Diphenhydramine vs Sitagliptin

## Diphenhydramine vs Sitagliptin: Overview

This comparison examines the pharmacological differences between **Diphenhydramine** and **Sitagliptin**.

## Mechanism of Action

**Diphenhydramine**: First-generation H1 antihistamine with anticholinergic properties.

**Sitagliptin**: DPP-4 inhibitor increasing incretin levels.

## Pharmacokinetics

**Half-life**: Diphenhydramine — 2-8 hours; Sitagliptin — 12.4 hours.

## Chemical Properties

**Molecular Formula**: Diphenhydramine — C17H21NO; Sitagliptin — C16H15F6N5O.

**Molecular Weight**: Diphenhydramine — 255.3550 g/mol; Sitagliptin — 407.3140 g/mol.

**Type**: Diphenhydramine — Small molecule; Sitagliptin — Small molecule.