Here's what I found out:
1) By the third or fourth day on UlcerGard, Izzy was a much happier camper.
2) Izzy is more tense and anxious when the weather is less than perfect.
3) In less than perfect weather, Izzy does better with some lunging before he's ridden.
4) Five days after completing the first tube of UlcerGard, Izzy was a complete jackass.
5) Based on the return of the jackassery, I am changing Izzy's supplements to include something to aid his digestive health.
In his experience, ulcers are expensive to treat, I agreed, so finding the least expensive, but still effective, treatment was our goal. We also discussed a variety of studies, one of which showed that gastric ulcers in horses responded well to a lower dose (1 mg/day) of omeprazole as compared to what is prescribed in GastroGard (4 mg/day).
UlcerGard comes in a four-dose tube for around $35, or you can get it in a six-tube pack for $202.50 which contains twenty-four doses of 1 mg/day. I have three doses left from my second tube, so if I combine those with the twenty-four doses, I'll get four weeks of treatment instead of the three that Dr. Tolley proposed.
So. Does my horse have ulcers? I don't know, but I am treating him as though he does. Wish us luck!