Generic Viagra — 20–100 mg Tablets
The same active ingredient as Viagra. A well-established PDE5 inhibitor that supports blood flow for erectile function, prescribed after a licensed provider review.
Rx only — requires provider review
Strength
Purchase option
Supply
Sildenafil is the active ingredient in Viagra, offered here as a generic tablet. Like tadalafil, it's a PDE5 inhibitor: it works by relaxing blood vessels and increasing blood flow to support erectile function. Sildenafil has a shorter active window than tadalafil, which some men prefer for predictable, on-demand use.
It's one of the most widely prescribed medications for erectile difficulties, typically used by men who want a straightforward, as-needed option. Your provider selects a strength based on your health profile and can adjust it as needed.
OpenDoseRx treatments are dispensed only after a licensed provider reviews your health intake and determines a prescription is appropriate for you.
How ordering works
Choose your strength
Pick the exact dose and pack size. You see the price before you commit — nothing is hidden until checkout.
A provider reviews your intake
Complete a short medical intake. An independent, licensed U.S. provider decides if it's appropriate — and if they decline, you're refunded in full.
Compounded and shipped
Approved orders are prepared by a licensed U.S. pharmacy and shipped discreetly to your door.
Sildenafil vs. tadalafil: how they compare
A neutral look at two PDE5 inhibitors — their shared mechanism, general differences in onset and duration of action, and the forms they come in.
How PDE5 inhibitors are understood to act in erectile physiology
An educational overview of the PDE5 inhibitor class and the nitric oxide and cGMP signaling pathway it is understood to act on.
Generic vs. brand-name medications: what is actually the same
A neutral, science-focused look at bioequivalence — what a generic medication shares with its brand-name counterpart, and what is allowed to differ.
