Interestingly, MRS-LR04 CFS at 5%, with and without vitamin D, and TIL-LR04 CFS + vitamin D reduced IL-6 levels when compared to the mock (p < 0.05, p < 0.001, and p < 0.0001, respectively; Figure 4d). Here, IL6 is linked to myalgic encephalomeyelitis/chronic fatigue syndrome.