Boldinox 250 is an oily solution of boldenone undecylenate for IM injection. Boldenone serum levels will remain elevated for 5 to 9 days after administration. Boldenone is an anabolic steroid possessing anabolic properties with moderate androgenic activity. Boldinox 250 is used where accelerated strength, muscular development, endurance and increased red blood cell production are indicated.