I was not a fan. The plot was interesting enough but even at 97 minutes the movie felt really long. Davidson was ok but I'm not sure he was the right actor for the role. If you enjoy violence, the film goes on a binge at the end.
[Show spoiler]The plot is about "the fountain of youth" but nearly all the characters look like they're in their 70's which worked against the concept. One of them claimed to be 128 but he looked 80 so while he was kept from dying, he wasn't youthful.
5/10.