Tildren PSA (happy update post #11)
So... the mare got IV Tildren on Thursday. It will take a month or so to know whether it works, though I did ride her at the walk yesterday and she felt "looser" than usual.
Tl;dr: horses shouldn't be fed while getting Tildren and should probably not be fed for a few hours after getting it.
The vet (and I) goofed in giving it to her, by letting her eat hay while it dripped in. It was feeding time and she can get pretty antsy about if her food doesn't arrive pronto! Some horses get crampy from Tildren, so the mare got a shot of Banamine first. But vet said if a horse is going to get crampy, it happens right away. She wasn't crampy at all.
So... about 5 hours later, my husband and I were finishing my birthday dinner (I turned 49 on Thursday), and I got a call from the barn manager saying that the mare was very unhappy and not interested in hay (a VERY bad sign in this horse, who is crazy for her food.) On-call vet advised 350 ccs milk of magnesia, and was very unhappy that the other vet (the junior one) had let her eat while getting Tildren. By the time we got to the barn, the mare was feeling a bit better but still had a very grumpy tummy. Junior vet called to see if she should stop by, but I didn't think she needed to. It was pretty obvious that senior vet had called her and yelled at her!
After 2 hours of observation and hand walking, she passed a LOT of gas and was instantly back to her usual hungry self. She started sniffing around for every last scrap of hay in her stall (there were a few scraps mixed with her bedding) and was NOT happy that we wouldn't give her more (vet said no hay until Friday morning and then in small amounts.) Once she'd pooped, we went home and she's been 100% fine ever since.
Now of course, in retrospect... Tildren is in the same class of drugs as the human drug Fosamax, which is used to prevent osteoporosis. And the instructions for taking Fosamax are very specific that it MUST be taken on an empty stomach, and no eating for at least 30 minutes after taking it. So why would Tildren be any different?