Peptides / Recovery and repair

Synthetic fragment · 24 amino acids · 2,868.2 Da

MGF / PEG-MGF

Not approvedBanned in sport

MGF (mechano growth factor) is a splice form of IGF-1, and PEG-MGF is a peptide from its end with an added PEG chain. Neither is approved, both are banned in sport, and their studies are in animals and lab cells, on bone, tendon and muscle. PepBank shows 330 results on MGF / PEG-MGF from animal and lab studies. No study in people has reported results yet. Data as of 2026-10-30.

Also known as IGF-1Ec, MGF, MGF-C25E, MGF-Ct24E, MGF-E, Q86M4KXC2P and 14 more

24 amino acids, from first to last4 changed amino acids

Evidence level: Animal and lab studies onlyNo study in people has results. ClinicalTrials.gov lists no trial.

Results in people

0% of 330 results

Results in animals

21% of 330 results

Results in lab cells

260

79% of 330 results

From computer models

0% of 330 results

Overview

MGF / PEG-MGF at a glance

What it is	Synthetic fragment, 24 amino acids
Approval	Not approved for any use
In sport	Banned in sport (WADA S2.3)
Studies	222 studies with results. 72 of them gave MGF / PEG-MGF, with 330 results. 70 in animals260 in lab cells
Clinical trials	None registered
Community use	Muscle growth and recovery after resistance training; Stacked with IGF-1 LR3, IGF-1 DES or growth hormone; Muscle and tendon complaints during injury recovery

The science

What is MGF / PEG-MGF?

MGF (mechano growth factor) is the name of a splice form of IGF-1, and sellers use it for a 24-residue peptide copied from the end of that form; PEG-MGF is the same peptide with a polyethylene glycol chain. Neither is an approved medicine, and no registered trial tests either in humans.

Amino acids in one chain

MGF / PEG-MGF structure and chemistry

The key facts about the molecule. Long codes are in the closed section below.

Sequence, 24 amino acidsFrom the first amino acid to the last

Y1QPPS5TN+KNT10+KSQ+R+R15+KGSTF20−E−E+R+K

Darker means more water-repelling+ and − show charge in the bodyOutlined: changed amino acid

Structure

MGF / PEG-MGF is a synthetic fragment of 24 amino acids, with no ring, 4 changed amino acids.

Formula

C₁₂₁H₁₉₉N₄₁O₄₀

Molecular weight

2,868.2 g/mol

Targets

Insulin-like growth factor 1 receptor (gene IGF1R): disputed: ERK1/2 activation by the E peptide depended on the IGF-1 receptor in rat bone marrow stem cells (blocked by an IGF1R inhibitor); other work found IGF-1 receptor-independent effects of the peptideEvidence: primary literatureUnidentified receptor or pathway for the E domain: proposed: the E domain acts through a receptor other than the IGF-1 receptor (blocking the IGF-1 receptor did not stop the effect of MGF in myoblasts and in brain ischemia). Not identified; not reproduced in all labs (PMID 24253050).Evidence: proposed

Development

No company holds an approval or a registered human programme. The splice form was described by Geoffrey Goldspink's group at University College London (Yang et al. 1996, J Muscle Res Cell Motil, PMID 8884603). The peptide and PEG-MGF are sold as research chemicals. Highest phase: preclinical.

Identifiers

PubChem 175675731, UNII Q86M4KXC2P, UniProt P05019

Full sequence, SMILES and InChIKey

Three-letter sequence
H-Tyr-Gln-Pro-Pro-Ser-Thr-Asn-Lys-Asn-Thr-Lys-Ser-Gln-Arg-Arg-Lys-Gly-Ser-Thr-Phe-Glu-Glu-Arg-Lys-OH

