Update...the order was on hold due to Ovidac 5,000 iu being on back order. After some emails exchanged, they agreed to substitute the Ovidac 2,000 upon my request. Since I ordered (2) 5k vials, they agreed to send (5) 2k units. Not crazy about how it took me to initiate the inquiry & suggested fix but then it if it all works out in the end, the price & convenience will make up for it. We'll see.