Metoprolol vs Theophylline
## Metoprolol vs Theophylline: Overview
This comparison examines the pharmacological differences between **Metoprolol** and **Theophylline**.
## Mechanism of Action
**Metoprolol**: Selective beta-1 adrenergic receptor blocker.
## Pharmacokinetics
**Half-life**: Metoprolol — 3-7 hours; Theophylline — N/A.
## Chemical Properties
**Molecular Formula**: Metoprolol — C15H25NO3; Theophylline — N/A.
**Molecular Weight**: Metoprolol — 267.3640 g/mol; Theophylline — N/A.
**Type**: Metoprolol — Small molecule; Theophylline — Protein.