Tesamorelin in Thailand: Visceral Fat Reduction & Metabolic Therapy

Tesamorelin is a synthetic GHRH analogue that specifically stimulates pituitary growth hormone release to target visceral adipose tissue reduction and body composition improvement. It is the only GHRH analogue with a clinical indication for visceral fat reduction and is available at Peptides Thailand by physician prescription.

Doctor-prescribed Tesamorelin in Thailand is available at Peptides Thailand under physician supervision, with clinical-grade, COA-verified sourcing. It is prescribed for visceral fat reduction and body composition protocols, particularly for patients with abdominal adiposity or lipodystrophy requiring targeted metabolic intervention.

How Tesamorelin Works

Tesamorelin works by binding to and activating pituitary GHRH receptors, the same receptors that respond to endogenous growth hormone releasing hormone produced by the hypothalamus. This binding triggers pulsatile secretion of growth hormone (GH) from the anterior pituitary, preserving the physiological pulse pattern that distinguishes endogenous GH release from exogenous GH injection. Pulsatile GH secretion then stimulates the liver and peripheral tissues to produce insulin-like growth factor 1 (IGF-1), which mediates many of the downstream metabolic effects including lipolysis in adipose tissue. The mechanism is specific to visceral fat for a well-characterised biological reason: visceral adipocytes have a higher density of GH receptors and are more sensitive to GH-driven lipolysis than subcutaneous adipocytes. This receptor-density difference means that raising GH and IGF-1 through GHRH agonism preferentially mobilises visceral fat while largely sparing subcutaneous fat and lean muscle mass. Tesamorelin does not suppress the hypothalamic-pituitary-adrenal axis or cause the sustained receptor downregulation seen with continuous GH administration, which is why the pulsatile mechanism it produces is considered preferable to direct GH injection for metabolic applications. The net result is selective reduction of intra-abdominal adiposity alongside modest improvements in lipid profiles and glucose metabolism, with effects that are sustained during continued use and reversible on discontinuation.

Medical Review Status

Last reviewed: June 2026 | Next review: December 2026

Written by Dr. Michael Ackland · Medically reviewed by Dr. Ploy Pitayanon, MD, licensed by the Medical Council of Thailand

At a Glance

Peptide

Tesamorelin

Category

Weight Loss

Dosage

1-2 mg per injection, individualized by your physician based on clinical indication, IGF-1 response, and tolerance

Frequency

Once daily subcutaneous injection, typically in the evening to align with the physiological overnight GH pulse

Administration

Subcutaneous injection under physician supervision with a prescribed dose and monitoring schedule. Self-sourcing or self-dosing outside a physician-supervised plan is not supported by this clinic.

Potential Benefits

  • · FDA-approved for HIV-associated lipodystrophy (Egrifta, 2010): the only GHRH analogue with a completed phase 3 regulatory programme and an approved indication
  • · Selective visceral fat reduction: clinical trials demonstrated significant reductions in intra-abdominal adipose tissue (IAAT) compared to placebo, with minimal effect on subcutaneous fat
  • · Preserves lean muscle mass: the pulsatile GH secretion mechanism avoids the muscle catabolism associated with caloric restriction alone

Quality Matters

Why we use Clinical-Grade only

Certificate of Analysis

Every peptide we dispense comes with a third-party COA confirming purity and potency, never grey-market sourced.

Compounded in Thailand

Manufactured in Thai FDA-licensed compounding laboratories operating under GMP standards.

Physician-prescribed only

No dispensing without a prescription. Every protocol begins with a licensed physician consultation and clinical assessment.

Medical Disclaimer

The information on this page is intended for educational and informational purposes only and should not be considered medical advice, diagnosis, or treatment. Any therapies, consultations, or prescriptions are provided only following assessment by a licensed physician and where clinically appropriate. Individual results may vary and no specific outcomes are guaranteed. Certain compounds discussed may not be approved medicines registered with the Thai FDA for specific therapeutic indications. Nothing here should be interpreted as a recommendation to self diagnose, self treat, or replace consultation with a qualified healthcare professional.

Research compound - Medical supervision required
Dr. Ploy Pitayanon, MD

Doctor's Note

Dr. Ploy Pitayanon, MD, Medical Lead

Tesamorelin requires careful medical supervision and individualized dosing. Our clinics in Chiang Mai and Phuket provide comprehensive assessment, monitoring, and ongoing support to ensure safe and effective treatment outcomes.

