glutamine glutathione is one of the most reflexively prescribed gut supplements in functional medicine. The rationale is good tho. It fuels enterocytes, supports tight junction integrity, and helps repair the epithelial barrier. What Glutamine vs Glutathione - What’s

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Melatonin mitigates disrupted circadian rhythms, lowers intraocular pressure, and improves retinal ganglion cells function in glaucoma

Others are either experimental or marketed without sufficient evidence

J Psychiatry Neurosci 40(2):12633 Bhat AR et al (2020) Effects of sleep deprivation on the tryptophan metabolism

Xenoestrogen interaction with human sex hormone-binding globulin (hSHBG)

Recent research has found that L-citrulline can inhibit ferroptosis and induce the activation of the AMPK pathway, improve the intestinal antioxidant capacity, and alleviate intestinal injury caused by iron overload [88] (Figure 3)