InChIKey
TXMSCWQMYNJNDC-XGJLPCLZSA-N

SMILES
C[C@H]([C@@H](C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CO)C(=O)N[C@@H](CCC(=O)N)C(=O)N[C@@H](CCCNC(=N)N)C(=O)N[C@@H](CCCNC(=N)N)C(=O)N[C@@H](CCCCN)C(=O)NCC(=O)N[C@@H](CO)C(=O)N[C@@H]([C@@H](C)O)C(=O)N[C@@H](CC1=CC=CC=C1)C(=O)N[C@@H](CCC(=O)O)C(=O)N[C@@H](CCC(=O)O)C(=O)N[C@@H](CCCNC(=N)N)C(=O)N[C@@H](CCCCN)C(=O)O)NC(=O)[C@H](CC(=O)N)NC(=O)[C@H](CCCCN)NC(=O)[C@H](CC(=O)N)NC(=O)[C@H]([C@@H](C)O)NC(=O)[C@H](CO)NC(=O)[C@@H]2CCCN2C(=O)[C@@H]3CCCN3C(=O)[C@H](CCC(=O)N)NC(=O)[C@H](CC4=CC=C(C=C4)O)N)O

See charge, composition and 3D structure on the Scientific page

The evidence

What MGF / PEG-MGF studies show

Results grouped by what the studies measured. Each card shows where its results come from.

Animal and lab studies onlyNo study in people has results. ClinicalTrials.gov lists no trial.

Muscles and tendons

69 results · 18 animal · 51 lab

In rabbits with a torn ACL, MGF E peptide lowered HIF-1α, a protein that responds to low oxygen. Journal of cellular physiology, 2019

Top results

In rabbits with a torn ACL, MGF E peptide lowered HIF-1α, a protein that responds to low oxygen. (Journal of cellular physiology, 2019)
In mice, the lab-made MGF peptide helped transplanted human muscle precursor cells to engraft. (American journal of transplantation, 2007)
In lab tests, a part of the MGF peptide made human stem cells move more. (Journal of molecular and cellular cardiology, 2010)

Bones and joints

90 results · 15 animal · 75 lab

In lab and animal tests, MGF with TGF-β3 drew in more cells than TGF-β3 alone. Biomaterials, 2015

Top results

In lab and animal tests, MGF with TGF-β3 drew in more cells than TGF-β3 alone. (Biomaterials, 2015)
In rabbits, the high dose of the MGF E peptide led to more healed bone defects than no treatment. (International orthopaedics, 2011)
In rabbits with bone defects, MGF24E treatment raised the animals' own BMP2. (Cell and tissue research, 2015)

Memory and thinking

12 results · 12 animal

In rats under simulated weightlessness, the MGF E domain peptide blocked a rise in brain Igf-iea gene activity. Biotechnology letters, 2016

Top results

In rats under simulated weightlessness, the MGF E domain peptide blocked a rise in brain Igf-iea gene activity. (Biotechnology letters, 2016)
In rats under simulated weightlessness, the MGF E domain peptide blocked a rise in brain Igf-iea gene activity. (Biotechnology letters, 2016)
In rats under simulated weightlessness, the MGF E domain peptide blocked a rise in brain mgf gene activity. (Biotechnology letters, 2016)

Heart and blood vessels

17 results · 11 animal · 6 lab

In mice after a heart attack, the MGF E-domain peptide in microrods eased the decline in heart blood-flow measures. Biomaterials, 2015

Top results

In mice after a heart attack, the MGF E-domain peptide in microrods eased the decline in heart blood-flow measures. (Biomaterials, 2015)
In cells, MGF24E promoted blood vessel formation processes more than the vehicle alone. (Acta biochimica et biophysica Sinica, 2012)
In mice after a heart attack, early MGF E-domain peptide lessened the drop in heart performance compared with no treatment. (International journal of cardiovascular research, 2014)

Immune system and inflammation

13 results · 8 animal · 5 lab

In mice with muscle injury and no macrophages, MGF injection lowered the activity of four inflammation genes in muscle. Frontiers in physiology, 2019

Top results

In mice with muscle injury and no macrophages, MGF injection lowered the activity of four inflammation genes in muscle. (Frontiers in physiology, 2019)
In rat immune cells in a lab dish, MGF peptide weakened the cells' ability to engulf particles. (European journal of applied physiology, 2013)
In lab-grown gum ligament cells, adding MGF raised MMP-1 and MMP-2 more than stretch alone. (Shanghai kou qiang yi xue = Shanghai journal of stomatology, 2019)