Potential Benefits

FDA-approved for HIV-associated lipodystrophy (Egrifta, 2010): the only GHRH analogue with a completed phase 3 regulatory programme and an approved indication

Selective visceral fat reduction: clinical trials demonstrated significant reductions in intra-abdominal adipose tissue (IAAT) compared to placebo, with minimal effect on subcutaneous fat

Preserves lean muscle mass: the pulsatile GH secretion mechanism avoids the muscle catabolism associated with caloric restriction alone

Improves lipid profiles: reductions in triglycerides and improvements in HDL cholesterol have been observed in clinical trial populations

Supports insulin sensitivity in patients without baseline glucose impairment: distinguished from direct GH injection which can worsen glucose tolerance

Pulsatile GH secretion: preserves physiological release patterns rather than producing the sustained supraphysiological GH levels associated with exogenous GH use

Documented IGF-1 elevation: measurable and trackable via standard blood tests, providing a clinical biomarker for treatment response and dose appropriateness

Well-characterised side effect profile from phase 3 data: injection site reactions, fluid retention, and joint discomfort are the primary effects and are generally mild and reversible

Physician-supervised protocols with COA-verified, clinical-grade sourcing: not dispensed as a grey-market research peptide through this clinic

Video consultation available nationwide in Thailand, with physician-prescribed protocols and cold-chain delivery to Bangkok, Phuket, Chiang Mai, and all regions

Speak with a physician

Interested in Tesamorelin?

All protocols require a physician assessment before any prescription is issued. Book a free video consultation with an MCT-licensed doctor.

Treatment Protocol

Dosage

1-2 mg per injection, individualized by your physician based on clinical indication, IGF-1 response, and tolerance

Frequency

Once daily subcutaneous injection, typically in the evening to align with the physiological overnight GH pulse

Duration

12-26 weeks per cycle, reassessed at each clinical review based on IGF-1 levels, visceral fat response, and patient goals

Administration

Subcutaneous injection under physician supervision with a prescribed dose and monitoring schedule. Self-sourcing or self-dosing outside a physician-supervised plan is not supported by this clinic.

Safety guide

Tesamorelin Side Effects & Safety

Frequency, contraindications, and who is a good candidate

Recent Tesamorelin Research

[PubMed] Tesamorelin for HIV-Associated Abdominal Fat: Pooled Analysis of Two Phase 3 Trials (J Clin Endocrinol Metab, 2010)

Pooled analysis of two multicenter, double-blind, placebo-controlled phase 3 trials showing Tesamorelin 2 mg daily produced significant reductions in visceral adipose tissue in HIV-infected patients with excess abdominal fat compared to placebo. Includes safety extension data. This pooled analysis formed the core evidence base for the FDA approval of Tesamorelin (Egrifta) in November 2010.

View on PubMed

[PubMed] Tesamorelin Improves Visceral and Subcutaneous Adipose Tissue Density in People With HIV

In people living with HIV who responded to Tesamorelin, both visceral and subcutaneous fat density improved independent of changes in fat quantity, indicating Tesamorelin improves fat quality in addition to reducing fat volume.

View on PubMed

[PubMed] Body Composition, Hepatic Fat, Metabolic and Safety Outcomes of Tesamorelin: Meta-Analysis of RCTs (Obes Res Clin Pract, 2026)

Meta-analysis of randomised controlled trials evaluating Tesamorelin in HIV-associated lipodystrophy, covering body composition, hepatic fat, and metabolic outcomes. Confirms significant reductions in visceral adipose tissue and hepatic fat fraction across trials, alongside a documented safety profile. Provides the most comprehensive pooled evidence summary for Tesamorelin's established clinical effects.

View on PubMed

[PubMed] Injectable Peptide Therapy in Orthopaedic Sports Medicine: A Narrative Review

Review of therapeutic peptides including Tesamorelin, which has been clinically studied for HIV-associated lipodystrophy. Highlights the established clinical evidence base for Tesamorelin relative to other peptides reviewed and notes the need for more evidence in non-HIV metabolic applications.

View on PubMed

Who Is a Candidate for Tesamorelin?

Tesamorelin has an FDA-approved indication (HIV-associated lipodystrophy) and a broader investigational use in metabolic and body composition applications. The two populations have different candidacy criteria, and a physician assessment is required for either. Book a consultation to discuss your clinical situation.

