Hi Appaloosa,
Great job treating that tumor!!! Thanks for the testimonial.
When you mix the mms2 with water, if you don't dilute enough it is pretty nasty tasting, very acidic and might burn some. I have put a capsule in a quart of water and drank it without problems.
genesis2forum.org/index.php?option=com_kunena&func=view&catid=28&id=1906&Itemid=66 mms2 in water no capsule
If you just start out slow and with plenty of dilution, like a 1/4 tsp in a quart of water (1/8 th tsp if you want to be really careful), I don't see how you can hurt the horse. Put the powder in and let it sit for a few hours or overnight and then just take the clean liquid from the top to put in the syringe. You don't need the granules. Have water for the horse to drink afterward.
You can also try wrapping the capsule in some kind of food the horse will swallow without chewing if that is possible.
Michael