What is sildenafil used for?

Sildenafil is FDA-approved to treat erectile dysfunction (ED) in adult men. It improves blood flow to the penis during sexual stimulation, helping to achieve and maintain an erection. A different formulation of sildenafil (Revatio) is used for pulmonary arterial hypertension.

Is sildenafil the same as Viagra?

Yes, sildenafil is the active ingredient in Viagra. Generic sildenafil contains the same medication at the same strengths and is held to the same FDA standards, typically at a lower cost.

Do I need a prescription for sildenafil?

Yes, sildenafil is a prescription-only medication in the U.S. A licensed healthcare provider must review your health history and medications to confirm it is safe and appropriate for you before it can be dispensed.

How long does sildenafil take to work?

Sildenafil typically begins working within 30 to 60 minutes and may be taken up to 4 hours before sexual activity. Sexual stimulation is required for it to work, and taking it with a high-fat meal can delay its effect.

How does ordering and shipping work?

After you place your order, a licensed provider reviews your health information; if appropriate, a prescription is issued and filled by a licensed U.S. pharmacy. Your medication ships directly to you in discreet packaging.

How often can I take sildenafil?

Sildenafil should be taken no more than once per day. Take it only as needed before sexual activity, and follow the dose your provider prescribes.

Who should not take sildenafil?

Anyone taking nitrate medications (such as nitroglycerin) or riociguat should not take sildenafil, as the combination can cause a dangerous drop in blood pressure. It may also be unsafe for people with certain heart, liver, or eye conditions, so a provider review is required.

Sildenafil 50mg

Name: Sildenafil 50mg
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Generic For: Viagra

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Sildenafil 50mg is the generic version of Viagra, an FDA-approved tablet used to treat erectile dysfunction (ED) in adult men. It works by increasing blood flow to the penis to help achieve and maintain an erection during sexual activity. After a licensed provider reviews your health information and issues a prescription, your order ships from a licensed U.S. pharmacy.

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Buy Sildenafil 50mg Online

A PDE5 inhibitor for erectile dysfunction (ED)

Medically reviewed by David Paul Mackarey, RPh, Pharmacist-in-Charge

Sildenafil 50mg Quick Facts

Drug class	PDE5 inhibitor
Treats	Erectile dysfunction (ED)
Form	Tablet
Typical dosing	Take 1 tablet by mouth 1-4 hours before sexual activity (take on empty stomach). Never take more than 1 tablet in a 24 hour period.
Prescription required	Yes — prescription only

What Is Sildenafil 50mg?

Sildenafil is a prescription medication in the phosphodiesterase type 5 (PDE5) inhibitor class, best known under the brand name Viagra. It is FDA-approved to treat erectile dysfunction in adult men by relaxing blood vessels and improving blood flow to the penis when sexually stimulated. Sildenafil does not cause an erection on its own and does not affect sexual desire. It is taken as needed before sexual activity, not on a daily schedule for ED.

What Does Sildenafil 50mg Treat?

Erectile dysfunction (ED) in adult men
Difficulty achieving an erection
Difficulty maintaining an erection
ED related to underlying vascular or medical conditions (as directed by a provider)
Pulmonary arterial hypertension (different strength/formulation, brand Revatio)

Sildenafil 50mg Dosage

Take 1 tablet (50mg) by mouth as needed, about 1 hour before sexual activity.
May be taken 30 minutes to 4 hours before sexual activity.
Maximum 1 dose per day; dose may be adjusted (25mg–100mg) by your provider.

Your prescriber will determine the dose and duration that are right for you. Always follow the directions on your prescription label.

Sildenafil 50mg Side Effects

Common side effects

Headache
Flushing
Indigestion (dyspepsia)
Nasal congestion
Dizziness
Visual changes (blue tinge, blurred vision, light sensitivity)
Back pain
Muscle aches

Serious side effects

Stop taking this medication and seek medical attention right away if you experience:

Erection lasting more than 4 hours (priapism)
Sudden vision loss in one or both eyes
Sudden hearing decrease or loss, ringing in the ears
Chest pain or symptoms of a heart attack during sexual activity
Severe allergic reaction (rash, swelling, difficulty breathing)

Warnings & Interactions

Do not use with nitrates (e.g., nitroglycerin, isosorbide) — can cause a dangerous drop in blood pressure
Use caution with alpha-blockers and other blood pressure medications
Do not combine with riociguat (Adempas)
Not recommended if sexual activity is inadvisable due to heart problems
Tell your provider about liver, kidney, or eye conditions and any history of priapism
Do not take with other PDE5 inhibitors (e.g., tadalafil, vardenafil) or recreational "poppers"
Grapefruit juice and heavy alcohol use may increase side effects

Tell your prescriber about all medications, supplements, and health conditions before starting sildenafil 50mg.