RT Journal Article SR Electronic T1 Three new insulin preparations JF Drug and Therapeutics Bulletin JO Drug Ther Bull FD BMJ Publishing Group Ltd SP 45 OP 46 DO 10.1136/dtb.4.12.45 VO 4 IS 12 YR 1966 UL http://dtb.bmj.com/content/4/12/45.abstract AB Novo Actrapid (Neutral insulin injection-DFE), Nuso (neutral soluble insulin-British Insulin Manufacturers) and Novo Rapitard (Biphasic insulin injection-DFE) have recently become available for clinical use after protracted experiments on the solubility of highly purified insulins at various pH levels.1 2