SILDENAFIL

(Viagra, Revatio)

Standard Prescription

sildenafil __mg PO Q__H (__mg/kg/dose)

Dosages

Children:
0.25-0.5 mg/kg/dose PO Q6-8H.
Maximum: 2 mg/kg/dose Q6H
Dose is titrated according to pulmonary pressures.
OR
8-20 kg: 10 mg PO TID
>20 kg: 20 mg PO TID

Mechanism of Action

Phosphodiesterase-5 enzyme inhibitor.

Forms Supplied

tablet: 25 mg
suspension (BCCH): 2.5 mg/mL

Comments

For the treatment of pulmonary hypertension.

Hypotension is the dose-limiting side effect.

Drug interactions exist, especially for those metabolized by CYP450 (3A4, 2C9, 2D6), consult Micromedex for a complete list.

Avoid concomitant use with vasodilators eg nitrates.  

References

2, 44, 192

Last Edited

2022-09-09 23:09:20