Effects of high-dose vitamin D supplementation in patients with multiple sclerosis: A systematic review of efficacy and safety. Ghamdi K A, Alqarni M, Alamri Z, Wahhas M A, Alkhaldi M, Alsanni A, Alhawaj A F Mult Scler Relat Disord. 2026 Jun 13; 112:107324. PMID: 42320168. Abstract CommentRecommendBookmarkWatch