l-glutamine and gross feces question

I started the scdiet(6 months ago) at the same time I started to take a teaspoon of l-glutamine first thing in the morning on an empty stomach.Since then my bowl movements were solid as always but very grainy and could see lots of undigested food in it.(sorry about the gross description)I ran out of L-glutamine about a week ago and the last 4 days my bowel movements are smooth again.(sorry again) I thought the grainyness was caused by the diet but I am still on it  ,does anyone else experienced that with l-glutamine ,the only other change was for the last three days I have been eating my scd yogurt first thing on an empty stomach,read somewhere that its better(I can honestly say I was never concern about the appearance of my poop until I was diagnosed,now its an inspection                                                           thank you

 By grainy I mean like large grains of sand,but fully forms,its the texture I am refuring to.My diet consists of lots of fruits and vegetables,fish ,chicken,eggs,  hard cheeses baked goods made with almond flour,yogurt.Pretty boring!

It's by Trophic,pure l-glutamine powder,I take one teaspoon mixed in water,but it calls for 2 teaspoons,and it disolves in the water before I drink it,but anything is possible.

I take l-glutamine before bed on an empty stomach. My poops for quite some time now have been just right. Not saying that's due to the l-glutamine, but it's definitely not causing any problems with them.