You're welcome. Since we're on the subject of minis, here are a few health-related matters that are pretty common to them:
It is generally considered a bad idea to use moxidectin (Quest) wormer on them. In fact, the label has a caution against using it on small, young, or underweight animals; the mode of action depends on a certain amount of body fat, which such animals may not have. It is very, very easy to overdose a mini with Quest. Moxidectin is safe when given in appropriate doses, and if a vet wants that specific wormer, they will also have a specific dose in mind. So if a vet wants to use Quest, follow their instructions to the letter. Otherwise, use a different wormer (most folks like ivermectin).
A lot of people have the same concern about Bute (phenylbutazone), because once again, it is very easy to overdose a mini with this product. Any horse can get ulcers from long-term use of Bute, but minis are more prone to it. Banamine is considered a safer choice of pain reliever, but even it has issues when given long term.
An issue I deal with every year is reaction to vaccines. I'm told this is more common in minis, because the way the vaccine is formulated and given, it's the same sized dose, whether the animal is a 2000-pound draft or a 200 lb mini, so it's proportionately a lot more material for the smaller body to deal with. Both Betsy (the mini mule) and Blondie (35 inch miniature horse) get very, very sore from their shots, and have to have at least one dose of Banamine per day for 3 days while they recover from the reaction. Betsy also shows significant swelling, which progressed for days the first time I got her inoculated (now, I know how to keep it from happening). Not all minis react like this, but some do. It's possible that giving one shot at a time would reduce the reaction, but I have a hard time justifying the expense of 3 separate farm visits just to find out. Also, Betsy and Syd (40 inch oversized mini) make the whole process a real circus, and I'd just as soon get that over with one time and done!