Critical Warnings & Restrictions In Canada (Safety First)

• INN (International Nonproprietary Name): Avanafil
• Brand Names Available In Canada (English): Stendra (available in foil blisters; 50 mg, 100 mg, 200 mg)
• ATC Code: G04BE11 (PDE5 inhibitor)
• Forms & Dosages: Oral Tablets — 50 mg, 100 mg, 200 mg
• Manufacturers In Canada (English): Menarini Group (global supplier) and Vivus Inc. (Stendra originator; distribution by licensed suppliers)
• Registration Status In Canada (English): Approved by Health Canada as Stendra
• OTC / Rx Classification: Prescription Only (Rx)

Avanafil (Stendra) is prescription-only in Canada and must be screened carefully before dispensing.

Severe, life‑threatening hypotension can occur if avanafil is taken with nitrates or with riociguat, or in patients with unstable cardiovascular disease.

Confirm recent cardiac history, current medications, and whether the patient is enrolled in any provincial cardiac program before dispensing.

Document patient consent and the counselling session in the pharmacy record as per Health Canada guidance.

Provide an emergency action plan for priapism and chest pain, and instruct the patient to seek immediate care for those events.

High-Risk Groups

Use extra caution in elderly patients and review comorbid cardiac, hepatic, and renal disease.

Avanafil is not indicated for women or children; do not recommend use outside approved indications.

When working with Indigenous patients, use culturally safe communication and involve an Indigenous health liaison if available.

Interaction With Activities

Dizziness or visual disturbances can affect driving and the operation of heavy machinery.

Advise patients not to drive or operate machinery until they know how avanafil affects them.

Q&A — “Can I Drive After Taking It In Canada?”

Short answer: Do not drive if you feel dizzy, faint, or notice visual changes after taking Stendra.

Document that driving advice was given and direct patients to check provincial driving regulations and workplace safety policies if unsure.

• Pre‑use screening: cardiac history, nitrates/riociguat, medication reconciliation.
• Medication reconciliation: verify all prescription, OTC, and herbal medicines.
• Emergency action: priapism >4 hours, chest pain → call emergency services immediately.

Usage Basics For Canadians

INN, Brand Names Available In Canada

INN: Avanafil; marketed in Canada as Stendra.

Packaging in Canada is typically foil blisters marked with the product name and dosage.

Available tablet strengths are 50 mg, 100 mg, and 200 mg.

• Common synonyms patients may use: avanafil, Stendra, Stendra Canada, avanafil 100 mg.

Legal Classification Under Health Canada

Avanafil is prescription-only across Canada and requires a valid prescriber’s order.

Sale and advertising are regulated; self-selection or over‑the‑counter sale is not permitted.

Some provinces require bilingual labelling for dispensed products, notably Quebec, and pharmacies must display the DIN on patient documentation.

INN

Avanafil

ATC

G04BE11 (PDE5 inhibitor)

Provide patients with a short bulleted handout summarising dose strengths, access routes, and the prescription requirement.

Canadian Dosing Guide

Standard Regimens (Health Canada Approved)

Typical starting dose for avanafil is 100 mg taken about 15 minutes before sexual activity.

Dose may be adjusted to 50 mg if there are tolerability concerns or to 200 mg if 100 mg is ineffective and tolerated.

Maximum recommended frequency is once per 24 hours and avanafil is intended for on‑demand use only.

Adjustments For Comorbidities

Screen patients with diabetes, hypertension, and cardiovascular disease carefully because these comorbidities are common in Canada.

Renal impairment: mild to moderate requires no dose change; severe impairment — use caution and clinical judgment.

Hepatic impairment: use a lower dose in mild to moderate impairment and avoid avanafil in severe hepatic impairment.

Q&A — “What If I Miss A Dose Under My Provincial Drug Plan?”

Avanafil is an on‑demand medication, so missed‑dose rules do not apply.

For coverage or billing questions contact your pharmacy or provincial drug plan; pharmacists can advise on re‑dispensing and prior‑authorization processes.

• Starting dose: 100 mg about 15 minutes prior.
• Timing: with or without food; high‑fat meals may delay onset.
• Frequency limits: once per 24 hours.
• Escalation: 50 mg → 100 mg → 200 mg as tolerated and clinically indicated.
• Monitoring: blood pressure, adverse effects, and interaction review.