  • Adults with HIV-associated lipodystrophy: the approved indication, supported by two phase 3 trials and the FDA label; the physician will review antiretroviral therapy, baseline visceral fat measurements, and metabolic parameters
  • Adults with significant visceral adiposity without HIV: investigational use supported by mechanistic and smaller clinical evidence; appropriate for patients where visceral fat is the primary clinical concern rather than total body weight
  • Patients with metabolic syndrome or elevated triglycerides alongside central adiposity: the lipid-improving effects of Tesamorelin are a documented secondary benefit in the HIV trial population
  • Patients who have not responded adequately to lifestyle modification and want a physician-supervised peptide approach targeting visceral fat specifically rather than overall weight loss
  • Individuals with documented IGF-1 levels at the lower end of the normal range for their age, where GHRH agonism may provide a physiologically appropriate correction
  • Patients who are not candidates for GLP-1 class agents (due to contraindications such as personal or family history of medullary thyroid carcinoma, pancreatitis, or significant GI disease) and need an alternative approach to visceral fat

The physician assessment for Tesamorelin candidacy includes reviewing baseline IGF-1 levels (to establish a safe starting point and monitor response), fasting glucose and HbA1c (Tesamorelin can modestly affect glucose handling), lipid panel, and any history of cancer, pituitary disease, or active medical conditions that would contraindicate GH-axis stimulation. IGF-1 is both a clinical biomarker for treatment response and a safety parameter: excessive elevation of IGF-1 is associated with increased cancer risk in observational data, which is why it is monitored regularly during the protocol.

Tesamorelin is not a general weight-loss peptide. It targets visceral fat specifically and works through the GH axis rather than the appetite and satiety pathways targeted by GLP-1 agents. Patients whose primary goal is overall weight loss rather than visceral fat reduction specifically may be better served by a different protocol. Discuss your goals with a physician to determine which approach best fits your clinical picture.

FDA-Approved vs Investigational Use: Understanding the Distinction

Tesamorelin holds the only FDA approval of any GHRH analogue for any indication. This does not mean that use outside the approved HIV lipodystrophy indication is prohibited: physicians routinely prescribe approved medicines for uses beyond their label when clinical evidence supports it. It does mean that use in patients without HIV is investigational and is treated accordingly, with full disclosure and physician oversight.

  • FDA approval (2010, Egrifta): Tesamorelin 2 mg daily for the reduction of excess abdominal fat in HIV-infected adults with lipodystrophy. Two phase 3 randomised controlled trials supported this approval.
  • Investigational use (non-HIV populations): physicians may prescribe Tesamorelin for visceral fat reduction and metabolic support in patients without HIV based on the mechanistic evidence and available clinical data; this is off-label prescribing rather than unapproved use
  • Regulatory distinction from other GH peptides on this site: CJC-1295, Ipamorelin, and other GHRH-family peptides have no approved indication in any country; Tesamorelin's FDA approval reflects a completed phase 3 programme that no other GHRH analogue has undergone
  • Clinical significance: the phase 3 trial data provides a more robust safety and efficacy evidence base than is available for most peptides, including defined adverse event rates, population characteristics, and CT-measured visceral fat outcomes
  • Sourcing implication: Tesamorelin (Egrifta) is a licensed pharmaceutical product; clinical-grade preparations should meet the same purity and concentration standards as the approved product, which is why COA verification is required for every batch dispensed through this clinic

The FDA approval of Tesamorelin for HIV-associated lipodystrophy was based on two randomised, placebo-controlled, double-blind phase 3 trials demonstrating significant reductions in visceral adipose tissue area as measured by CT scan, alongside improvements in trunk fat and lipid parameters. The approval was granted in November 2010 to Theratechnologies. This regulatory history means Tesamorelin has a substantially more complete clinical evidence base than any other GHRH analogue, including published safety data from a regulatory submission.

For patients without HIV considering Tesamorelin for visceral fat or metabolic support, the investigational status means the evidence is mechanistic and derived from smaller studies and the HIV trial population, rather than from a dedicated phase 3 programme in a metabolic or non-HIV population. Physicians consider this evidence alongside the individual patient's clinical picture to make a prescribing decision. The stronger evidence base compared to other peptides is a legitimate factor in that assessment, but it does not change the requirement for physician oversight and individualised monitoring.

