I'm on a journey to try to fix my leaky gut, and bought L-glutamine, tried to take 2 times, the first started with 2g, 2x a day

On the third day I noticed that I was suffering very strange symptoms, depression, I was very apathetic , eye pain and a lot of sensitivity to light, anxiety, tired and very brain fog, as I had not changed anything in my diet, even I was quite a long time, the fault was glutamine, after I stopped taking, symptoms were fading, but it took about 3-4 days ... Ok

Now the second attempt, and the reason I will stay away from the L-glutamine forever, I started taking only 2g per day for 2 days, on the second day, I was very very very bad, this time it was three times worse, my two eyes burned and ached, my energy was totally robbed, I was extremely brain fog, and I felt a strange feeling in my whole body, it seemed like something was happening all over my body, and I do not know what it is.

Some say that L-glutamine feeds candida, others say it is die off ... anyway I'll stay away from that, it really scared me, no probiotic or herb that I took gave me so symptoms.

if someone can help me by saying what it is, I'm grateful.

Note: the second time delay even more for the symptoms disappear, I spent horrible days, could not even wake up right so tired and sore all over body