http://www.jintropin.com/Faq.aspx
The info about the 98 degree temp is on most the sites that sell jins, however, the above site says 86 and ok at 110 for a day or two. Also says it is shipped from the manufactory with ice but not sure if that is the case or not. Not sure where they get their info though. As I can't find where I read that about the useful life being shortened and if was referring to the 191 or 192 strand. Not much is said about what happens if it is exposed to temps higher than 98. However, given the fact that if keep in the fridge it is good a year and at room temp only 30days above that 98 degree mark can't be too long I would suspect. I don't understand why ice packs, which cost maybe 3-5 dollars, are not packed with these hgh kits especially since some of these folks are spending over a thousand or two on several kits. Why take the chance IMO?
Perp