Follistatin 344 (2mg/2ml Pen Cartridge)

Follistatin 344 (FS344) is a variant of the follistatin protein, which is known for its role in inhibiting myostatin, a protein that negatively regulates muscle growth. This makes FS344 of particular interest in contexts such as muscle development and potential therapeutic applications for muscle-wasting conditions.

Note: This product is a reconstituted pen cartridge only containing 2mg of Follistatin 344 in 2ml of solution.  No pen or other delivery mechanism is provided with this cartridge.  Because the reconstituted cartridge is shipped refrigerated. we offer FedEx Overnight domestic US shipping only.