Certified Diabetes Educator Practice Exam 2026 - Free Practice Questions and Study Resource.

Nicotinic acid, also known as niacin, is known to impair insulin secretion. It affects the body’s metabolic processes by influencing lipid metabolism and can lead to insulin resistance over time. This is particularly significant in individuals with diabetes or at risk of diabetes, as reduced insulin secretion can hinder glucose regulation.

Metformin, on the other hand, primarily works by improving insulin sensitivity and does not impair insulin secretion; instead, it can enhance the body's ability to use insulin more effectively. Lisinopril is an ACE inhibitor used primarily for hypertension and does not have a direct role in insulin secretion. Ibuprofen, a non-steroidal anti-inflammatory drug (NSAID), does not affect insulin secretion significantly; its primary function is to reduce inflammation and pain. Understanding these distinct effects is essential in managing diabetes and recognizing how different medications can influence metabolic health.