Two things come right off the top of my head, SSRI in selective serotonin re uptake inhibitors. These are a class of drugs like St. John's Wort that have a particular effect on the brain. And there are a whole list of foods that one should not consume while on SSRI's. Don't know much about the brain... This is a pretty hot topic as far as I understand and relevant health information is of the most absolute importance.
The other is a bit more risky in Silver Standard Resources Inc, whose ticker symbol on the Nasdaq is SSRI. With the .co that would make sense for them to have that domain name. Would you consider approaching them? That might be worth your while.
I think either way you look at it this is a decent domain name that should resell. Not really sure on value though. the letters are great but the .co really kills it, especially with SSRI medically speaking.
Did you have these intentions when acquiring it?