I received a bottle of caber a few months ago. Can't remember the exact date but it was a few months. I opened it straightaway and have used it on/off since. I recently started tren so have been using it eod. I can safely state our caber is still effective after this time. It feels like a weak version of prami to me... not necessarily a bad thing.
When I first dosed it a few months back I started very low. I figured I would build it up with low ed doses for the first week then go to twice weekly dosing. Anyway I dosed it too high the 2nd night and felt very sick the next day (think prami sick). Since then I have dosed it low but now I am using 250mcg (1/2ml) eod and loving the effects. Maybe it has lost potency but I know it is still working so that's good to know. I dosed it last night slightly higher and woke up before my alarm (6 hours sleep) but felt very refreshed. This is what prami used to do to me but prami is just so potent it can go wrong.. very wrong if dosed too high.