you get more out of it, i got 10,000...............recon with 20ml bac and you have a 500iu/ml solution.................1/2 ml twice a week .........i like the lower dose amount of water
The difference is about 3500iu. A 5000iu vial is over three times more than a 1500iu. Depending on how much you will run you may want to get something like a 5000iu and a 1500iu. If you were to get two 5000iu and only needed 1000iu after you finished your first 5000iu vial the other 4000iu would probably get wasted, as it stays good in the fridge for 60 days and you'd have to throw it away if not used in this time frame.