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Growth hormone research · RESEARCH PROFILE

Tesamorelin

A GHRH analogue with research in specific metabolic and endocrine settings.

3 specifications·8 source documents·Source updated Jun 14, 2026

At a glance

A GHRH analogue with research in specific metabolic and endocrine settings.

This profile separates the compound’s scientific background from specification-specific preparation and source schedules. Begin with the research findings and limitations, then select the formulation you want to examine.

How it works

Tesamorelin acts through growth hormone-releasing hormone receptors and influences downstream GH and IGF-1 signaling. The clinical meaning of this response depends on the studied condition.[2][3][4]

Potential benefits & side effects

Interpret each outcome in the context of the study population, formulation and evidence type. Research findings do not establish a personal treatment outcome.

Potential benefits & research findings

Visceral-fat findings in HIV-associated lipodystrophy are a specific evidence context. They should not be generalized to all weight-management goals or research formulations.[3][4]

Read the original publications to see the measured endpoints, comparator, duration and uncertainty. Mechanistic plausibility and a favorable experimental result are different from demonstrated clinical benefit.

Side effects & evidence limitations

Interpret the reported adverse effects together with the study population, route and observation period. Small or short studies can miss uncommon and delayed harms. Evidence from a related compound does not establish the safety of Tesamorelin.

A comprehensive adverse-effect profile is not established by the source record. Consult the cited studies for what was measured and what remains uncertain.

Sources are available for independent reading. Individual claims and research schedules have not yet undergone an independent clinical review by Pep Science.

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SPECIFICATIONS & SOURCE SCHEDULES

Explore a vial size

Select the exact formulation. Vial content, target dose and prepared concentration are different measurements.

Showing 20 mg · 1 source tables

Source-derived research information. Table phases retain the source’s actual duration; open-ended phases are not converted into a fixed eight-week course. Review the original study before interpreting a schedule.

Standard FDA-Approved Protocol (3.0 mL = ~6.67 mg/mL)

Week 1Weeks 2–12+
WeekDaily Dose (mg / mcg)Units (per injection) (mL)
Week 11 mg / 1000 mcg15 units (0.15 mL)
Weeks 2–12+2 mg / 2000 mcg30 units (0.30 mL)

Frequency: Inject once daily subcutaneously, preferably in the evening to coincide with nocturnal GH release[5][6]. The 2 mg daily dose is the standard FDA-approved regimen for HIV lipodystrophy[7]. A one-week titration at 1 mg may improve tolerability before advancing to the full 2 mg dose.

Additional schedule context & duration

Concise summary of the FDA-approved once-daily regimen.

  • Goal: Reduce visceral adipose tissue and improve lipid profiles through sustained GH/IGF-1 elevation[3][4].
  • Schedule: Daily subcutaneous injections for 12–26 weeks (extendable to 52 weeks with medical supervision)[3].
  • Dose: 2 mg (2000 mcg) daily after Week 1 titration.
  • Reconstitution: 3.0 mL per 20 mg vial (~6.67 mg/mL) for accurate measurement.
  • Storage: Lyophilized refrigerated; reconstituted refrigerated up to 7 days; avoid freeze-thaw.

FDA-approved daily dosing approach with tolerability titration.

  • Week 1: 1 mg (1000 mcg) once daily to assess tolerability.
  • Weeks 2+: 2 mg (2000 mcg) once daily (standard FDA-approved dose)[7][7].
  • Frequency: Once per day (subcutaneous), preferably in the evening.
  • Cycle Length: 12–26 weeks; clinical trials support up to 52 weeks with monitoring[3].
  • Timing: Evening administration recommended; rotate injection sites.

Read this source protocol ↗ · View cited documents ↓

Preparation

Preparation and stability depend on the formulation, diluent, container and handling. The source-specific notes below apply to the selected record.
Reconstitution Steps
  1. Draw 3.0 mL bacteriostatic water with a sterile syringe.
  2. Inject slowly down the vial wall; avoid foaming.
  3. Gently swirl until dissolved (do not shake).
  4. Label and refrigerate at 2–8 °C (35.6–46.4 °F), protected from light.
  5. Use within 7 days when reconstituted with bacteriostatic water[1].

Important: This guide is for educational purposes only and is not medical advice.

Storage Instructions

Proper storage preserves peptide quality and efficacy.

  • Lyophilized: Store at 2–8 °C (35.6–46.4 °F); newer formulations (Egrifta SV) stable at 20–25 °C (68–77 °F) before reconstitution[1].
  • Reconstituted (with bacteriostatic water): Refrigerate at 2–8 °C (35.6–46.4 °F); use within 7 days[1].
  • Reconstituted (with sterile water): Use immediately; discard any unused portion[1].
  • Do not freeze reconstituted solution; avoid repeated freeze-thaw cycles.

Injection Technique

Subcutaneous injection best practices from clinical guidelines[8].

  • Clean the vial stopper and skin with alcohol swabs; allow to air-dry completely.
  • Pinch a skinfold at the injection site (abdomen preferred, at least 2 inches from navel)[6].
  • Insert the needle at 90° (if adequate subcutaneous fat) or 45° (if lean)[8].
  • Release the pinch, then inject slowly; wait 2–3 seconds before withdrawing.
  • Rotate injection sites systematically (left/right abdomen, thighs, upper arms) to prevent lipohypertrophy[6].
  • Dispose of used syringes immediately in a puncture-proof sharps container[8].

Materials & quantity planning

Source materials checklist · 20 mg

Plan based on an 8–16 week daily protocol at the standard 2 mg dose (after Week 1 titration).

  • Peptide Vials (Tesamorelin, 20 mg each):

    • 8 weeks ≈ 6 vials (105 mg total)
    • 12 weeks ≈ 9 vials (161 mg total)
    • 16 weeks ≈ 11 vials (217 mg total)
  • Insulin Syringes (U-100, 1 mL capacity):

    • Per week: 7 syringes (1/day)
    • 8 weeks: 56 syringes
    • 12 weeks: 84 syringes
    • 16 weeks: 112 syringes
  • Bacteriostatic Water (10 mL bottles): Use 3.0 mL per vial for reconstitution.

    • 8 weeks (6 vials): 18 mL2 × 10 mL bottles
    • 12 weeks (9 vials): 27 mL3 × 10 mL bottles
    • 16 weeks (11 vials): 33 mL4 × 10 mL bottles
  • Alcohol Swabs: One for the vial stopper + one for the injection site each day.

    • Per week: 14 swabs (2/day)
    • 8 weeks: 112 swabs → recommend 2 × 100-count boxes
    • 12 weeks: 168 swabs → recommend 2 × 100-count boxes
    • 16 weeks: 224 swabs → recommend 3 × 100-count boxes


Calculate a phased quantity

Enter each finite phase from the schedule you are studying. Open-ended phases need an explicit duration. Calculation uses 20 mg per vial and 3 mL per vial.

Complete each phase to calculate totals.

Quantity estimates exclude preparation losses and expiry. Follow the formulation’s handling and disposal requirements.

FOLLOW THE EVIDENCE

References & further reading

Original publications and source documents cited across this product’s variants. A listed source is not an independent endorsement of a dosing schedule.

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Related topics are not interchangeable compounds or formulations.