Ammonia N 13 vs Sildenafil
## Ammonia N 13 vs Sildenafil: Overview
This comparison examines the pharmacological differences between **Ammonia N 13** and **Sildenafil**.
## Mechanism of Action
**Sildenafil**: Selective PDE5 inhibitor increasing cGMP.
## Pharmacokinetics
**Half-life**: Ammonia N 13 — N/A; Sildenafil — 4 hours.
## Chemical Properties
**Molecular Formula**: Ammonia N 13 — N/A; Sildenafil — C22H30N6O4S.
**Molecular Weight**: Ammonia N 13 — N/A; Sildenafil — 474.5800 g/mol.
**Type**: Ammonia N 13 — Small molecule; Sildenafil — Small molecule.