Viagra® Tablets for Erectile Dysfunction

Viagra is a prescription tablet for erectile dysfunction. This page explains uses, dosing, and safety, with US delivery from Canada. You can also review Viagra price without insurance.

What Viagra Is and How It Works

Viagra® contains sildenafil, a phosphodiesterase type 5 (PDE5) inhibitor. It helps relax blood vessels in the penis. Sexual stimulation is needed for an erection to occur. The effect supports blood flow when nerves release nitric oxide during arousal.

YouDrugstore is a licensed Canadian pharmacy in Manitoba. Pharmacists review prescriptions before dispensing.

This medicine does not increase desire. It may begin working within the window noted on the official label. Results can vary by dose, timing, food intake, and individual response. If a fatty meal slows onset, your clinician may suggest timing adjustments. For background on class differences, see Tadalafil Vs Sildenafil and What Are Erectile Dysfunction.

Many patients consider generic Viagra as a lower-cost option when appropriate. The active ingredient and labeled uses are the same as the brand when approved by regulators.

Who It’s For

This therapy is indicated for adult men with erectile dysfunction. It is not approved for women or children. Do not use if you take any form of nitrates for chest pain. Combining nitrates with a PDE5 inhibitor can cause a serious drop in blood pressure.

Use caution if you take alpha-blockers, have significant heart disease, recent stroke or heart attack, severe liver or kidney problems, or certain eye disorders such as retinitis pigmentosa. Individuals advised to avoid sexual activity for cardiac reasons should not use this treatment. Discuss your medical history and all medicines with your prescriber.

Dosage and Usage

Take one tablet as needed before sexual activity, as directed on your prescription label. Swallow with water. Do not take more than once per day. Food, especially high-fat meals, may delay onset. Avoid doubling doses.

Your prescriber will choose a starting strength and may adjust based on effectiveness and tolerability. Timing, response, and side effects guide adjustments. If you do not get the desired effect after several attempts, talk to your healthcare professional. For practical timing tips, read How To Use Viagra.

Strengths and Forms

This medicine is available as oral tablets in 25 mg, 50 mg, and 100 mg strengths. Availability can vary by manufacturer and inventory.

Missed Dose and Timing

This is taken when needed. If you were instructed to use it on a schedule and you miss a dose, skip it if it is close to the time for sexual activity. Do not take extra tablets to make up a missed dose. Follow your prescriber’s directions.

Storage and Travel Basics

Store tablets at room temperature, away from excess heat and moisture. Keep in the original container with the pharmacy label. Protect from light and keep out of reach of children and pets.

When traveling, carry your prescription in hand luggage. Keep the labeled bottle and a copy of your prescription. If crossing borders, bring identification and declare medicines if required. Do not repackage into unlabeled bags or weekly boxes for flights. Secure the container to prevent crushing.

Benefits

This treatment can improve the ability to achieve and maintain an erection with sexual stimulation. It is taken only when needed, which offers scheduling flexibility. Many people find the oral route convenient compared with devices or injections. A widely available generic can help reduce out-of-pocket expenses for eligible patients.

Side Effects and Safety

• Headache
• Flushing or warmth
• Indigestion or nausea
• Nasal congestion
• Dizziness
• Visual changes such as color tinge or light sensitivity

Serious reactions are uncommon but require urgent care. These include chest pain, fainting, sudden vision loss, sudden hearing decrease or ringing, an erection lasting more than 4 hours, or signs of an allergic reaction such as swelling or trouble breathing. Combining this medicine with nitrates or certain blood pressure drugs may increase the risk of hypotension.

Drug Interactions and Cautions

Do not use with nitrates (for example nitroglycerin) or riociguat. Strong CYP3A4 inhibitors, such as ketoconazole, itraconazole, ritonavir, or clarithromycin, can raise sildenafil levels. Dose adjustments or avoidance may be necessary under medical supervision. Alpha-blockers may add to blood pressure lowering; spacing or dose changes may be required by your prescriber.

Avoid excessive alcohol, which can worsen dizziness or blood pressure effects. Grapefruit or grapefruit juice may affect levels. Do not combine with other PDE5 inhibitors. If you have significant heart disease, discuss whether sexual activity is safe for you.

What to Expect Over Time

This therapy works when taken before sexual activity and with arousal. Individual response varies. Some people notice better results after several separate attempts as they refine timing relative to meals and stimulation. If side effects limit use or response is limited, your clinician may discuss other doses or alternatives. Adherence to label directions and consistent timing can improve predictability.

Compare With Alternatives

Other PDE5 inhibitors are approved for erectile dysfunction. Tadalafil has a longer duration and can be used as needed or daily for some patients. Vardenafil is similar in duration to sildenafil with slightly different dosing guidance.

Explore options with your prescriber, and consider related products we offer: Tadalafil and Vardenafil. For deeper comparisons, read Tadalafil Vs Sildenafil.

Pricing and Access

You can review product options and Canadian pricing before placing an order. This helps you compare brands and generics with your prescriber’s guidance. Ships from Canada to US so you can arrange convenient fulfilment after your healthcare professional approves your order. A prescription is required and verified.

Looking for current offers? See our Promotions page for any available savings updates.

Availability and Substitutions

Stock can vary. If an item is unavailable, your prescriber may recommend an appropriate alternative in the same class. We support US shipping and can coordinate with you if a substitution is suggested by your clinician.

Patient Suitability and Cost-Saving Tips

This therapy suits many adults with erectile dysfunction when nitrates are not used and sexual activity is safe. It may not be appropriate for those with certain eye conditions, unstable heart disease, or for individuals on interacting medicines. Talk with your prescriber about your medical history and expectations.

To manage costs, discuss generics and multi-month quantities that match your authorized prescription. Ordering a longer supply can reduce per-fill fees and help avoid gaps. Set refill reminders so you have tablets available when needed. If approved by your prescriber, you can buy sildenafil online through YouDrugstore for convenient ordering and follow-up questions.

Questions to Ask Your Clinician

• Is this medication appropriate given my heart and eye history?
• How should I time the dose with meals and sexual activity?
• What side effects should prompt me to stop and call you?
• Are there interactions with my current prescriptions or supplements?
• Could a different PDE5 inhibitor suit my schedule or preferences?
• If cost is a concern, is a generic suitable for me?

Authoritative Sources

• FDA DailyMed: Sildenafil
• Pfizer Product Information
• Health Canada Drug Product Database

Learn More

For broader education on ED therapies and use, see our articles: How To Use Viagra and What Are Erectile Dysfunction. You can also browse our Erectile Dysfunction and Mens Health categories for related options.

Place your order with YouDrugstore for prompt US shipping from Canada, with temperature-controlled handling when required. This information is educational and not a substitute for medical advice; always follow your prescriber and the official label.