1. Introduction to Sitagliptin
Sitagliptin Tablets, a potent oral anti-diabetic drug, belongs to a novel class of medications known as DPP-4 inhibitors. Approved by the FDA in 2006, sitagliptin has since become one of the most prescribed oral medications for managing type 2 diabetes, especially when diet and exercise alone are insufficient. Developed by Merck & Co., the drug is widely available in numerous countries under brand names like Januvia.
Designed for ease of use and patient compliance, sitagliptin provides consistent blood glucose control with a low incidence of hypoglycemia. Unlike traditional medications like insulin or sulfonylureas, it doesn’t stimulate insulin secretion unless blood sugar levels are elevated, which results in fewer glucose “crashes.”
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2. Mechanism of Action
Sitagliptin works through a smart and elegant biological pathway. It inhibits the enzyme dipeptidyl peptidase-4 (DPP-4), which is responsible for breaking down incretin hormones like GLP-1 (glucagon-like peptide-1) and GIP (glucose-dependent insulinotropic peptide).
By preserving these incretin hormones, sitagliptin increases insulin release from pancreatic beta cells in response to meals, while simultaneously decreasing glucagon secretion from alpha cells. This dual action lowers postprandial and fasting blood glucose levels, effectively mimicking and supporting the body’s natural insulin-glucagon balance.
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3. Benefits and Therapeutic Advantages
The benefits of sitagliptin extend far beyond basic blood sugar control. Here are the core advantages:
• Minimal Risk of Hypoglycemia: Unlike sulfonylureas or insulin, sitagliptin only acts when blood sugar levels are high.
• Weight Neutrality: Sitagliptin does not promote weight gain—a critical factor for many T2DM patients.
• Oral Convenience: Taken once daily with or without food.
• Well-Tolerated: Minimal gastrointestinal or systemic side effects.