Viagra® Tablets for Erectile Dysfunction

Sildenafil is a prescription medicine for erectile dysfunction in adult men. It helps increase blood flow to the penis during sexual stimulation. This page explains how to use it safely, key cautions, and how to access US delivery from Canada. If you pay cash, you can also see options that may work without insurance.

What Viagra Is and How It Works

Viagra® contains sildenafil, a phosphodiesterase type 5 (PDE5) inhibitor. It supports erections by enhancing nitric oxide–mediated blood flow in penile tissue during arousal. Many adults receive sildenafil 100mg tablets when a prescriber considers that dose suitable. Response varies and depends on timing, sexual stimulation, and individual factors.

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

This medicine is for erectile dysfunction and not for continuous daily use unless your prescriber advises otherwise. Learn more about the condition in our overview of Erectile Dysfunction. For a deeper primer on mechanism and benefits, see Viagra Pill.

Who It’s For

This treatment is for adult men with erectile dysfunction confirmed by a clinician. People taking nitrates for chest pain must not use it. Those using guanylate cyclase stimulators such as riociguat should also avoid it. Some patients start on lower strengths before moving to 100mg sildenafil tablets if directed by a prescriber.

It is not designed for women or children. People with severe heart conditions, recent stroke or heart attack, significant low blood pressure, or vision disorders related to non-arteritic anterior ischemic optic neuropathy should discuss risks carefully. For patients with pulmonary arterial hypertension, sildenafil is available under different dosing schedules; see our category on Pulmonary Hypertension to understand distinctions.

Dosage and Usage

Follow your prescription label. A common approach is one dose taken about 30 minutes to an hour before sexual activity. Do not use more than once per day. A high-fat meal can delay onset. Swallow with water. Avoid grapejuice and grapefruit when possible, since they may increase levels. If vision changes, chest pain, or a severe drop in blood pressure occur, seek medical help.

Some adults are prescribed sildenafil citrate 100 mg. Others use 25 mg or 50 mg depending on tolerability and effect. Use the lowest effective dose your prescriber recommends. Do not share your medicine with others.

For additional practical tips, see Use Viagra.

Strengths and Forms

This medicine is typically supplied as film‑coated tablets. Common strengths include 25 mg, 50 mg, and 100 mg. Availability can vary by manufacturer and market.

Many labels describe sildenafil citrate tablets 100mg for on-demand use in adults, with a maximum frequency of once per day. Your prescriber will determine the right strength for you. Compounded or chewable forms are not standard label presentations.

For a thorough overview of available strengths and practical considerations, visit Sildenafil 100 Mg.

Missed Dose and Timing

This therapy is generally taken only when needed. If you miss a planned dose before sexual activity, take it when you remember, provided it is still appropriate for the occasion. Do not double up or take more than once per day. If you use a scheduled regimen under a specific plan, follow your prescriber’s timing guidance on your label.

Storage and Travel Basics

Store tablets at room temperature in the original container. Keep them dry and away from excessive heat and moisture. Protect from light where possible. Always keep out of reach of children and pets. When traveling, carry the medicine in a labeled, child‑resistant container in your hand luggage. Bring a copy of your prescription and any relevant documents. If you cross borders, allow extra time for screening and keep your name consistent across all records. Do not store tablets in a bathroom due to humidity.

Benefits

This class can help men with erectile dysfunction achieve and maintain an erection with sexual stimulation. Many adults appreciate on-demand use and flexible timing. Tablets are easy to store and travel with. Different strengths allow your prescriber to tailor therapy to your needs.

Comparing options can help with expectations. For a balanced overview of class differences, read Tadalafil Vs Sildenafil.

Side Effects and Safety

• Headache or facial flushing
• Indigestion or stomach upset
• Nasal congestion
• Dizziness or lightheadedness
• Changes in vision, including color tinge

More serious risks can include prolonged erections lasting over four hours, sudden vision loss in one or both eyes, or sudden hearing decrease or loss. Chest pain, severe dizziness, or fainting require urgent care. The risk of low blood pressure increases when combined with nitrates or certain blood pressure medicines. Alcohol can worsen dizziness. Driving or using machinery should be avoided until you know how you respond.

Drug Interactions and Cautions

Avoid nitrates such as nitroglycerin, isosorbide dinitrate, or mononitrate. Do not combine with riociguat. Be cautious with alpha‑blockers; timing and monitoring may be needed. Strong CYP3A4 inhibitors (for example, ketoconazole, ritonavir, or clarithromycin) can increase levels. Some antiretrovirals require careful review. Grapefruit may raise exposure. Severe liver disease or significant kidney issues call for individualized assessment. Review all medicines and supplements with your prescriber before starting. For broader comparisons within the class, see Viagra And Cialis.

What to Expect Over Time

With correct timing and arousal, many men notice effects within the first few uses. Some need more than one trial to understand how meals and timing affect response. If side effects occur, speak with your prescriber about whether a different strength or another PDE5 inhibitor may suit you better. Regular follow‑up helps align expectations and address other health factors that may affect erections, such as blood pressure, diabetes, or stress.

Compare With Alternatives

Brand Viagra® contains the same active ingredient as generic sildenafil; some prefer a specific manufacturer’s tablet shape or imprint for familiarity. Another option is Tadalafil, which can be taken as needed or once daily for some men. If you want to stay with the original brand, consider Viagra® for prescriber‑directed therapy. Your choice should reflect tolerability, timing needs, and medical history.

Pricing and Access

We provide Canadian pharmacy options for erectile dysfunction medicines with transparent online checkout. If you want to compare choices, review current sildenafil 100mg price details on the product page. US shipping from Canada is available with a valid prescription. Final amounts depend on strength, manufacturer, and quantity. For broader men’s health items and related therapies, explore Mens Health. Insurance coverage varies; many customers use personal payment methods for convenience.

Availability and Substitutions

Supply can change by manufacturer. If a particular strength is unavailable, your prescriber may suggest a different presentation or an alternative PDE5 inhibitor. Prescription required and verified.

Patient Suitability and Cost-Saving Tips

Good candidates are adult men with erectile dysfunction who do not take nitrates or riociguat and who can safely engage in sexual activity. Those with significant cardiovascular disease, severe hypotension, or certain eye conditions may need additional evaluation. People with hepatic or renal impairment should review dosing options with a clinician.

To manage costs, ask your prescriber about multi‑month fills when appropriate, since fewer refills can reduce trips and help adherence. Consider manufacturer‑agnostic options that meet your prescriber’s instructions. Set refill reminders so you do not run out before travel or important events. If you switch strengths, use up older tablets only when the prescriber confirms the plan.

Questions to Ask Your Clinician

• Right strength and timing for me
• Interactions with my current medicines
• What to do if side effects occur
• Meal timing and alcohol effects
• When to consider a different PDE5

Authoritative Sources

FDA DailyMed: Sildenafil Tablets

Pfizer: Viagra Product Page

Health Canada DPD: Sildenafil

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