PEG MGF (2 mg vial)

Protocol Overview

Concise summary of the regimen.

Dosing & Reconstitution

Frequency: Inject once daily subcutaneously. Pegylation extends MGF's half-life, allowing systemic once-daily SC dosing instead of frequent intramuscular injections.

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 to 8 °C, protected from light. At 0.667 mg/mL, 1 unit = 0.01 mL » 6.67 mcg on a U-100 insulin syringe.

Storage Instructions

Proper storage preserves peptide quality.

• Lyophilized: store at -20 °C (-4 °F) in dry, dark conditions; stable for 12+ months.
• Reconstituted: refrigerate at 2 to 8 °C (35.6 to 46.4 °F); avoid freeze-thaw.
• Allow vials to reach room temperature before opening to reduce condensation uptake.

Supplies Needed

Plan based on an 8 to 16 week daily protocol with gradual titration.

Peptide Vials (PEG MGF, 2 mg each):

• 8 weeks: ~10 vials. 12 weeks: ~17 vials. 16 weeks: ~24 vials.

Insulin Syringes (U-100):

• Per week: 7 syringes (1/day).
• 8 weeks: 56. 12 weeks: 84. 16 weeks: 112.

Bacteriostatic Water (10 mL bottles):

• 8 weeks (10 vials): 3 bottles. 12 weeks (17 vials): 6 bottles. 16 weeks (24 vials): 8 bottles.

Alcohol Swabs:

• Per week: 14 swabs.
• 8 weeks: 112 (2 x 100-count). 16 weeks: 224 (3 x 100-count).

Important Notes

Practical considerations for consistency and safety.

• Use new sterile insulin syringes; dispose in a sharps container.
• Rotate injection sites (abdomen, thighs, upper arms) to reduce local irritation.
• Inject slowly; wait a few seconds before withdrawing the needle.
• Document daily dose and site rotation to maintain consistency.
• No clinical trials of PEG MGF have been completed; effects have been demonstrated in animal and cell

models only.

How This Works

MGF is a splice variant of IGF-1 that is expressed in muscle tissue following mechanical loading or damage. Unlike systemic IGF-1, MGF acts locally to activate satellite cells and initiate muscle repair processes through its unique C-terminal E peptide domain. Pegylation of MGF extends its half-life, allowing for once-daily subcutaneous administration instead of the frequent local injections required for native MGF. Animal studies have shown that MGF analogues can enhance muscle regeneration, bone healing, and cartilage repair when administered over several weeks.

Benefits & Side Effects

Observations from preclinical and cell-based research.

• Animal studies demonstrate enhanced muscle, bone, and cartilage regeneration with MGF analogues

administered over multiple weeks.

• MGF promotes myogenic precursor cell proliferation and improves muscle repair in models of injury or

depletion.

• No human clinical trials have been completed; safety and efficacy in humans remain unestablished.
• Generally well tolerated in preclinical models; mild injection-site reactions may occur with subcutaneous

administration.

Lifestyle Factors

Complementary strategies for best outcomes.

• Combine with progressive resistance training to maximize muscle growth signals and satellite cell

activation.

• Maintain adequate protein intake (1.6 to 2.2 g/kg body weight daily) to support muscle protein synthesis.
• Prioritize sleep (7 to 9 hours nightly) and manage training stress to optimize recovery and adaptation.
• Consider timing around training sessions, though optimal timing has not been established in human

studies.

Injection Technique

General subcutaneous guidance from clinical best-practice resources.

1. Clean the vial stopper and skin with alcohol; allow to dry.
2. Pinch a skinfold; insert the needle at 45 to 90 degrees into subcutaneous tissue.
3. Do not aspirate for subcutaneous injections; inject slowly and steadily.
4. Wait 5 to 10 seconds before withdrawing; dispose of syringe in sharps container.
5. Rotate sites systematically (abdomen, thighs, upper arms) to avoid lipohypertrophy.

References

Source citations for further reading.

1. Goldspink G. MGF: a local growth factor or a local tissue repair factor? (Physiological Society).
2. Expression of IGF-1 isoforms after exercise-induced muscle damage in humans (In Vivo).
3. Mechano growth factor E peptide promotes osteoblasts proliferation and bone-defect healing in rabbits (International Orthopaedics).
4. A synthetic mechano growth factor E peptide enhances myogenic precursor cell transplantation success (American Journal of Transplantation).