There seems to be a number of different vet opinions on how often to give pentosan injections and I'm interested to know what your vet has prescribed in terms of frequency and why that period of time if you give it to your horse? I've had Benny on pentosan injections for a number of months now and my vet told me just to give monthly injections right from the start (no 4 weekly dose to start) and that giving it any further apart than monthly was pointless (can't remember her exact words but along those lines). He had very mild intermittent lameness which he hasn't had since being on the pentosan. Other people I know have been told to give 4 weekly injections and then after that monthly doses and yet others have been given the initial weekly doses but have been told to give it 3/6/12 monthly. So I'm a little confused. Do people still find they're horse benefits if the injection is spread out? Don't know whether to try spreading Benny's out and see how he goes.