Bill's pure dimethylfumarate thread

[Caroline]

I only handle the dimethyl fumarate for a very short time, Caroline; on the palm of my hand for a bit over a minute each week. No irritation or visible change is evident. There might be a difference related to particle size: In my experience a smaller particle size causes more gastric upset.

Aha, Yes, the particle size may be much smaller with the production they are doing, so it may be a little dusty.