Just throwing this out - constipation is a sign of hypothyroidism. It became a daily problem for me when I developed Hashimoto's. Went away with treated thyroid

I have diarrhea/constipation issues with LC. I found doctors Atkins 3 cups of salad recommendation works for me for both. I think diarrhea in my case is just my body adjusting to the dietary change. It goes away after a couple of weeks and adding fiber by Metamucil or veges helped.

I have accidentally purchased 2 stevia products that contain erythritol. A very small amount works for constipation too.