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Ingredient

Niacinamide (Nicotinamide)

Promising

An NAD+ precursor and B-vitamin form with a long human-use record.

How it works

Converts to NAD+ via the salvage pathway and supports cellular redox metabolism.

Evidence

Pharmacopoeia-grade safety data and several RCTs in dermatology support studied doses.

Studies

Chen et al., NEJM, 2015
500 mg twice daily reduced new non-melanoma skin cancers in high-risk adults.
PubMed 26488693 ↗

One ingredient, one study, one product worth your money.

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