Educational Link | Research A randomized double-blind placebo-controlled study adding high dose vitamin D to analgesic regimens in patients with musculoskeletal pain. – PubMed – NCBI ByDr Notley Chiropractor & Athletic Therapist in Winnipeg December 31, 2025January 14, 2026 A randomized double-blind placebo-controlled study adding high dose vitamin D to analgesic regimens in patients with musculoskeletal pain. – PubMed – NCBI.