Imaging you have to choose a form of bendamustine for your treatment. Option a. Treanda Lyo. Chair time 30(or 60 mins) resulting in less comfort. Zero risk for PEG (i.e. antifreeze) anaphylactic shock since Treanda Lyo has no PEG or PG.
Option b. Bendeka. Chair time 10 minutes avoiding 20 (or 50) minutes of discomfort. Some (low but still existing) risk for PEG/PG induced anaphylactic shock.