Banamine is sold through your vet and I always have it on hand for emergencys. For allergic reations, colic, its really a savior for emergencys.. My vet sells it for $35 for a tube which gives me 1000lb doses, and when I have had a couple colic situations, and one alllergic reaction due to vacinations, that was her prescription before she came out and it remedied my emergencies.

Sounds like you are doing a great job, and I totally do the stalker thing as well as its impossible not to. If he is pooping that is a great sign! Just keep him off the food for at least a couple hours, and slowly add bland food back into his diet... ( Also of course whatever the vet says if you get through )