Retatrutide
    Comparison

    Retatrutide vs Every Weight Loss Drug: Complete Chart

    How the triple agonist stacks up against every weight loss option available in 2026.

    Last updated: April 1, 2026-12 min read

    Retatrutide has produced the highest average weight loss ever recorded in a clinical trial for an obesity medication. But how does it compare to every other option? This chart puts it all in perspective.

    Complete Comparison Chart

    Weight Loss Drug Comparison (2026)

    Drug/InterventionMechanismAvg Weight LossStatus
    Retatrutide 12mgGLP-1/GIP/Glucagon24.2%Phase 3
    Tirzepatide 15mgGIP/GLP-122.5%Approved
    Semaglutide 2.4mgGLP-115-17%Approved
    Liraglutide 3mg (Saxenda)GLP-18%Approved
    Naltrexone-bupropion (Contrave)Opioid/dopamine5-6%Approved
    Phentermine-topiramate (Qsymia)Stimulant/anticonvulsant7-10%Approved
    Orlistat (Alli/Xenical)Fat absorption blocker3-5%Approved
    Gastric sleeve surgerySurgical restriction20-25%Surgical
    Roux-en-Y bypassSurgical bypass25-35%Surgical
    Diet and exercise aloneLifestyle3-5%N/A

    Retatrutide's Unique Advantages

    • Highest pharmacological weight loss: 24.2% exceeds all approved medications
    • Liver fat reduction: 80-90% liver fat reduction -- unmatched by any other drug
    • Energy expenditure: Glucagon component increases metabolic rate -- unique among GLP-1 drugs
    • Non-surgical: Approaches bariatric surgery results without the knife
    • Weight curve not plateaued: Results at 48 weeks still declining, suggesting even greater potential

    Retatrutide Limitations

    • Phase 3 only: Not yet FDA-approved; Phase 2 data only
    • Limited long-term data: No data beyond 48 weeks yet
    • Heart rate: Modest increase (3-5 bpm) from glucagon component
    • Cost: Brand-name price expected to be premium ($1,200-1,500/month)
    • Availability: Currently only through compounding; Trimi offers early access

    Which Medication Is Right for You?

    The best medication depends on your goals, budget, and medical history. Trimi offers all three generations: semaglutide ($99/mo) for proven efficacy and value, tirzepatide ($125/mo) for enhanced weight loss, and retatrutide for maximum results. Our physicians help match you to the optimal choice.

    Access the Most Effective Options

    Semaglutide $99/mo. Tirzepatide $125/mo. Retatrutide available. All through Trimi.

    Explore Treatments

    Medical Disclaimer

    Cross-trial comparisons have limitations. Retatrutide is investigational. Weight loss results vary individually. Consult your healthcare provider.

    Sources & References

    1. Wilding JPH et al. Once-Weekly Semaglutide in Adults with Overweight or Obesity. NEJM 2021;384:989-1002.
    2. Jastreboff AM et al. Tirzepatide Once Weekly for the Treatment of Obesity. NEJM 2022;387:205-216.
    3. Lincoff AM et al. Semaglutide and Cardiovascular Outcomes in Obesity without Diabetes. NEJM 2023;389:2221-2232.
    4. FDA Prescribing Information for Wegovy (semaglutide) and Zepbound (tirzepatide).

    What does the published clinical evidence show for retatrutide?

    Peer-reviewed evidence: Retatrutide 12 mg produced a mean body weight reduction of approximately 24.2% at 48 weeks in adults with obesity in a Phase 2 trial — the highest published mean weight reduction for any GLP-1-class agent in obesity to date. (Source: Jastreboff et al. Phase 2 trial, NEJM 2023). Trimi is preparing for launch; compounded availability depends on FDA-cleared compounding pathways. Results vary by individual; eligibility is determined by a licensed clinician.

    Retatrutide 12 mg produced a mean body weight reduction of approximately 24.2% at 48 weeks in adults with obesity in a Phase 2 trial — the highest published mean weight reduction for any GLP-1-class agent in obesity to date. — Jastreboff et al. Phase 2 trial, NEJM 2023
    Retatrutide 12 mg reduced HbA1c by approximately 2.02 percentage points at 36 weeks in patients with type 2 diabetes, compared with 1.41 points on dulaglutide 1.5 mg. — Rosenstock et al. Phase 2 T2D trial, Lancet 2023

