FLGR-242
Also known as: modified follistatin (seller-described), FLGR242
Status
No approved product. No approved product found. No study under this exact product name was found in the PubMed and ClinicalTrials.gov searches checked on 11 November 2026. The description on this page comes from one seller's product page, which has not been independently verified.
What it is
A seller describes it as a modified follistatin joined to an albumin binder. Its identity, activity and persistence in the body are unverified; the seller page also contradicts itself about whether it binds activin.
What published research measured
Follistatin biology (binding of myostatin and activin, which signal through ActRII receptors and SMAD2/3) is real and studied, but that literature is about other molecules. The searches found no study establishing selective myostatin inhibition or a 19-day human half-life for this product. A mouse follistatin construct (PubMed 17893249) is a different molecule.
Source
Seller product page only (biolongevitylabs.com) · bounded PubMed and ClinicalTrials.gov exact-name searches, zero records Primary source
Sources
Educational use only, never medical advice. No doses.