Sildenafil

Sildenafil is the Generic version of Viagra®. It is a prescription tablet used to treat erectile dysfunction in men. It belongs to a drug class called PDE5 inhibitors, which support blood flow in the penis. Doctors prescribe it as needed before sex rather than on a fixed daily schedule. It works alongside sexual stimulation instead of causing an erection by itself. It does not protect against sexually transmitted infections.

Take Sildenafil (Generic Viagra®) exactly as prescribed by your healthcare provider. Sildenafil is generally taken by mouth, usually as needed before sexual activity, and it may be taken with or without food. A high-fat meal can make it take a little longer to start working.

Like all prescription medicines, Sildenafil (Generic Viagra®) can cause side effects. The most commonly reported side effects in the prescribing information include headache, flushing, upset stomach, vision changes, nasal congestion, back pain, muscle pain, nausea, dizziness, and rash. Most side effects are not emergencies, but some symptoms need urgent medical attention.

• Common side effects can include headache, flushing, and upset stomach.
• Some people report vision changes, stuffy or runny nose, back pain, muscle pain, nausea, dizziness, or rash.
• Get urgent medical help if you have an erection lasting more than 4 hours.
• Stop taking it and seek medical care right away if you have sudden vision loss or sudden hearing decrease or loss.
• Stop sexual activity and get medical help right away if you develop chest pain, dizziness, or nausea during sex.

See full Important Safety Information

Sildenafil relaxes blood vessels in the penis so blood can flow in during arousal. Sexual stimulation releases nitric oxide, which raises a signaling molecule called cGMP. The medication blocks PDE5, the enzyme that breaks cGMP down, so the effect lasts longer. That keeps blood flow steady enough for an erection. Without sexual stimulation, nothing happens on its own.

Yes, sildenafil is the active ingredient in Viagra®, so both contain the same medicine. Viagra® is the brand name Pfizer registered; the generic version uses the ingredient name instead. Both are taken by mouth before sex and follow the same FDA-approved labeling, including the same warnings and dosing limits.

It helps a man get and keep an erection when he is sexually aroused. Blood flow in the penis improves for around four to six hours after a dose. The medication does not raise sex drive or cause an erection by itself.

Headache, flushing, and an upset stomach are the effects men report most. The label describes most of these as common rather than emergencies.

Never take more than one dose in 24 hours. For erectile dysfunction, the labeling describes it as an as-needed medicine taken before sex, not a scheduled daily tablet. Doubling up within 24 hours can lead to low blood pressure, serious side effects, or an overdose. The labeling leaves dose and timing decisions to the prescribing clinician.

Never take sildenafil with nitrates for chest pain or with riociguat (Adempas). Blood pressure can drop to an unsafe level. Skip other ED medicines, including tadalafil and Revatio, within 24 hours of a dose. Heavy alcohol can add to dizziness, headache, and low blood pressure. A high-fat meal before your dose can delay how quickly it starts working.

Yes, this medication is prescription-only in the US and always needs a provider’s approval. A licensed clinician reviews your health history, current medicines, and heart health before deciding whether treatment is appropriate. That check matters because the medicine interacts with heart and blood pressure drugs. On US Quick Health the review happens online through a short medical questionnaire.

No. Sildenafil and Viagra® contain the same active ingredient, so neither is stronger. Strength comes from the tablet dose your provider prescribes, not from the brand on the box. Both follow the same FDA-approved labeling for erectile dysfunction, the same warnings, and the same limit of one dose in 24 hours. Packaging can look different, but the medicine inside is the same.

Sildenafil is usually taken 30 minutes to 1 hour before sex and starts working in that window. The effect generally lasts around four to six hours. A meal high in fat beforehand can push the start time back. Taking it once on your own first shows how quickly your body responds. Timing works best when you plan the dose ahead rather than rushing it.

Sildenafil is the same medicine sold under the Viagra® brand, used the same way for erectile dysfunction. Because the active ingredient is identical, the label reports the same effects, side effects, and safety limits for both. The visible differences are the name and the tablet’s appearance.

Generic Viagra® is sildenafil sold under its ingredient name instead of Pfizer’s brand name. It treats erectile dysfunction and belongs to the same drug class, working on blood flow during arousal. It follows the FDA-approved labeling written for Viagra®, including the same warnings.

Our pricing is clearly displayed at the top of every page, with no hidden or additional fees. Free, discreet delivery is always included. Subscriptions offer a lower price than one-time purchases and are the preferred choice for most customers. Your medication is delivered discreetly to your home every month automatically and on time.

VIAGRA (sildenafil citrate) - Official FDA-approved prescribing information including indications, dosing, contraindications, and safety warnings. Source: DailyMed (U.S. National Library of Medicine / NIH) Link: https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=0b0be196-0c62-461c-94f4-9a35339b4501 Published: November 17, 2023

VIAGRA (sildenafil citrate) tablets - FDA-approved prescribing information describing indications, dosage, contraindications, and safety warnings for sildenafil used to treat erectile dysfunction. / Source: U.S. Food and Drug Administration (FDA) Link: https://www.accessdata.fda.gov/drugsatfda_docs/label/2014/20895s039s042lbl.pdf / Published: March 11, 2014

VIAGRA Patient Information Leaflet - FDA-approved patient counseling information explaining how Viagra® is used, how to take it, and important safety information for patients. / Source: Pfizer U.S. Product Labeling Link: https://labeling.pfizer.com/ShowLabeling.aspx?id=652&section=ppi / Published: Not specified (Pfizer Patient Information section for U.S. labeling)