    Key Takeaways

    • Retatrutide 12 mg produced a mean body weight reduction of approximately 24.2% at 48 weeks in adults with obesity in a Phase 2 trial — the highest published mean weight reduction for any GLP-1-class agent in obesity to date. (Source: Jastreboff et al. Phase 2 trial, NEJM 2023)
    • Retatrutide 12 mg reduced HbA1c by approximately 2.02 percentage points at 36 weeks in patients with type 2 diabetes, compared with 1.41 points on dulaglutide 1.5 mg. (Source: Rosenstock et al. Phase 2 T2D trial, Lancet 2023)
    • Retatrutide is investigational and not FDA-approved as of publication. Trial findings reported here are from Phase 2 / Phase 3 studies in peer-reviewed sources cited below.
    • Eligibility requires evaluation by a licensed clinician: BMI ≥30, or BMI ≥27 with at least one weight-related comorbidity (type 2 diabetes, hypertension, dyslipidemia, obstructive sleep apnea, cardiovascular disease). Contraindications include personal or family history of medullary thyroid carcinoma, MEN 2 syndrome, pancreatitis, severe gastrointestinal disease, severe renal impairment, pregnancy, and breastfeeding.
    • Common GLP-1 receptor agonist adverse effects include nausea, vomiting, diarrhea, constipation, and gallbladder events. Dose titration over weeks improves tolerability. Severe gastrointestinal symptoms may cause dehydration and increase acute kidney injury risk.
    • This is general information based on the cited evidence, not medical advice. Treatment decisions require evaluation by a licensed clinician familiar with your individual medical history, BMI, and comorbidities.

    Medically Reviewed

    TMRT

    Trimi Medical Review Team

    Clinical review workflow for GLP-1 safety, dosing, and access content

    Team-based medical review process documented in Trimi's Medical Review Policy

    Last reviewed: February 1, 2026

    TCCT

    Written by Trimi Clinical Content Team

    Medical Writers & Healthcare Professionals

    Our clinical content team includes registered nurses, pharmacists, and medical writers who specialize in translating complex medical information into clear, actionable guidance for patients.

    Medically reviewed by Trimi Medical Review Team, Clinical review workflow for GLP-1 safety, dosing, and access content

    What real Trimi patients say

    Verbatim quotes from Trimi's Facebook and Reddit community reviews. First name and last initial preserved per editorial policy.

    Arrived within 24 hours. Easy to use. Comes with everything. The year is so worth it.

    Outcome: Same-day delivery experience

    Veronica LarimoreFacebook
    It's only been 2 weeks since I've been taking the VialsRx meds from Trimi. The medication showed up pretty quickly (about 4 days after getting approval from Trimi prescriber) and I received 3 vials for my first 3 months on the subscription. For the price and convenience my take is that Trimi and VialsRx is good.

    Outcome: 4-day delivery; 3 vials for first 3 months; price + convenience verdict positive

    Editorial Standards

    Trimi publishes patient education using a medical-review workflow, source-based claim checks, and dated updates for fast-changing pricing, access, and safety topics.

    Review our Editorial Policy and Medical Review Policy for more details about sourcing, updates, and reviewer attribution.

    Scientific References

    1. Jastreboff AM, Kaplan LM, Frías JP, et al. (2023). Triple-Hormone-Receptor Agonist Retatrutide for Obesity — A Phase 2 Trial. New England Journal of Medicine.Read StudyDOI: 10.1056/NEJMoa2301972
    2. Rosenstock J, Frias J, Jastreboff AM, et al. (2023). Retatrutide, a GIP, GLP-1 and glucagon receptor agonist, for people with type 2 diabetes: a randomised, double-blind, placebo and active-controlled, parallel-group, phase 2 trial. The Lancet.Read StudyDOI: 10.1016/S0140-6736(23)01053-X
    3. ClinicalTrials.gov (2024). A Study of Retatrutide (LY3437943) in Participants Who Have Obesity or Are Overweight (TRIUMPH-1) — NCT05929066. ClinicalTrials.gov.Read Study
    4. Garvey WT, Mechanick JI, Brett EM, et al. (2024). American Association of Clinical Endocrinology / American College of Endocrinology Comprehensive Clinical Practice Guidelines for Medical Care of Patients with Obesity. Endocrine Practice.Read StudyDOI: 10.4158/EP161365.GL
    5. American Heart Association (2021). Obesity and Cardiovascular Disease: A Scientific Statement From the American Heart Association. Circulation.Read StudyDOI: 10.1161/CIR.0000000000000973
    6. Apovian CM, Aronne LJ, Bessesen DH, et al. (2015). Pharmacological Management of Obesity: An Endocrine Society Clinical Practice Guideline. Journal of Clinical Endocrinology & Metabolism.Read StudyDOI: 10.1210/jc.2014-3415

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