--- In EquineCushings@..., "ponyjackpal" <takarri@...> wrote: ... Ian has written some wonderful articles on this exact concern. The powdered beside expiry date issues. I thought it might be the water based that there were issues with? ....Both has issues, can not remember the exact differences just the shelf life is NOT nearly as long as the powdered and you have to be more particular in how you store. Check the files on purchase and shelf life information on the different formats with the Pergolide. Many phamacies do not have the up to date information Ian Hudgings has provided for us. Angela jarrahbrearebreazebridie