Brain and nerves

13 results · 5 animal · 8 lab

In rats with brain injury, those given MGF-Ct24E started eating and drinking within 14 days. No comparison group is stated. Journal of tissue engineering and regenerative medicine, 2018

Top results

In rats with brain injury, those given MGF-Ct24E started eating and drinking within 14 days. No comparison group is stated. (Journal of tissue engineering and regenerative medicine, 2018)
In rats with brain injury, MGF-Ct24E reduced bleeding in the brain. (Journal of tissue engineering and regenerative medicine, 2018)
In rats with brain injury, MGF-Ct24E raised the level of Netrin-1 in the brain. (Journal of tissue engineering and regenerative medicine, 2018)

All 222 MGF / PEG-MGF studies by area Open the Scientific page

Key MGF / PEG-MGF studies

Studies in people come first, then studies in animals and in the lab.

Animals
Mechano growth factor (MGF) and transforming growth factor (TGF)-β3 functionalized silk scaffolds enhance articular hyaline cartilage regeneration in rabbit model
Luo et al. 2015 · Biomaterials · cited by 102
6 results
Animals
Mechano growth factor E peptide promotes osteoblasts proliferation and bone-defect healing in rabbits
Deng et al. 2011 · International orthopaedics · cited by 36
5 results
Animals
A synthetic mechano growth factor E Peptide enhances myogenic precursor cell transplantation success
Mills et al. 2007 · American journal of transplantation : official journal of the American Society of Transplantation and the American Society of Transplant Surgeons · cited by 32
5 results
Animals
Localized delivery of mechano-growth factor E-domain peptide via polymeric microstructures improves cardiac function following myocardial infarction
Peña et al. 2015 · Biomaterials · cited by 22
5 results
Animals
Impaired Skeletal Muscle Regeneration Induced by Macrophage Depletion Could Be Partly Ameliorated by MGF Injection
Liu et al. 2019 · Frontiers in physiology · cited by 17
6 results

All 222 MGF / PEG-MGF studies

MGF / PEG-MGF clinical trials

ClinicalTrials.gov lists no trial of MGF / PEG-MGF. A trial under another name may exist.

Status and safety

Is MGF / PEG-MGF approved?

FDA

United States

Not approved

No approved medicine contains it.

EMA

European Union

Not approved

No approved medicine contains it.

WADA

Sport

Banned

On the 2026 Prohibited List, section S2.3.

No. Not approved for any use. Preclinical research only. No clinical trial phase found. The FDA, the EMA and the other sources we use show no approval (as of 13 Oct 2026). Banned in sport (WADA S2.3).

Laws and labels change, so check the regulator for the current status.

MGF / PEG-MGF side effects and safety

PepBank has 1 safety result from studies of MGF / PEG-MGF. None of them come from studies in people, so they do not show what happens in people.

Safety results from studies (1)

In cells, the MGF-E peptide did not clearly harm joint lining cells. (International orthopaedics, 2015)

See every safety result on the Scientific page

Doses studied (17 shown)

The doses that these studies used. They are not recommendations.