Tesamorelin vs CJC-1295 and Ipamorelin: How the GH Peptides Compare

Tesamorelin, CJC-1295, and Ipamorelin all increase growth hormone levels but through different mechanisms, with different evidence bases and different clinical applications. The choice between them depends on the clinical goal, the patient's history, and the physician's assessment of which mechanism is most appropriate.

  • Tesamorelin acts directly on pituitary GHRH receptors, mimicking endogenous GHRH; it has phase 3 trial data for visceral fat reduction and the most robust evidence base of any GHRH analogue
  • CJC-1295 is a longer-acting GHRH analogue with a DAC modification that extends its half-life to days rather than minutes; it is used for sustained GH pulse amplification but has no approved indication and a smaller evidence base than Tesamorelin
  • Ipamorelin is a GHRP (growth hormone releasing peptide), not a GHRH analogue; it acts on ghrelin receptors rather than GHRH receptors and stimulates GH secretion through a different pathway; it is often combined with CJC-1295 to amplify GH release through dual-pathway stimulation
  • Tesamorelin is the preferred choice when the primary clinical goal is visceral fat reduction specifically, given the direct CT-scan evidence from phase 3 trials
  • CJC-1295 with or without Ipamorelin may be more appropriate when the goal is broader GH axis augmentation (body composition, recovery, sleep quality) rather than visceral fat reduction as the primary endpoint
  • No head-to-head clinical trials have directly compared Tesamorelin to CJC-1295 or Ipamorelin; the choice is made on mechanistic grounds and physician clinical judgment

The GHRH receptor agonism shared by Tesamorelin and CJC-1295 means both peptides work through the same pituitary pathway, but their pharmacokinetic profiles differ substantially. Tesamorelin has a very short half-life (minutes) and is administered daily to produce a physiological GH pulse each evening. CJC-1295 with DAC has a half-life measured in days, producing a more sustained baseline elevation of GH rather than a single daily pulse. Whether pulsatile or sustained GH elevation is preferable for a given clinical goal is a legitimate subject of physician assessment.

Ipamorelin's ghrelin receptor mechanism is complementary rather than overlapping with GHRH receptor agonism: the two pathways act on different pituitary cell populations and can be combined to produce additive GH release. This is why CJC-1295 and Ipamorelin are commonly used together. Tesamorelin is not typically combined with Ipamorelin in the same way, partly because Tesamorelin already has a well-defined dose and partly because the FDA-approved protocol is a standalone daily injection. The physician will assess whether a combined or standalone protocol is more appropriate given the patient's specific clinical goals. Discuss your options in a consultation.

What to Expect: Protocol, Monitoring, and Treatment Response

Tesamorelin produces measurable, trackable changes in IGF-1 levels and body composition. Clinical response is typically visible on blood tests within 4-8 weeks and on physical measurements over 12-26 weeks. Monitoring is structured and straightforward: IGF-1, fasting glucose, and clinical review at defined intervals.

  • IGF-1 measurement at baseline and at 4-8 weeks into the protocol: the primary biomarker for treatment response and the safety parameter for dose appropriateness
  • Fasting glucose and HbA1c at baseline: Tesamorelin can modestly affect glucose handling; diabetic or pre-diabetic patients require closer monitoring throughout the protocol
  • Physical measurements (waist circumference, body weight) and clinical review at 12 weeks to assess initial response and determine whether to continue, adjust, or discontinue
  • Visceral fat reduction is typically most pronounced in the first 12-26 weeks; the phase 3 trials ran to 26 weeks as the primary endpoint window
  • GH-related side effects (joint discomfort, fluid retention, tingling) are most likely in the early weeks and at higher doses; the physician adjusts the dose based on IGF-1 response and side effect profile
  • Effects are reversible on discontinuation: visceral fat tends to return toward baseline over months after stopping, which is why some patients choose maintenance protocols at a lower dose or frequency under physician supervision

The monitoring approach for Tesamorelin is more structured than for some other peptides because IGF-1 provides a direct, quantifiable biomarker of pharmacological activity. An IGF-1 level that rises above the age-adjusted upper limit of normal indicates the dose is producing supraphysiological GH stimulation and should be reduced. This makes Tesamorelin a relatively well-monitored peptide in clinical practice: the physician has an objective blood test to guide dosing rather than relying only on symptom reports and physical measurements.

