Vitamin C and B3 plus chemo-immunotherapy and radiation in small-cell lung cancer. A dramatic response? A case report.

This case report published January 2026 describes an elderly patient with extensive-stage small-cell lung cancer who achieved a near-complete thoracic radiologic remission after combined chemo-immunotherapy, chest and brain radiation, and high-dose vitamin C 3000 mg and vitamin B3 – nicotinamide 3000mg per day used throughout the conventional treatments.  The authors speculate could the additional two vitamins helped the patient in a therapeutic synergy – to help enhance the responses?

https://www.cureus.com/articles/446314-potential-therapeutic-synergy-of-high-dose-vitamin-c-and-nicotinamide-as-adjunctive-therapy-in-an-elderly-patient-with-extensive-stage-small-cell-lung-cancer-a-case-report#!/