Dose as reported	Class	Species	Route	Duration	Design	Source
57 μg /kg body weight	Animal	rabbit	Not reported	five consecutive days	Study in live animals	Deng 2011
0.1-10-μg/ml	Animal	rabbit	Not reported	2 weeks	Study in live animals	Song 2018
1000 ng/ml	Animal	rat	Not reported	Not reported	Study in live animals	Zhang 2016
up to 500 ng/ml	Lab	Not reported	Not reported	Not reported	Study on cells in a dish	Fornaro 2014
1, 10, 50, 100 ng/ml	Lab	rat	Not reported	Not reported	Study on cells in a dish	Xiao 2013
50 ng/mL	Lab	rat	Not reported	Not reported	Study on cells in a dish	Wu 2013
1 nM	Lab	Not reported	Not reported	Not reported	Study on cells in a dish	Xin 2012
10, 100 ng/mL	Lab	human	Not reported	Not reported	Study on cells in a dish	Sha 2022
sub-25 nM MGF24E with 5 nM BMP2	Lab	Not reported	Not reported	Not reported	Study on cells in a dish	Deng 2015
10 ng/ml	Lab	human	Not reported	Not reported	Study on cells in a dish	Deng 2012
5-50nM	Lab	human	Not reported	Not reported	Study on cells in a dish	Papageorgiou 2016
10-60-ng/ml	Lab	human	Not reported	12 hr	Study on cells in a dish	Song 2018
0.01, 0.1 and 1 mg/ml FITC-MGF	Lab	Not reported	Not reported	Not reported	Study on cells in a dish	Peng 2012
1 mg/ml FITC-MGF	Lab	Not reported	Not reported	Not reported	Study on cells in a dish	Peng 2012
0.5 and 1.0 μg/ml	Lab	rat	Not reported	Not reported	Study on cells in a dish	Liu 2018
10, 20 and 30 ng/ml	Lab	Not reported	Not reported	24 h	Study on cells in a dish	He 2018
10, 20 and 30 ng/ml	Lab	Not reported	Not reported	24 h	Study on cells in a dish	He 2018

From the community

How people use it

What people report online. It comes from forums and guides, not from studies.

Community-reported. Not tested in trials.

Sources report that people inject MGF or PEG-MGF after strength training to speed recovery and add muscle, often with IGF-1 LR3 or growth hormone. Reported amounts are 200 to 400 mcg per injection, 2 to 3 times per week for PEG-MGF and right after training for MGF. No human trial exists, and several users report no effect.

Reported routines and cautions

What people use it for

Muscle growth and recovery after resistance trainingS1S2S4S7S8
Stacked with IGF-1 LR3, IGF-1 DES or growth hormoneS1S2S4S7
Muscle and tendon complaints during injury recoveryS1S10

Reported regimens

Regimens that community sources report for MGF / PEG-MGF. Community-reported, not tested in trials.
Context	Route	Amount	How often	How long	Agreement	Sources
PEG-MGF, muscle recovery and growth around training	subcutaneous or intramuscular injectionS1 lists a subcutaneous plan (in the abdomen) and an intramuscular plan into trained muscle. S4 splits the dose between the left and right trained muscle ('bilaterally').	200 to 400 mcg per dose	2 to 3 times per week, after training	about 4 to 10 weeks	sources roughly agree: 200 to 400 mcg, 2 to 3 times per week. S1 and S3 are one wiki that carries seller rankings, S11 copies a seller blog, so only S4 and S7 are independent forum posts (S4 from 2012, S7 from 2013 and 2014). Higher amounts are in R3.	S1S3S4S7S11
MGF (unmodified peptide), right after training	intramuscular injection into the muscle just trainedS2 and S8 describe injecting both sides of the trained muscle ('bilaterally'), in small shots in S8.	200 to 400 mcg per dose	after each training session (S2, S7); one user reports twice a week (S8)	about 4 to 6 weeks	3 sources agree on about 200 mcg and injection into the trained muscle (S2 wiki, S7 forum, S8 forum). S2 alone gives up to 400 mcg. S2 carries seller rankings.	S2S4S7S8
PEG-MGF, higher-amount reports	injection; into the trained muscle in S9, route not stated in S5 and S6	500 to 4000 mcg per injection (S5, S6); per training session in S9	3 times per week, or up to 5 times per week (S5); about 3 times per week (S9)	Not stated	sources differ from R1: they report 500 mcg and more per injection. Each is a single forum user, and S5 and S6 are 2008 posts on a board with seller sponsors.	S5S6S9
MGF on training days, alternating with IGF-1 LR3 on rest days	intramuscular injection	200 to 400 mcg per dose	on days that alternate with IGF-1 LR3	10 to 20 day cycles	single source. The page carries seller rankings.	S2

