I have been using ansomone then generic blues over the last few years. I have just re ordered and have been offered green tops at 8 ius per vial. They are 10 per box. I have seen the thread on 18 iu generic green tops but when i tried a search on green tops at 8 ius i came up with zero.Any help would be appreciated. I have not reason to doubt my source but better safe than sorry. PS im in the uk if that makes any difference.