An adult who has been self-medicating, using nutritional therapy for elevated cholesterol, complains of repeated episodes of flushing. The nurse suspects that the patient has been taking
a. niacin.
b. thiamin.
c. riboflavin.
d. pyridoxine.
ANS: A
Niacin is used to reduce cholesterol levels. When taken in large doses, nicotinic acid can cause vasodilation, with resultant flushing, dizziness, and nausea.
Flushing is not a side effect of thiamine, because it does not cause vasodilation.
Flushing is not a side effect of riboflavin, because it does not cause vasodilation.
Flushing is not a side effect of pyridoxine, because it does not cause vasodilation.
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