Sildenafil (Generic Viagra®)
Doctor-prescribed ED treatment with fast, predictable onset. Convenient oral tablet. No pharmacy lines.
- Fast onset — most patients feel effect in 30 minutes or less
- Convenient oral tablet for ED treatment
- No membership fees
- Prescribed by a licensed U.S. physician
- No insurance, no membership fees
- Free expedited shipping
Sildenafil is the original PDE5 inhibitor — the same active ingredient as Viagra® — and one of the most studied ED medications in modern medicine. Our compounded sildenafil tablets are taken by mouth and offer a fast-acting, on-demand treatment option. Most patients notice an effect within 30 to 60 minutes of taking the medication. The active window typically lasts 4–6 hours, providing a clear, predictable timeframe for spontaneity.
How Sildenafil works
Sildenafil belongs to a class of medications called PDE5 inhibitors. It works by relaxing blood vessels in the penis, allowing increased blood flow during sexual arousal. The medication doesn’t cause erections on its own — it supports your body’s natural arousal response. Sildenafil is taken as needed before anticipated activity, with onset and absorption affected by food — a heavy or high-fat meal can delay how quickly it works.
Who Sildenafil is for
Sildenafil is appropriate for adult men with erectile dysfunction who are looking for a fast-acting, predictable, on-demand treatment. It’s a strong fit for patients who prefer as-needed dosing over daily medication, who want a clear active window, or who are sensitive to the longer-acting effects of tadalafil. A licensed provider determines whether sildenafil is right for you based on your medical history, current medications, and any cardiovascular conditions.
How to get started
The process is entirely online. Complete a short medical questionnaire about your health history and goals (about 3 minutes). A licensed U.S. physician reviews your information, usually within 24 hours. If sildenafil is appropriate, your prescription ships in plain, unmarked packaging with free expedited delivery.
Compounded sildenafil tablets are prepared by state-licensed compounding pharmacies based on a prescription from a licensed healthcare provider. Compounded medications are not reviewed by the FDA for safety or effectiveness. Sildenafil should not be taken with nitrates or certain other medications — tell your provider about all medications, supplements, and medical conditions before starting treatment. Individual results may vary.
FSA & HSA eligible
Customized to your needs
Free shipping with all plans
Trusted brands
Start your weight loss journey
Care that knows your name
FSA & HSA eligible
Customized to your needs
Free shipping with all plans
Trusted brands
Start your weight loss journey
Care that knows your name
Designed for the moment, not the day.
Some patients prefer the flexibility of a longer-acting option. Others want to know exactly when their medication is active. Sildenafil is built for the second approach — fast onset in 30 minutes or less, predictable 4-6 hour window, clear effect, clear end. For patients who want certainty about timing, that predictability is what makes sildenafil different.
Designed to support how you feel and function.
What makes our Sildenafil different
Predictable timing
A clear 4–6 hour active window means you know exactly when your medication is working.
Easy to take
A simple oral tablet you take with water — no complicated routines or special preparation required.
Discreet from start to finish
Online consultation, plain packaging, no awkward in-person visits. Your treatment, your privacy.
Discover other medication to hit your health goals
Provn connects patients with licensed providers who may prescribe medication through state-licensed pharmacies. Prescription medication is only available if prescribed after an online consultation with a licensed healthcare provider. Sildenafil should not be taken with nitrates or certain other medications — tell your provider about all medications, supplements, and medical conditions. Compounded medications are not FDA approved and are not reviewed by the FDA for safety or effectiveness. Statements on this page have not been evaluated by the Food and Drug Administration. Individual results may vary. Plans are offered as a subscription service which you can cancel at any time. Actual product packaging may appear differently than shown.
FAQs
How quickly does Sildenafil start working?
Most patients notice an effect within 30 to 60 minutes of taking sildenafil. Taking the medication on an empty stomach may result in faster onset, while a heavy or high-fat meal can delay absorption. The active window typically lasts 4–6 hours, providing a clear and predictable timeframe.
How is this different from brand-name Viagra®?
The active ingredient is the same — both contain sildenafil. The difference is that our tablets are prepared by a state-licensed compounding pharmacy rather than manufactured by a brand-name pharmaceutical company. Compounding allows for prescriptions tailored to a provider’s specifications, often at a more accessible price point than brand-name equivalents. Compounded medications are not FDA approved.
Are there any side effects?
The most common side effects of sildenafil are mild and related to its effect on blood vessels — headache, flushing, nasal congestion, and indigestion are typical. Most are mild and diminish with continued use. Serious side effects are rare but include priapism (a prolonged erection lasting more than 4 hours, which requires immediate medical attention), sudden vision or hearing changes, and severe drops in blood pressure when combined with nitrates. Your provider will review your full medical history before prescribing.
Do I need a prescription?
Yes. Sildenafil is a prescription-only medication. Provn connects you with a licensed U.S. physician who reviews your medical history and determines if treatment is appropriate. The consultation is online and takes only a few minutes.
Is my information private?
Yes. All consultations are HIPAA-compliant, and your medical information is shared only with your provider and the pharmacy filling your prescription. Your medication ships in plain, unmarked packaging.
Can I cancel anytime?
Yes. Plans are month-to-month with no long-term commitment. You can cancel through your account dashboard or by contacting our support team at any time.