191 In the index

IGF-1 LR3 IGF-1 LR3

A longer-lasting modified version of a natural growth factor, popular in bodybuilding research-chemical circles. It hasn't been tested in proper human trials; user reports describe strong muscle-building effects alongside a real risk of dangerously low blood sugar.

Also known as Long R3 IGF-1

Effects Build muscle Heal

Routes Subcutaneous

Legal status Research chemical

WADA Banned at all times

Reported dosing

User-reported

What has been reported in the literature and by users. This is a record of what is done, not a recommendation.

Typical dose 20-50 mcg/day

Reported range 20-100 mcg/day

Route Subcutaneous injection

Frequency Once daily

Duration 4-6 week course (unregulated use)

A long-acting IGF-1 analog; not FDA-approved for bodybuilding use. Carries a recognized risk of severe, prolonged hypoglycemia and organ-growth concerns with unsupervised use.

Where this comes from User-reported/research-chemical vendor literature

There is no approved human dosing for this compound. The figures above are what users and vendors report, not what has been established as safe or effective. Treat them as a record of what is done, not as guidance.

Variants

Name	Abbr	Route	Notes
IGF-1 LR3	LR3	Subcutaneous	The long-acting R3 variant most commonly sold.