ED affects approximately 30 million men in the United States. Sildenafil (the active ingredient in Viagra®) is a PDE5 inhibitor — it works by relaxing smooth muscle and increasing blood flow to the penis, enabling natural erections in response to sexual stimulation.
Sildenafil comes in three doses. Your physician will start you at the appropriate dose based on your health profile, age, and current medications — adjusting as needed.
Sildenafil has one of the most extensive safety databases of any medication — with over 25 years of real-world use in hundreds of millions of patients. Most side effects are mild and transient.
Both medications work similarly, but differ in duration and dosing. Sildenafil is ideal for planned encounters; tadalafil is better for spontaneity and daily use.
| Sildenafil | Tadalafil | |
|---|---|---|
| Brand equivalent | Viagra® | Cialis® |
| Clinical success rate | 82% | 85% |
| Time to onset | 30–60 minutes | 30–60 minutes |
| Duration | 4–6 hours | Up to 36 hours |
| Dosing | As-needed only | Daily or as-needed |
| Food interaction | Faster on empty stomach | Minimal food effect |
| Best for | Planned intimacy | Spontaneous activity |
| NuvaMed price | $49/month | $49/month |
A licensed physician consultation, the right prescription, and discreet delivery — all for less than a single Viagra® pill at the pharmacy.
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