Sanofi-aventis' SoloSTAR(R) Insulin Pen for Lantus and Apidra ... - PR Newswire UK (press release)
... found that SoloSTAR(R) required 31% less injection force than the Novo Nordisk FlexPen(R) and 54% less force than the Eli Lilly Humulin/Humalog pen. ...