Figure 3From: Vitamin D supplementation for patients with multiple sclerosis treated with interferon-beta: a randomized controlled trial assessing the effect on flu-like symptoms and immunomodulatory properties Flu like symptoms score by time from enrollment to vitamin D supplementation. FLS were assessed by monthly phone interviews. Patients rated the extent of FLS on a Likert scale (a total FLS score ranging from 0 to 35). No significant change in FLS severity was noted in both dosage groups.Back to article page