Yet on the whole, the niacin flush is associated with beneficial health effects. Niacin specifically activates the high affinity G-protein coupled receptors, GPR109a and b, which then leads to release of a variety of prostaglandins that results in the flush response.
professional courtesy is something to be given by the off duty officer to an on duty officer not the other way around a working cop may use discretion on minor violations without fear of repercussions this consideration is extended to citizens and certainly can also be extended to off duty cops
Professional courtesy means making no charge to anyone, patient or insurance, for medical care. There are no special exceptions in the law that allow professional courtesy to physicians in situations where the same courtesy could not be extended to all patients.ntroduction. Professional courtesy  taking care of the families of other physicians without charge  is a tradition that dates back to Hippocrates. The practice served to build bonds between physicians, and to reduce the incentive for physicians to treat their own families.