Sildenafil (Generic Viagra)
genericFDA-approved generic since 2017
Est. Cost
$0.50-$10/pill
Sildenafil is the generic version of Viagra and has been a go-to ED treatment for over two decades. As a PDE5 inhibitor, it may help increase blood flow to the penis when sexually aroused, potentially enabling firmer and longer-lasting erections. Since generics became available, the price has dropped significantly, making it one of the most accessible options on the market.
Dosage Format
25mg, 50mg, or 100mg taken as needed, roughly 30-60 minutes before sexual activity. Most providers suggest not exceeding one dose per day.
Type
Generic
Who to discuss it with
Men who want an affordable, well-studied, as-needed option for erectile dysfunction
Key distinction
Sildenafil was the first oral ED medication ever approved, and it remains one of the most widely prescribed treatments worldwide.
Where to Get Sildenafil (Generic Viagra)
Provider listings related to sildenafil (generic viagra). Confirm the exact formulation, current availability, and full price directly.
Hims
Available through online consultation; typically ships in discreet packaging with subscription plans.
$2-$4/dose
Ro
Includes online provider evaluation; often bundled with ongoing care and follow-ups.
$3-$6/dose
BlueChew
Offers sildenafil in chewable tablet form; subscription-based with varying monthly plans.
$2/dose
Rex MD
Online consultation with fast shipping; competitive pricing on generic sildenafil tablets.
$2/dose
How Sildenafil (Generic Viagra) Works
Sildenafil works by inhibiting the PDE5 enzyme, which is responsible for breaking down a substance called cGMP in the smooth muscle of the penis. By blocking PDE5, sildenafil may help cGMP accumulate, relaxing smooth muscle and potentially increasing blood flow during sexual stimulation. Effects typically begin within 30-60 minutes and may last approximately 4-6 hours. It is worth noting that sexual arousal is still required for the medication to work; it does not produce an automatic erection.
Side Effects
Common
- • Headache
- • Facial flushing
- • Nasal congestion
- • Upset stomach or indigestion
- • Dizziness
- • Temporary visual changes (blue-tinted vision in some cases)
Serious risks and warning signs
- • Priapism (an erection lasting more than 4 hours) — seek emergency medical attention
- • Sudden vision loss or changes in one or both eyes
- • Sudden hearing loss or ringing in the ears
- • Chest pain or irregular heartbeat
- • Severe allergic reaction (rash, difficulty breathing, swelling)
Eligibility to Discuss With a Clinician
Sildenafil is generally prescribed to adult men with erectile dysfunction. It may not be suitable for individuals taking nitrate medications (commonly used for chest pain), those with severe cardiovascular conditions, or people with certain rare eye conditions. A licensed provider should evaluate your health history before prescribing.
Related Medications
Provider Reviews
Explore providers in the erectile dysfunction category. This does not mean every provider offers Sildenafil (Generic Viagra); check the exact product with the provider.