All I gotta say is this stuff is amazing. (2 10iu's shots)My weight in 3 days is up 7lbs. I have done alot of eatin also :-) I took Humalin-R before but I still cant believe how hard Humalog hits in that 15-25mins range. You really have to be prepard. Humalog is NOT for newbies!! But anywayz I just wanta give thumbs up on Humalog!