RT Journal Article SR Electronic T1 Novo human insulin - the same but different JF Drug and Therapeutics Bulletin JO Drug Ther Bull FD BMJ Publishing Group Ltd SP 24 OP 24 DO 10.1136/dtb.28.6.24 VO 28 IS 6 YR 1990 UL http://dtb.bmj.com/content/28/6/24.abstract AB Unannounced to prescribers or patients, Novo Nordisk have changed the manufacturing process of their human insulins from enzymatic modification of pig insulin (emp) to direct biosynthesis of genetically engineered yeast cells (pyr). The preservative for Human Actrapid insulin has also been changed from phenol to meta-cresol. No warning of this change was sent to pharmacists, doctors, diabetes specialists or patients.