Nicotinamide (niacinamide) may help reduce your chances of developing basal cell carcinoma, squamous cells carcinoma and actinic keratosis. This is not just wishful thinking but based upon a well designed Australian clinical study in which they used a dose of 500 milligrams twice a day.
Unlike nicotinic acid, nicotinamide does not improve blood cholesterol numbers or cause flushing. It is sold without a prescription. If you are tempted to try it we suggest that you ask your dermatologist for advice.