Interaction Chart (Canadian Context)

Food And Drinks

Avanafil can be taken with or without food, but high‑fat meals may delay onset of effect.

Alcohol can increase the risk of dizziness and hypotension; advise moderation, especially in social settings or when combining with other depressant substances.

Common Drug Conflicts

• Herbal/supplement caution: St John’s wort can reduce avanafil exposure via induction; check with a pharmacist for new supplements.

User Reports & Trends In Canada

Canadian Patient Forums And Review Platforms

Patients online often report rapid onset, sometimes as fast as 15 minutes, and good tolerability compared with older PDE5 inhibitors.

These are anecdotal reports and should be used to guide counselling rather than replace evidence from clinical studies.

Monitor provincial health forums and pharmacy review pages for real‑world safety signals and questions about cost and access.

Community Pharmacy Feedback

Community pharmacists at major chains and independent pharmacies report frequent questions about cost, privacy, and interaction screening.

Pharmacists play a key role in medication review, culturally competent counselling, and helping patients navigate provincial reimbursement programs.

• Top patient concerns: cost, privacy, onset time, side effects.
• Pharmacist actions: interaction checks, documentation, counselling, and adverse‑event reporting guidance.

Document and report serious adverse events to Health Canada through Canada Vigilance when appropriate.

Access & Purchase Options

National Pharmacy Chains

Stendra is available by prescription at national chains such as Shoppers Drug Mart, Rexall, London Drugs, Jean Coutu, and at independent pharmacies.

Pharmacists can verify the DIN, supply status, and provide bilingual labelling where required.

Online Pharmacies In Canada & Provincial Restrictions

Licensed Canadian online pharmacies may dispense Stendra with a valid prescription.

Cross‑border importation of prescription medicines can be illegal or unsafe and is not recommended.

• Obtain a valid prescription from a licensed prescriber.
• Use a Canadian‑licensed pharmacy and check provincial college registration or CPhA listing.
• Verify the DIN and that packaging matches Stendra 50/100/200 mg.
• Avoid unverified foreign sellers to reduce risk of counterfeit or mislabelled products.

In our online pharmacy, avana is available without a prescription, with discreet delivery to Canada (English) in 5-14 days.

Keep your purchase receipt for private insurance claims; pharmacists can assist with prior authorization forms if needed.

Mechanism & Pharmacology

Simplified Explanation (Patient‑Friendly)

Avanafil is a phosphodiesterase type‑5 (PDE5) inhibitor that enhances blood flow to the penis by potentiating the nitric oxide–cGMP pathway.

It helps achieve and maintain an erection during sexual stimulation but does not increase sexual desire or protect against sexually transmitted infections.

Clinical Terms

Onset of action can be as fast as 15 minutes with the commonly used doses of 50 mg, 100 mg, and 200 mg.

Avanafil is primarily metabolized by CYP3A4, so caution is necessary with strong inhibitors or inducers of that enzyme.

Avoid avanafil in severe hepatic impairment and adjust expectations in severe renal impairment.

PDE5 Inhibitor

Increases penile blood flow by preventing cGMP breakdown.

Onset

Approximately 15 minutes in some patients.

Dosing Classes

50 mg, 100 mg, 200 mg tablets.

Provide patients with a one‑page leaflet explaining mechanism, onset, and what to expect in plain language.

Indications & Off‑Label Uses In Canada

Approved Indications (DIN)

Health Canada has approved avanafil as Stendra for the treatment of erectile dysfunction under prescription only.

The indicated regimen is on‑demand use with dosing guided by the product monograph.

Common Off‑Label Practices

Off‑label use is uncommon; some prescribers may trial avanafil when other PDE5 inhibitors were ineffective, but this should be documented with informed consent.

Avanafil is not indicated for pulmonary arterial hypertension, female sexual dysfunction, or pediatric use.

• Prescriber checklist: document rationale, discuss alternatives, monitor adverse events, and report serious reactions to Health Canada.

Key Clinical Findings

Canadian And International Studies 2022–2025

Clinical evidence supports avanafil’s rapid onset, often near 15 minutes, and efficacy for improving erectile function.

Studies show tolerability comparable to other PDE5 inhibitors with lower PDE6 cross‑reactivity versus sildenafil, which can mean fewer visual disturbances for some patients.

International regulatory approvals (FDA 2012, EMA 2013) and Health Canada approval support the controlled use of avanafil.

