $99.97/moTirz $144.49/mo
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