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Vitamin B3 Cuts Non-Melanoma Skin Cancer Recurrence by 54%

9/27/2025

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Summary

Story summary

Nicotinamide (vitamin B3) may reduce repeat non-melanoma skin cancers, with up to a 54% reduction when started after the first diagnosis.
In nearly 34,000 patients, 500 mg twice daily produced a 14% overall reduction in recurrence.
Limitations include a predominantly white male Veterans Affairs population; broader research is needed.
Dermatologists urge consulting a doctor before starting nicotinamide and to continue sun protection.

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Story summary

Nicotinamide (vitamin B3) may reduce repeat non-melanoma skin cancers, with up to a 54% reduction when started after the first diagnosis.
In nearly 34,000 patients, 500 mg twice daily produced a 14% overall reduction in recurrence.
Limitations include a predominantly white male Veterans Affairs population; broader research is needed.
Dermatologists urge consulting a doctor before starting nicotinamide and to continue sun protection.