Reported side effects

injection-site reactionsS3
full-body flush and a faint feeling right after injection (one user, 500 to 600 mcg of PEG-MGF; two other users on the thread also reported flushing, and some thought the vial held a different product)S6
bruising at injection sites (one user who gave many small injections per muscle)S9
a small drop in blood sugar above 1 mg per day (one user, MGF)S9

Reported benefits (claims, not shown in trials)

faster recovery between training sessionsS1
less muscle soreness (DOMS) when injected after trainingS2
modest muscle gains over 6 to 10 weeks, mostly in stacks with other growth factorsS1
relief of inflammation and tendon complaints over time (one user recovering from hip replacement)S10

Cautions

No human trial of MGF or PEG-MGF exists. A 2026 review puts PEG-MGF in its lowest evidence tier: 'No peer-reviewed human studies.'S11
The same review says forum reports of 'local-only action' and no systemic side effects are anecdotal.S11
Several forum users report that they saw no effect from PEG-MGF or MGF. Examples: 'have not noticed any extra pump, nor growth' (S4), 'didn't notice much of anything' (S7), 'the lack of reviews/logs is directly tied to the lack of results' (S8), 'The stuff doesn't work' (S9).S4S7S8S9
The contents of a vial may differ from the human peptide. Two black market MGF products were C-terminal amidated analogues, and one confiscated vial was MGF R23H (histidine instead of arginine at position 23).S15 S16
One wiki says product quality is a significant concern, because PEGylation adds manufacturing complexity.S1
FDA says compounded PEG-MGF may pose significant risk for immunogenicity and that it has found no human exposure data for it.S12
A wiki advises against use with known or suspected cancer because of 'cell proliferative effects'. The 2026 review lists a theoretical proliferative concern from IGF-1Ec expression in cancer biology.S3S11

Status notes

MGF and PEG-MGF are not approved medicines in the US or EU. There is no label dose, so no regimen here has a label basis.S12 S13
FDA: MGF is in category 3 (nominated without adequate support) of the 503A bulk substances list, updated 2026-05-14. PEG-MGF is on FDA's safety-risk page under substances nominated and later withdrawn, with a warning about immunogenicity. Neither is cleared for compounding.S12 S13
WADA: 'Mechano growth factors (MGFs)' are named in S2.3 of the 2026 Prohibited List and the 2027 List (in force 2027-01-01). They are prohibited at all times.S14

Community sources

S1PEG-MGF: Community Protocols & Reports (Peptide Protocol Wiki)peptideprotocolwiki.comcarries seller links, not linked
S2MGF: Community Protocols & Reports (Peptide Protocol Wiki)peptideprotocolwiki.comcarries seller links, not linked
S3PEG-MGF: Long-Acting Growth Factor Peptide Guide (Peptide Protocol Wiki)peptideprotocolwiki.comcarries seller links, not linked
S4My IGF-1 Des and PegMGF protocol (forum thread, 2012-10-13)anabolicminds.comcarries seller links, not linked
S5Best way to run 2mg PEG-MGF? (forum thread, 2008-03-09)anabolicminds.comcarries seller links, not linked
S6PEG-MGF immediately after injection, weird effects (forum thread, 2008-06-11)anabolicminds.comcarries seller links, not linked
S7IGF-1 LR3 or peg MGF (EliteFitness forum thread, 2013-01-01)elitefitness.comcarries seller links, not linked
S8peg mgf (EliteFitness forum thread, 2015-03-12)elitefitness.comcarries seller links, not linked
S9MGF Peptide Guide (Mechano Growth Factor): Benefits + Uses (forum thread, 2023-12-17)anabolicsteroidforums.comcarries seller links, not linked
S10MOTS-C, PEG-MGF and IGF-LR3 dosing (forum thread, 2025-10-05)anabolicsteroidforums.comcarries seller links, not linked
S11The emerging landscape of performance-enhancing peptides modulating GH-IGF1 axis (Frontiers in Endocrinology, 2026 review) (opens in a new tab)frontiersin.org
S12Certain Bulk Drug Substances for Use in Compounding that May Present Significant Safety Risks (FDA) (opens in a new tab)fda.gov
S13Bulk Drug Substances Nominated for Use in Compounding Under Section 503A (FDA categories, updated 2026-05-14) (opens in a new tab)fda.gov
S14WADA Prohibited List 2026 (S2.3) (opens in a new tab)wada-ama.org
S15Esposito et al. 2012: C-terminal amidated MGF analogue in black market products (opens in a new tab)pubmed.ncbi.nlm.nih.gov
S16Cox et al. 2017: BPC 157 and MGF R23H in confiscated vials (opens in a new tab)pubmed.ncbi.nlm.nih.gov

