Viagra Professional vs Norvasc: side-by-side comparison
Viagra Professional (Erectile Dysfunction (ED)) and Norvasc (Cardiovascular Medications) belong to different therapeutic classes and are rarely interchangeable. This page compares the medications' purposes, mechanisms and the situations where each is used.
| Property | Viagra Professional | Norvasc |
|---|---|---|
| Active ingredient | Sildenafil Citrate | Amlodipine |
| Manufacturer | Pfizer | Pfizer |
| Class | Erectile Dysfunction (ED) | Cardiovascular Medications |
| Strengths | 100mg | 2.5mg, 5mg, 10mg |
| Forms | sublingual tablet | tablet |
What's the same
Viagra Professional and Norvasc are used in very different patients, and the points in common are limited. The main shared element is that both meet regulatory standards for efficacy and safety and benefit from pharmacist oversight.
Key differences
Viagra Professional belongs to Erectile Dysfunction (ED) while Norvasc belongs to Cardiovascular Medications. Indications, mechanisms and target populations differ. The comparison is most useful when a clinician has mentioned both medications and the patient wants to understand where each fits.
Mechanism and action
Viagra Professional: Sildenafil citrate inhibits PDE5, allowing the cyclic GMP produced during sexual arousal to accumulate in penile tissue, which relaxes the smooth muscle of the penile arteries and increases blood inflow. Norvasc: Amlodipine selectively blocks L-type calcium channels in vascular smooth muscle, reducing transmembrane calcium influx and producing peripheral arterial vasodilation.
When Viagra Professional is preferred
Viagra Professional is intended for adult men with erectile dysfunction.
When Norvasc is preferred
Norvasc is approved in adults for the treatment of essential hypertension and chronic stable angina, and for vasospastic (Prinzmetal's) angina.
Frequently asked questions
Is Viagra Professional or Norvasc better? ▾
Viagra Professional and Norvasc are not interchangeable — they treat different conditions. Asking which is "better" is meaningful only when a clinician has weighed both for the same specific clinical scenario.
Can I switch from Viagra Professional to Norvasc? ▾
Switching between Viagra Professional and Norvasc is rarely an appropriate decision since they belong to different classes and treat different conditions. The real question is usually whether the diagnosis calls for one medication or the other — which the prescriber resolves.
Do Viagra Professional and Norvasc have the same side effects? ▾
No — they belong to different classes and have distinct side-effect profiles. Each medication has its own prescribing information.
More Viagra Professional comparisons
The information on this website is provided for reference and educational purposes only. It does not replace consultation with a qualified healthcare professional.