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IGF-1 LR3 vs Follistatin 344
Side by side, in plain English — what each one is, where they overlap and where they genuinely differ.
IGF-1 LR3Muscle / Growth
Follistatin 344Muscle / GrowthAt a glance
| IGF-1 LR3 | Follistatin 344 | |
|---|---|---|
| Category | Muscle / Growth | Muscle / Growth |
| Typical route | SubQ | SubQ (or IM at site) |
| Shelf life once mixed | ~30 days | ~30 days |
| Commonly reported effects | Muscle hyperplasia Recovery Fat metabolism | Muscle growth Reduced myostatin Fat loss |
| Reported considerations | Hypoglycemia risk Organ growth if abused | Joint pain Possible organ growth if abused |
The differences that actually matter
Both are classed as Muscle / Growth peptides, so they get compared constantly and are often researched for overlapping reasons.
Route of administration differs — IGF-1 LR3 is typically subq, Follistatin 344 is typically subq (or im at site). That alone changes how convenient each one is to keep up with.
Where they overlap: muscle hyperplasia.
Reported mainly for IGF-1 LR3: recovery, fat metabolism.
Reported mainly for Follistatin 344: reduced myostatin, fat loss.
What IGF-1 LR3 is
IGF-1 LR3, or Long R3 Insulin-like Growth Factor-1, is a modified analog of native human IGF-1 designed for an extended half-life and enhanced bioavailability. It primarily exerts its effects by binding to the IGF-1 receptor, a transmembrane tyrosine kinase receptor, which then initiates intracellular signaling cascades, notably the PI3K/Akt and MAPK pathways, critical for cell growth, proliferation, and differentiation. The "LR3" modification involves an arginine substitution at position 3 and a 13 amino acid N-te
What Follistatin 344 is
Follistatin 344 is a naturally occurring glycoprotein, with this specific isoform being a potent antagonist of myostatin. Myostatin is a growth differentiation factor belonging to the TGF-beta superfamily, primarily known for inhibiting muscle growth. Follistatin 344 binds directly to myostatin, thereby preventing myostatin from interacting with its receptors on muscle cells and signaling pathways that limit muscle development. This inhibition consequently reduces myostatin's negative regulatory effect, allowing fo
How to compare them for yourself
Anecdotes online are noisy because nobody is measuring the same thing. The only comparison that means anything is your own: log each entry with a timestamp, keep the vial ledger honest so you know what you actually got through, pick two or three metrics before you start, and look at the trend after several weeks rather than day to day.
Peptide Wizard does that part for you — IGF-1 LR3 and Follistatin 344 are both in the built-in reference library with a 3D vial, and your history, vial ledger and cost per entry stay private on your device.
FAQ
What is the difference between IGF-1 LR3 and Follistatin 344?
Both are classed as Muscle / Growth peptides, so they get compared constantly and are often researched for overlapping reasons.
Can you log IGF-1 LR3 and Follistatin 344 in the same period?
Plenty of people record more than one peptide at a time. Peptide Wizard keeps a separate vial ledger and entry history for each, so you can see exactly what overlapped and when — it does not recommend combinations or doses.
Which is better, IGF-1 LR3 or Follistatin 344?
There isn't a universal answer — reported responses vary a lot between individuals, which is why your own log is more informative than anyone else's anecdote. Track one variable at a time and compare your own metrics over several weeks.
Is this medical advice?
No. This page is educational reference material only. It contains no dosing guidance. Speak to a qualified healthcare professional before making any decisions.
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Educational reference only. This page contains no dosing guidance and is not medical advice.