Good. I almost ordered from what looked like a legit company with great prices. After some research I found a lab result for the peps this company sells and they were all bunk. Not exactly sure how long it would last in the fridge. I would guess a couple months. I definately would't reconstitute anymore than you immediately need. I'm only a few days into it pinning morning before fasted cardio and before bed. I will probably go to three times daily. To be honest I'm pretty excited to finally start after the months of research I've done.