Gaps

No label dose exists, because the substance is not approved. The MESO-Rx / ThinkSteroids PEG-MGF threads and profile could not be fetched by script (the site returns an Incapsula block), so they could not be quote-checked and are not used, although the 2025 thread shows 300 to 400 mcg once a day with a plan of 300 to 500 mcg over 6 to 8 weeks. Reddit is not used. The community posts found are mostly 2008 to 2015 forum posts, and several boards carry seller sponsors (marked affiliate). No harm-reduction site, clinic page or news story about MGF use was found. No community source states the PEG size. Only S2 gives a structured plan for unmodified MGF; the other MGF amounts are short forum remarks. The wiki pages say they draw on Reddit and seller blogs, so S1, S2 and S3 may not be independent of the other sources. Whether the peptide used in these posts was the native human sequence, the R23H variant or an amide is not stated.

Questions and more

Ask a question about MGF / PEG-MGF

The answer links to every study it uses.

What does the evidence say about MGF / PEG-MGF?Is MGF / PEG-MGF tested in people?Compare with Thymosin beta-4 (human)Compare with BPC-157

Sources

Database: PepBank data for MGF / PEG-MGF (data version 308560)
Regulator: FDA status record
Regulator: EMA status record
Regulator: WADA status record
Community: community sources (forums and guides), as summarized in the PepBank community file

AI wrote and checked these results. AI can make mistakes, so check important results against the source.

PepBank is a research reference. Talk to a doctor before you use any peptide.

Ask your AI about MGF / PEG-MGF

Curo is a peptide shop. PepBank and Curo have the same owner. See the Curo catalog (opens in a new tab).

MGF / PEG-MGF

Not approvedBanned in sport

Also known as IGF-1Ec, MGF, MGF-C25E, MGF-Ct24E, MGF-E, Q86M4KXC2P and 14 more

What it is

Synthetic fragment, 24 amino acids

Approval

Not approved for any use

In sport

Banned in sport (WADA S2.3)

Studies

222 studies with results. 72 of them gave MGF / PEG-MGF, with 330 results.
70 in animals260 in lab cells

Clinical trials

None registered

Community use

Muscle growth and recovery after resistance training; Stacked with IGF-1 LR3, IGF-1 DES or growth hormone; Muscle and tendon complaints during injury recovery

