Penicillin G vs Trimethoprim

## Penicillin G vs Trimethoprim: Overview

This comparison examines the pharmacological differences between **Penicillin G** and **Trimethoprim**.

## Mechanism of Action

**Trimethoprim**: Dihydrofolate reductase inhibitor (bacterial selective).

## Pharmacokinetics

**Half-life**: Penicillin G — N/A; Trimethoprim — 8-10 hours.

## Chemical Properties

**Molecular Formula**: Penicillin G — N/A; Trimethoprim — C14H18N4O3.

**Molecular Weight**: Penicillin G — N/A; Trimethoprim — 290.3180 g/mol.

**Type**: Penicillin G — Small molecule; Trimethoprim — Small molecule.