Re: Blood re-test
Sometimes metformin won't work for a horse at all, but as Kirsten already made note- that low dosage won't be very effective. Do you think your vet would be open to joining ECIR or take a look at some material discussing the preferred dosage?
Here is a study you may want to discuss with your vet and test the waters to increase the dose, since providing Metformin is a temporary band aide to reduce numbers: https://ecir.groups.io/g/main/files/Metformin%20in%20Horses.pdf
ALSO- can you locate a livery yard without grass or a track system by you for your horse? I think more movement would be more beneficial for your pony in a herd setting if its possible.
Primary Response Team
September 2018, Summerfield, FL
Shark's Case History: https://ecir.groups.io/g/CaseHistory/files/Candice%20and%20Shark
Shark's Photo Album: https://ecir.groups.io/g/CaseHistory/album?id=71507