Patients should expect a gradual rather than rapid change in body composition. In the phase 3 HIV trials, the primary CT-measured visceral fat reduction was statistically significant by week 8 and reached its peak by week 26. In clinical practice outside trials, the timeline and magnitude of response vary based on baseline visceral fat, dose, adherence, and individual metabolic factors. The physician will discuss realistic expectations at the initial consultation and reassess response at each scheduled review. Book a consultation to understand what the protocol would look like for your specific situation.

Visceral Fat, Metabolic Syndrome, and Why Selective Reduction Matters

Visceral fat is metabolically distinct from subcutaneous fat: it secretes inflammatory cytokines, drives insulin resistance, and is independently associated with cardiovascular disease risk in a way that subcutaneous fat is not. Tesamorelin targets visceral fat selectively, which is both its clinical differentiator and the reason its mechanism is relevant to metabolic syndrome management.

Visceral adipose tissue (VAT) wraps around the abdominal organs and is drained by the portal circulation directly into the liver, where free fatty acids and inflammatory signals from visceral fat have direct metabolic effects on hepatic glucose production, lipid metabolism, and insulin sensitivity. This anatomical position means visceral fat has a disproportionate effect on metabolic health relative to its volume: individuals with high VAT but relatively normal total body weight have significantly elevated metabolic and cardiovascular risk compared to individuals with the same total body fat distributed primarily subcutaneously.

Tesamorelin's selective reduction of visceral fat is mechanistically explained by the higher density of GH receptors in visceral adipocytes compared to subcutaneous adipocytes: the same increase in GH and IGF-1 produces a proportionally greater lipolytic response in visceral fat. This selectivity is clinically important because general weight loss interventions reduce both visceral and subcutaneous fat without specificity, whereas Tesamorelin's GH-mediated mechanism preferentially addresses the metabolically active visceral compartment.

The downstream metabolic effects observed in Tesamorelin clinical trials, including improvements in triglycerides and in some cases modest improvements in glucose metabolism, are consistent with the known metabolic consequences of reducing visceral fat specifically rather than fat in general. Patients with metabolic syndrome characterised by central adiposity, elevated triglycerides, reduced HDL, and glucose impairment are a population where physician-supervised Tesamorelin use may address the metabolically active fat depot that is driving their risk profile. This requires physician assessment to confirm that the GH-axis mechanism is appropriate given the patient's glucose status and overall metabolic picture.

Accessing Tesamorelin in Thailand: Prescription, Sourcing, and Consultation

  • Physician assessment required: Tesamorelin is dispensed only following a clinical assessment that reviews IGF-1 baseline, glucose status, cancer history, and contraindications
  • Clinical-grade, COA-verified sourcing: every batch is accompanied by a Certificate of Analysis confirming purity and concentration; no grey-market or unverified research-peptide sourcing
  • Baseline bloodwork included: IGF-1, fasting glucose, HbA1c, and lipid panel at minimum; the physician determines what additional testing is appropriate based on the patient's history
  • Structured monitoring plan: follow-up IGF-1 measurement at 4-8 weeks, physical response assessment at 12 weeks, and ongoing review throughout the protocol
  • Video consultations available nationwide in Thailand: patients in Bangkok, Phuket, Koh Samui, Pattaya, Hua Hin, Chiang Mai, Chiang Rai, and all other regions can book a remote consultation
  • Cold-chain delivery: Tesamorelin preparations require refrigeration and are shipped with appropriate temperature control to maintain peptide stability

Tesamorelin is not available as an over-the-counter supplement or as a self-administered research peptide through this clinic. The GH-axis mechanism requires clinical monitoring, and the specific requirement to track IGF-1 levels is a safety parameter that cannot be managed responsibly without access to blood testing. Patients who self-source Tesamorelin and self-dose without physician oversight cannot confirm whether their IGF-1 is within the safe range, cannot adjust the dose appropriately, and cannot identify early signs of adverse effects that require clinical attention.

For patients who have used GH-related peptides previously and are familiar with the monitoring requirements, the physician assessment at Peptides Thailand involves reviewing that prior history, including what IGF-1 results were achieved and what dose was used. This context helps the physician individualize the starting dose and monitoring frequency. For patients new to GH-axis peptides, the consultation will cover the mechanism, what to expect from the protocol, and the full monitoring plan before any prescription is issued. Book a consultation to begin the assessment process.

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