Viagra® Tablets for Erectile Dysfunction

Viagra treats erectile dysfunction in adult men. This page explains what it is, how to use it, and how to access it without insurance.

What Viagra Is and How It Works

US delivery from Canada is available when your prescription is verified. CanadianInsulin.com is a prescription referral platform. We verify prescriptions with your prescriber when required, and licensed Canadian pharmacies dispense your order. Viagra® contains sildenafil, a phosphodiesterase type 5 inhibitor that helps increase penile blood flow during sexual stimulation. On this page, you can review the Viagra price without insurance and standard safety details.

This medicine inhibits PDE5 in the corpus cavernosum, allowing nitric oxide–mediated vasodilation to persist. It works only with sexual arousal. A high-fat meal may delay the time to effect. For background on erectile dysfunction and metabolic disease, see Diabetes And Erectile Dysfunction and Uncovering The Link.

Who It’s For

The Viagra tablet is indicated for adult men diagnosed with erectile dysfunction. It is not for women or children. Do not use this therapy if you take any nitrate medicines or riociguat, due to the risk of severe hypotension. People with recent cardiovascular events, unstable angina, or significant hypotension should discuss risks with a clinician before starting therapy. Learn more about the condition at Erectile Dysfunction.

Sildenafil is also used at different doses and under other brands for pulmonary arterial hypertension; that use is distinct from ED therapy. For disease education, visit Pulmonary Hypertension.

Dosage and Usage

Take this medicine only as directed by your prescriber. It is generally taken on an as‑needed schedule before sexual activity. Many people are advised to take a single dose about one hour before sexual activity, with or without food. Avoid taking more than once per day.

Higher strengths like Viagra 100mg are reserved for cases directed by a prescriber. A heavy, high‑fat meal may slow onset. Alcohol can worsen dizziness and reduce erectile response; moderation is advised. If you have liver or kidney impairment, or are older, your prescriber may recommend a lower dose. Follow the patient information leaflet for full directions.

Strengths and Forms

This treatment is supplied as oral tablets in commonly published strengths. Availability may vary by pharmacy and manufacturer.

• Sildenafil 25 mg tablets
• Also available in intermediate and higher strengths

Color, shape, and imprint can differ by manufacturer. Your dispensing pharmacy may provide the brand or an approved generic when permitted.

Missed Dose and Timing

This therapy is usually taken when needed, so a missed dose is uncommon. If you are prescribed a regular schedule, take it when remembered unless it is near the next planned time. Do not double up to make up for a missed dose. Avoid taking it more than once daily.

Storage and Travel Basics

Store tablets at room temperature in the original container, away from moisture and direct heat. Keep the bottle closed tightly and out of reach of children and pets. When traveling, carry the labeled container in your hand luggage. You may keep a copy of your prescription or a pharmacy receipt with your medicines to ease security checks.

Benefits

This medicine is taken orally and used only when needed, which many people find convenient. It may improve erectile response during sexual stimulation by enhancing blood flow. The treatment has been widely studied and is available as brand and generic options. Sildenafil self-pay options may be supported by clear, posted pricing and straightforward checkout. Discuss expectations and suitability with a healthcare professional.

Side Effects and Safety

• Headache
• Flushing
• Indigestion
• Nasal congestion
• Dizziness
• Visual color tinge or sensitivity to light

Serious effects can include prolonged erections, sudden vision or hearing changes, and significant drops in blood pressure, especially with nitrates or certain other medicines. Stop use and seek urgent care for chest pain, fainting, or an erection lasting longer than four hours. People with retinitis pigmentosa, significant heart disease, or severe hepatic or renal impairment should review risks with a clinician before use.

Drug Interactions and Cautions

Avoid nitrates in any form and riociguat. Use caution with alpha‑blockers; your prescriber may advise separating administration. Strong CYP3A inhibitors (for example, clarithromycin, certain protease inhibitors) can raise sildenafil levels and may require dose adjustment by your clinician. Grapefruit products can increase exposure. Excess alcohol may increase dizziness and reduce effectiveness. Always provide a full medication list, including over‑the‑counter products and supplements, to your healthcare professional.

What to Expect Over Time

The response is on demand. It should be taken only before anticipated sexual activity and works with sexual stimulation. If the effect seems reduced, discuss factors such as timing with meals, interacting drugs, or dose suitability with a clinician. Do not change the dose on your own. Consistent communication with your prescriber can help optimize safety and outcomes.

Compare With Alternatives

Other phosphodiesterase type 5 inhibitors are available. Tadalafil, sold as Cialis, offers a longer half‑life and may be used as needed or on a daily schedule when prescribed. Vardenafil and avanafil are additional options in the class in certain markets. Suitability, onset, and duration differ by product. Your prescriber can help choose the right option based on comorbidities, concomitant medicines, and personal preferences.

Pricing and Access

Canadian pricing may offer savings compared with typical US retail rates. You can check posted amounts for a Sildenafil cash price and see whether a brand or approved generic is available. We provide clear line items before checkout and support payment options that fit your needs. For deals and limited-time offers, visit Promotions. US shipping from Canada is supported for eligible prescriptions.

Availability and Substitutions

Supply can vary by strength and manufacturer. If a specific product is unavailable, a prescriber may recommend a therapeutically equivalent alternative. When appropriate, pharmacies may dispense an approved generic instead of brand. If you need to Purchase Viagra with a specific manufacturer preference, include that information with your order request so the team can review availability.

Patient Suitability and Cost-Saving Tips

This therapy may suit adults with erectile dysfunction who do not use nitrates or riociguat and who are medically stable for sexual activity. It may not suit people with significant hypotension, severe hepatic impairment, or certain retinal disorders. Ask your clinician about strategies to improve value, such as a longer‑duration supply if clinically appropriate, using the approved generic when permitted, or coordinating refills to reduce pharmacy trips. Set refill reminders so you have tablets available before planned travel or events. If you plan travel, carry only what you need and secure your medicine in a cool, dry place.

Questions to Ask Your Clinician

• Is this class appropriate for my cardiovascular health and current medicines?
• What timing relative to meals is best for my situation?
• What should I do if I experience headache, flushing, or visual changes?
• How should I coordinate this with alpha‑blockers or antihypertensives?
• When should I consider a different PDE5 inhibitor or a dose adjustment?
• Are there lifestyle changes that may improve erectile function alongside treatment?
• What signs mean I should stop the medicine and seek urgent care?

Authoritative Sources

See the manufacturer and regulatory references for complete information: Pfizer Product Page, FDA DailyMed, and Health Canada DPD.

Ready to proceed with your prescription? You can place an order with prompt, temperature-controlled handling when required, and it Ships from Canada to US. This material is informational and does not replace advice from your healthcare professional. Always read the patient leaflet and follow your prescriber’s guidance.