Dose as reported

Class

Species

Route

Duration

Design

Source

57 μg /kg body weight

Animal

rabbit

Not reported

five consecutive days

Study in live animals

Deng 2011

0.1-10-μg/ml

Animal

rabbit

Not reported

2 weeks

Study in live animals

Song 2018

1000 ng/ml

Animal

rat

Not reported

Study in live animals

Zhang 2016

up to 500 ng/ml

Lab

Not reported

Study on cells in a dish

Fornaro 2014

1, 10, 50, 100 ng/ml

Lab

rat

Not reported

Study on cells in a dish

Xiao 2013

50 ng/mL

Lab

rat

Not reported

Study on cells in a dish

Wu 2013

1 nM

Lab

Not reported

Study on cells in a dish

Xin 2012

10, 100 ng/mL

Lab

human

Not reported

Study on cells in a dish

Sha 2022

sub-25 nM MGF24E with 5 nM BMP2

Lab

Not reported

Study on cells in a dish

Deng 2015

10 ng/ml

Lab

human

Not reported

Study on cells in a dish

Deng 2012

5-50nM

Lab

human

Not reported

Study on cells in a dish

Papageorgiou 2016

10-60-ng/ml

Lab

human

Not reported

12 hr

Study on cells in a dish

Song 2018

0.01, 0.1 and 1 mg/ml FITC-MGF

Lab

Not reported

Study on cells in a dish

Peng 2012

1 mg/ml FITC-MGF

Lab

Not reported

Study on cells in a dish

Peng 2012

0.5 and 1.0 μg/ml

Lab

rat

Not reported

Study on cells in a dish

Liu 2018

10, 20 and 30 ng/ml

Lab

Not reported

24 h

Study on cells in a dish

He 2018

10, 20 and 30 ng/ml

Lab

Not reported

24 h

Study on cells in a dish

He 2018

Context

Route

Amount

How often

How long

Agreement

Sources

PEG-MGF, muscle recovery and growth around training

subcutaneous or intramuscular injectionS1 lists a subcutaneous plan (in the abdomen) and an intramuscular plan into trained muscle. S4 splits the dose between the left and right trained muscle ('bilaterally').

200 to 400 mcg per dose

2 to 3 times per week, after training

about 4 to 10 weeks

sources roughly agree: 200 to 400 mcg, 2 to 3 times per week. S1 and S3 are one wiki that carries seller rankings, S11 copies a seller blog, so only S4 and S7 are independent forum posts (S4 from 2012, S7 from 2013 and 2014). Higher amounts are in R3.

S1S3S4S7S11

MGF (unmodified peptide), right after training

intramuscular injection into the muscle just trainedS2 and S8 describe injecting both sides of the trained muscle ('bilaterally'), in small shots in S8.

200 to 400 mcg per dose

after each training session (S2, S7); one user reports twice a week (S8)

about 4 to 6 weeks

3 sources agree on about 200 mcg and injection into the trained muscle (S2 wiki, S7 forum, S8 forum). S2 alone gives up to 400 mcg. S2 carries seller rankings.

S2S4S7S8

PEG-MGF, higher-amount reports

injection; into the trained muscle in S9, route not stated in S5 and S6

500 to 4000 mcg per injection (S5, S6); per training session in S9

3 times per week, or up to 5 times per week (S5); about 3 times per week (S9)

Not stated

sources differ from R1: they report 500 mcg and more per injection. Each is a single forum user, and S5 and S6 are 2008 posts on a board with seller sponsors.

S5S6S9

MGF on training days, alternating with IGF-1 LR3 on rest days

intramuscular injection

200 to 400 mcg per dose

on days that alternate with IGF-1 LR3

10 to 20 day cycles

single source. The page carries seller rankings.

MGF / PEG-MGF

MGF / PEG-MGF at a glance

What is MGF / PEG-MGF?

MGF / PEG-MGF structure and chemistry

What MGF / PEG-MGF studies show

Muscles and tendons

Bones and joints

Memory and thinking

Heart and blood vessels

Immune system and inflammation

Brain and nerves

Key MGF / PEG-MGF studies

MGF / PEG-MGF clinical trials

Is MGF / PEG-MGF approved?

MGF / PEG-MGF side effects and safety

How people use it

What people use it for

Reported regimens

Reported side effects

Reported benefits (claims, not shown in trials)

Cautions

Status notes

Community sources

Ask a question about MGF / PEG-MGF

Related peptides

Sources

MGF / PEG-MGF

MGF / PEG-MGF at a glance

What is MGF / PEG-MGF?

MGF / PEG-MGF structure and chemistry

What MGF / PEG-MGF studies show

Muscles and tendons

Bones and joints

Memory and thinking

Heart and blood vessels

Immune system and inflammation

Brain and nerves

Key MGF / PEG-MGF studies

MGF / PEG-MGF clinical trials

Is MGF / PEG-MGF approved?

MGF / PEG-MGF side effects and safety

How people use it

What people use it for

Reported regimens

Reported side effects

Reported benefits (claims, not shown in trials)

Cautions

Status notes

Community sources

Ask a question about MGF / PEG-MGF

Related peptides

Sources