Each flexpen of suspension for injection contains 30% soluble insulin aspart and 70% protamine crystallised insulin aspart.
It also contains the following excipients: Glycerol, phenol, metacresol, zinc (as chloride), sodium chloride, disodium phosphate dihydrate, protamine sulfate, sodium hydroxide and hydrochloric acid (for pH adjustment), and water for injections.
Insulin aspart is produced by recombinant DNA technology in Saccharomyces cerevisiae.
One unit of insulin aspart corresponds to 6 nmol, salt-free anhydrous insulin aspart 0.035 mg.
One pre-filled pen contains 3 mL equivalent to 300 U.