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TB-500 vs IGF-1 LR3
TB-500 sits in healing & recovery, while IGF-1 LR3 sits in muscle / growth — so despite being mentioned together they are used for different things. The table below sets out the differences. We give no dosing guidance.
Side by side, in plain English — what each one is, where they overlap and where they genuinely differ.
TB-500Healing & Recovery
IGF-1 LR3Muscle / GrowthAt a glance
| TB-500 | IGF-1 LR3 | |
|---|---|---|
| Category | Healing & Recovery | Muscle / Growth |
| Typical route | SubQ | SubQ |
| Shelf life once mixed | ~30 days | ~30 days |
| Commonly reported effects | Full-body healing Improved flexibility Wound repair Reduced scar tissue | Muscle hyperplasia Recovery Fat metabolism |
| Reported considerations | Head rush Temporary lethargy | Hypoglycemia risk Organ growth if abused |
The differences that actually matter
They aren't really substitutes: TB-500 sits in Healing & Recovery while IGF-1 LR3 sits in Muscle / Growth. People usually pick between them because of a shared secondary effect rather than because they do the same job.
Reported mainly for TB-500: full-body healing, improved flexibility, wound repair.
Reported mainly for IGF-1 LR3: muscle hyperplasia, recovery, fat metabolism.
What TB-500 is
TB-500 is a synthetic variant of the naturally occurring peptide Thymosin Beta-4 (TB4), a vital component found in virtually all human and animal cells. Its primary mechanism of action centers on its ability to regulate actin, a crucial protein involved in cellular structure, movement, and repair. By interacting with actin, TB-500 promotes cell migration, differentiation, and the formation of new blood vessels, a process known as angiogenesis, which is essential for wound healing. These biochemical activities contr
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
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 — TB-500 and IGF-1 LR3 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 TB-500 and IGF-1 LR3?
They aren't really substitutes: TB-500 sits in Healing & Recovery while IGF-1 LR3 sits in Muscle / Growth. People usually pick between them because of a shared secondary effect rather than because they do the same job.
Can you log TB-500 and IGF-1 LR3 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, TB-500 or IGF-1 LR3?
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.