Contraindications: This peptide has 5 known contraindication(s). See Safety section
Metabolic & Fat LossUse Caution

Pemvidutide

Also known as: ALT-801, Dual GLP-1/glucagon agonist

Research Only
Phase 1-2
MW: 4327.8 g/mol • 29 amino acids

Pemvidutide is a dual GLP-1/glucagon receptor agonist peptide under development for metabolic dysfunction-associated steatotic liver disease (MASLD) and obesity. Clinical trials show promising efficacy for weight loss and liver fat reduction with manageable side effects.

â–¶ Pemvidutide in 30 Seconds

Research overview only. Not medical advice.

Half-Life

72-96 hours

Typical Dose

1.2-2.4 mg weekly

Frequency

Once weekly

Routes

Subcutaneous

Half-Life Visualization

Comparing 3 peptides. Pemvidutide has a half-life of 3d 12h, reaching 50% concentration at 3d 12h and 25% at 7d. Semaglutide has a half-life of 7d, reaching 50% concentration at 7d and 25% at 14d. Liraglutide has a half-life of 13h, reaching 50% concentration at 13h and 25% at 1d 2h.

Half-Life Decay Curve

Concentration over time assuming initial dose = 100%

Pemvidutide(t1/2: 3d 12h +/- 12h)
Semaglutide(t1/2: 7d +/- 8h)
Liraglutide(t1/2: 13h +/- 2h)
Peptide Half-Life Comparison ChartVisualization showing how peptide concentrations decay over time. Pemvidutide has a half-life of 3d 12h. Semaglutide has a half-life of 7d. Liraglutide has a half-life of 13h.

Use arrow keys to navigate: Left/Right for time, Up/Down for peptides

Shaded areas represent reported half-life variability from published studies.

PeptideHalf-Life50% at25% at12.5% atRedose Window
Pemvidutide
3d 12h3d 12h7d10d 12h3d 12h - 7d
Semaglutide
7d7d14d21d7d - 14d
Liraglutide
13h13h1d 2h1d 15h13h - 1d 2h

Comparing Pemvidutide with Semaglutide and Liraglutide

Open Full Comparison Tool

Overview

Pemvidutide represents a novel approach to metabolic disease treatment as a dual GLP-1/glucagon receptor agonist. Unlike single-target therapies, this investigational peptide simultaneously activates both the GLP-1 receptor (promoting insulin sensitivity and satiety) and the glucagon receptor (enhancing energy expenditure and fat oxidation).

Current Phase 2 clinical trials are evaluating pemvidutide's efficacy in metabolic dysfunction-associated steatotic liver disease (MASLD), obesity, and type 2 diabetes. The dual mechanism may offer superior metabolic benefits compared to GLP-1-only agonists like semaglutide, particularly for liver fat reduction and sustained weight loss.

The peptide is administered as a once-weekly subcutaneous injection, similar to other long-acting incretin therapies. Early clinical data suggests significant improvements in liver fat content, body weight, and metabolic parameters with a safety profile consistent with other GLP-1 receptor agonists.

Mechanism of Action

Pemvidutide's dual receptor activation creates complementary metabolic effects:

GLP-1 Receptor Activation:

  • Stimulates glucose-dependent insulin secretion from pancreatic beta cells
  • Inhibits glucagon release when glucose levels are elevated
  • Slows gastric emptying, promoting satiety and reducing food intake
  • Preserves beta cell mass and function
  • Reduces hepatic glucose production

Glucagon Receptor Activation:

  • Increases energy expenditure through enhanced thermogenesis
  • Promotes lipolysis and fat oxidation, particularly in liver and adipose tissue
  • Stimulates hepatic fatty acid oxidation, reducing liver fat accumulation
  • May improve insulin sensitivity through metabolic remodeling
  • Enhances ketogenesis during fasting states

This dual approach addresses multiple pathways involved in metabolic dysfunction, potentially offering superior efficacy compared to single-target therapies. The glucagon component specifically targets hepatic steatosis, making pemvidutide particularly promising for MASLD treatment.

Research Summary

Clinical development of pemvidutide includes 5 completed or ongoing human studies, with 9 peer-reviewed publications documenting its therapeutic potential.

Key Clinical Trials

IMPACT Trial (NCT05989711): Completed Phase 2 study in subjects with MASLD showed significant liver fat reduction after 24 weeks of treatment. Participants receiving pemvidutide demonstrated dose-dependent improvements in hepatic steatosis measured by MRI-PDFF (proton density fat fraction).

RECLAIM Study (NCT06987513): Active Phase 2 trial evaluating pemvidutide's efficacy and safety in metabolic dysfunction. Preliminary data suggests meaningful weight loss and metabolic improvements with weekly dosing.

RESTORE Trial (NCT07009860): Currently recruiting Phase 2 study examining pemvidutide in a broader metabolic population, including subjects with obesity and pre-diabetes.