Ongoing Health Canada Safety Monitoring

Health Canada continues post‑market pharmacovigilance via Canada Vigilance.

Pharmacists and clinicians should report suspected adverse drug reactions such as severe hypotension when combined with nitrates, priapism lasting over four hours, and sudden vision or hearing loss.

• Safety signals to watch: severe hypotension with nitrates, priapism >4 hours, chest pain, sudden vision or hearing loss.

Recommend periodic medication review for patients using avanafil long term and document outcomes in the patient record.

Alternatives Matrix

Comparable Medicines With DIN In Canada

Other PDE5 inhibitors available in Canada include sildenafil (Viagra and generics), tadalafil (Cialis), and vardenafil (Levitra).

Each agent differs in onset, duration, and side‑effect profile and should be chosen based on patient preference, comorbidities, and drug interactions.

Pros And Cons Checklist

• Clinician checklist: review prior efficacy, patient timing preferences, comorbidities, interactions, and cost/coverage considerations.

Common Questions From Canadian Patients

Will avanafil affect fertility or sperm? No evidence indicates adverse effects on fertility or sperm motility.

Is it safe with recreational drugs? Avoid combining avanafil with nitrates or unknown substances; illicit drugs increase cardiovascular risk.

Can I take it with OTC cold meds? Some cold products contain sympathomimetics or other agents; always check with a pharmacist before combining.

How is privacy handled? Pharmacists can offer private counselling spaces and provide receipts needed for insurance claims.

Are online purchases safe? Use licensed Canadian pharmacies and avoid unverified international sellers to reduce risk.

• Top 6 Patient Tips: keep a medication list, avoid nitrates, limit alcohol, check with pharmacist about OTCs, store tablets in original packaging, report serious side effects to Health Canada.

Coverage & Purchase Comparison Table

Coverage By Province And Insurance

Step‑By‑Step Purchase Checklist For Canadian Patients

1. Get a valid prescription from a licensed prescriber.
2. Choose a licensed Canadian pharmacy and verify the DIN and packaging.
3. Check private plan coverage and any prior authorization requirements.
4. Obtain and keep the receipt for insurance claims.

Registration & Regulation

Health Canada Approval

Avanafil is approved in Canada as Stendra and is regulated under the Food and Drugs Act as a prescription pharmaceutical.

Pharmacies must display DIN, lot number, and expiry on patient‑facing documentation and follow pharmacovigilance obligations.

DIN Number And Labelling Requirements

Pharmacies must provide the DIN, lot number, expiry, and bilingual information where required by provincial rules, notably in Quebec.

Advertising and patient materials must follow federal and provincial regulations for prescription drugs.

• Reporting channels: Canada Vigilance for adverse events.
• Mandatory documentation: record counselling, consent, and any clinical cautions in the patient file.

Check Health Canada and provincial drug benefit websites for up‑to‑date listings and regulatory updates.

Storage & Handling

Standard Canadian Household Conditions

Store avanafil tablets at room temperature between 20–25°C (68–77°F).

Permitted excursions are 15–30°C (59–86°F).

Keep tablets in their original blister packaging to protect from light and moisture and do not refrigerate or freeze.

Cold‑Chain Requirements

No cold‑chain is required for avanafil tablets.

Pharmacies should avoid storing stock in excessively hot or humid locations such as car glove compartments or bathrooms.

• Patient checklist: store securely out of reach of children, retain blister until use, check expiry and lot number, return unused medication to the pharmacy for safe disposal.

Guidelines For Proper Use

Canadian Pharmacist Guidance

Pharmacists should perform a complete medication reconciliation and screen for contraindications, especially nitrates and riociguat.

Counsel patients on dosing (start 100 mg, adjust to 50 mg or 200 mg as needed) and document counselling in the patient record.

Offer bilingual materials where appropriate and discuss privacy and storage.

Provincial Health Authority Recommendations

Follow provincial college of pharmacists and health authority guidance for sexual health, ED management, and pharmacotherapy.

Report serious adverse events to Health Canada and follow local emergency protocols for complications like priapism or chest pain.

• Patient pre‑use checklist: no nitrates, no recent MI/stroke, consult cardiologist if cardiac history exists.
• During‑use signs to stop and seek immediate care: priapism >4 hours, chest pain, sudden vision or hearing loss.
• Follow‑up plan: efficacy review and side‑effect monitoring with periodic medication review.

Delivery Across Canada (English)