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Sulfonylureas


Sulfonylureas (UK: sulphonylurea) are a class of organic compounds used in medicine and agriculture. They are antidiabetic drugs widely used in the management of diabetes mellitus type 2. They act by increasing insulin release from the beta cells in the pancreas. A number of sulfonylureas are also used as herbicides ("weedkiller"), because they can interfere with plant biosynthesis of certain amino acids.

Sulfonylureas are used primarily for the treatment of diabetes mellitus type 2. Sulfonylureas are ineffective where there is absolute deficiency of insulin production such as in type 1 diabetes or post-pancreatectomy.

Sulfonylureas can be used to treat some types of neonatal diabetes. While historically people with hyperglycemia and low blood insulin levels were diagnosed with Type I Diabetes by default, it has been found that patients who receive this diagnosis before 6 months of age are often, in fact, candidates for receiving sulfonylureas rather than insulin throughout life.

While prior sulfonylureas were associated with worse outcomes, newer agents do not appear to increase the risk of death, heart attacks, or strokes.

Sulfonylureas, as opposed to metformin, the thiazolidinediones, exenatide, symlin and other newer treatment agents may induce hypoglycemia as a result of excesses in insulin production and release. This typically occurs if the dose is too high, and the patient is fasting. Some people attempt to change eating habits to prevent this, however it can be counter productive.

Like insulin, sulfonylureas can induce weight gain, mainly as a result of their effect to increase insulin levels and thus utilization of glucose and other metabolic fuels. Other side-effects are: gastrointestinal upset, headache and hypersensitivity reactions.


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