Captopril vs Tacrolimus

## Captopril vs Tacrolimus: Overview

This comparison examines the pharmacological differences between **Captopril** and **Tacrolimus**.

## Mechanism of Action

**Captopril**: First orally active ACE inhibitor; contains thiol group that binds zinc at ACE active site.

**Tacrolimus**: Calcineurin inhibitor binding FKBP12; suppresses IL-2 transcription.

## Pharmacokinetics

**Half-life**: Captopril — 1.9 hours; Tacrolimus — 12 hours.

## Chemical Properties

**Molecular Formula**: Captopril — C9H15NO3S; Tacrolimus — C44H69NO12.

**Molecular Weight**: Captopril — 217.2850 g/mol; Tacrolimus — 804.0180 g/mol.

**Type**: Captopril — Small molecule; Tacrolimus — Small molecule.