Published Research Findings

A 2025 randomized controlled trial published in Journal of Hepatology demonstrated pemvidutide's efficacy in MASLD patients. After 24 weeks, subjects showed:

  • 30-40% reduction in liver fat content
  • 8-12% body weight loss (dose-dependent)
  • Improved insulin sensitivity markers
  • Favorable lipid profile changes

Meta-analysis data from 2026 confirmed consistent efficacy across multiple trials, with manageable gastrointestinal side effects similar to other GLP-1 agonists.

Dosage Guidelines

Clinical trial dosing protocols inform current research use parameters:

ParameterValue
Starting dose0.6 mg weekly
Maintenance dose1.2-2.4 mg weekly
Escalation scheduleIncrease by 0.6 mg every 4 weeks
Maximum dose2.4 mg weekly
AdministrationSubcutaneous injection
Injection sitesAbdomen, thigh, upper arm

Dose Escalation Protocol:

  • Weeks 1-4: 0.6 mg weekly
  • Weeks 5-8: 1.2 mg weekly
  • Weeks 9+: 1.8-2.4 mg weekly (based on tolerance)

Higher doses (2.4 mg) showed greater efficacy in clinical trials but increased gastrointestinal side effects. Gradual escalation minimizes adverse events while optimizing therapeutic response.

Safety Profile

Clinical trial safety data indicates pemvidutide is generally well-tolerated with a side effect profile consistent with GLP-1 receptor agonists.

Common Side Effects (>10% incidence):

  • Nausea (mild to moderate, typically transient)
  • Diarrhea
  • Decreased appetite
  • Vomiting
  • Constipation
  • Injection site reactions

Less Common but Notable:

  • Hypoglycemia (especially with concurrent diabetes medications)
  • Gallbladder disorders
  • Acute pancreatitis (rare)
  • Thyroid C-cell tumors (theoretical risk based on animal data)

Monitoring Recommendations:

  • Regular glucose monitoring in diabetic patients
  • Periodic assessment of pancreatic enzymes
  • Thyroid function evaluation if symptoms develop
  • Gallbladder imaging if abdominal pain occurs

Most gastrointestinal effects resolve within 2-4 weeks of dose initiation or escalation. Serious adverse events were rare in clinical trials, with discontinuation rates of 5-8%.

Stacking

As an investigational compound, formal stacking protocols are not established. However, clinical trials have examined pemvidutide alongside standard diabetes and metabolic therapies:

Potentially Compatible:

  • Metformin (may enhance metabolic benefits)
  • SGLT2 inhibitors (complementary glucose-lowering effects)
  • Statins (for comprehensive metabolic management)

Requires Careful Monitoring:

  • Insulin (dose reduction typically necessary)
  • Sulfonylureas (hypoglycemia risk)
  • Other GLP-1 agonists (not recommended due to overlap)

Research Combinations Under Investigation: Some trials are exploring pemvidutide with complementary metabolic agents, though specific protocols remain proprietary. The dual mechanism may reduce need for multiple medications compared to single-target therapies.

Given the experimental nature of pemvidutide, any combination use should only occur within supervised clinical trial settings until safety and efficacy are fully established.

References

  1. Effect of pemvidutide, a GLP-1/glucagon dual receptor agonist, on MASLD: A randomized, double-blind, placebo-controlled study. (2025). Journal of hepatology. DOI PubMed
  2. Approved and Emerging Hormone-Based Anti-Obesity Medications: A Review Article. (2024). Indian journal of endocrinology and metabolism. DOI PubMed
  3. Multifunctional incretin peptides in therapies for type 2 diabetes, obesity and associated co-morbidities. (2025). Peptides. DOI PubMed
  4. Safety and efficacy of 24 weeks of pemvidutide in metabolic dysfunction-associated steatotic liver disease: A randomized, controlled clinical trial. (2025). JHEP reports : innovation in hepatology. DOI PubMed
  5. Glucagon-like peptide 1 receptor agonists in substance use disorders: A systematic review of ClinicalTrials.Gov. (2026). Addictive behaviors reports. DOI PubMed
  6. Review: Special Issue: Real-world evidence on the use of GLP1 receptor agonists: Emerging concepts in obesity management: focus on glucagon receptor agonist combinations. (2025). Drugs in context. DOI PubMed
  7. Muscle Loss in Obesity Therapy as a Therapeutic Target: Trial Design and Endpoints for Regulatory Discussions. (2025). Journal of cachexia, sarcopenia and muscle. DOI PubMed
  8. Systemic Pharmacokinetic Principles of Therapeutic Peptides. (2026). Clinical pharmacokinetics. DOI PubMed
  9. Efficacy and safety of pemvidutide in metabolic dysfunction-associated steatohepatitis: a GRADE-assessed meta-analysis of randomized controlled trials. (2026). Naunyn-Schmiedeberg's archives of pharmacology. DOI PubMed

Get Our Free Peptide Research Guide

100 essential tips for safe peptide research, delivered as a free PDF.

Need Research Supplies?

Syringes, bacteriostatic water, vials, alcohol swabs, and more. Everything you need for peptide research.

Browse Supplies