Who is the manufacturer of the skin care medicine in UK in which niacinamide vitamin is an active ingredient which is found in food? 
Freederm:  The products include Nicotinamide as an active ingredient, which is claimed by the company to be "clinically proven to help get rid of inflamed red spots". Nicotinamide: Nicotinamide (NAA), also known as niacinamide, is a vitamin found in food, used as a dietary supplement, and used as a medication.
i don't know