Expiration?

[Jwishbone]

I have 3 bottles of Epi that I bought quite awhile back.........maybe a year and a half or 2 years ago. There is no expiration date or anything on the bottles. Is it still good or does it have some sort of expiration time to it?

[lennoxchi]

where have they been kept? if they've been kept in a cooler, darker place than say a dresser, out in the open then they s/b fine. there's really only one way to know for sure. if anything though they might have lost some potency, that s/b it.