Sol, my container of MSM from the feed store says the only ingredient is MSM
(no fillers or other compounds which are found in capsules and tablets). The
DMSO is 99% pure which may or may not be the same quality as one can purchase
at the health food stores. Have used both for a couple of years when I found
out I could get so much more for my money at the feed store. The MSM dissolves
very quickly in water and when a capsule is opened and poured into a glass of
water, it never completely dissolves. This is certainly not scientific
evidence, just anecdotal.