Order Sildenafil Online CanadaMedical Informatics Laboratory
About Sildenafil
Overview Sildenafil (available as Generic Viagra or Revatio) is a pharmaceutical agent prescribed to address erectile dysfunction (ED) in men experiencing impotence—difficulty achieving or sustaining an erection. When combined with sexual arousal, sildenafil enhances blood circulation to the penis, aiding in obtaining and maintaining an erection for intercourse. Viagra is the most recognized brand name for this compound. Typically, sildenafil is taken on an as-needed basis before anticipated sexual activity. The medication generally becomes effective within 30 to 60 minutes of ingestion, though it can be administered up to 4 hours prior to intercourse. Sildenafil offers no protection against sexually transmitted infections (including HIV, hepatitis B, gonorrhea, or syphilis). Consistent use of latex condoms during intercourse or sexual contact is essential for disease prevention. Consult your physician or pharmacist for further details or inquiries.Sildenafil Prescription
Sildenafil is a prescription-only medication. All generic formulations supplied via Blink Health Pharmacy are approved by the U.S. Food and Drug Administration (FDA).Related
ED Treatment and Prescription
Generic Viagra
Sildenafil alternatives
Tadalafil (Generic Cialis)
Vardenafil (Generic Levitra, Staxyn)
Avanafil (Generic Stendra)
FAQ
What Causes ED?
Erectile dysfunction (ED) is distinct from reduced sexual desire (low libido), which signifies diminished interest in sexual activity. Learn more.How Long Will I Have To Take ED Meds?
The duration of ED medication use often relates to your health background and lifestyle factors. Learn more.Viagra vs Cialis?
Both Viagra (sildenafil) and Cialis (tadalafil) demonstrate efficacy in treating erectile dysfunction approximately 75-85% of the time. Learn more.How Much Sildenafil Should I Be Taking?
Sildenafil is available in 25mg, 50mg, and 100mg doses. The appropriate dosage (quarter, half, or full tablet) depends on the severity of your ED and your overall health status. Learn more.How to Use Sildenafil
Thoroughly review the Patient Information Leaflet from your pharmacist before initiating sildenafil and with each prescription renewal. Direct any questions to your healthcare provider or pharmacist. For ED treatment, consume this medication orally as prescribed, typically as required. Ingest sildenafil at least 30 minutes, but no more than 4 hours, before sexual activity (optimal effectiveness occurs around 1 hour prior). Limit intake to once per 24-hour period. Consuming a high-fat meal may delay the onset of action. Dosage determination relies on your medical condition, individual response to therapy, and concurrent medications. Disclose all products you are using (prescription drugs, over-the-counter items, herbal supplements) to your doctor and pharmacist. Inform your physician if your condition shows no improvement.Sildenafil Side Effects
Potential side effects include dizziness, headache, flushing, or stomach discomfort. Visual alterations like heightened light sensitivity, blurred vision, or difficulty distinguishing blue/green colors may also occur. Notify your doctor or pharmacist promptly if these effects persist or intensify. Minimize dizziness risk by rising slowly from seated or lying positions. Your healthcare provider has prescribed this medication judging that its benefits outweigh potential risks. Many users experience no serious adverse effects. Sexual activity imposes extra cardiac demand, particularly for individuals with heart conditions. If you have cardiac issues and encounter serious side effects during sex (severe dizziness, fainting, chest/jaw/left arm pain, nausea), cease activity and seek immediate medical assistance. Rarely, sudden vision decrease or permanent blindness (NAION) in one or both eyes may transpire. Discontinue sildenafil and obtain urgent medical care if this occurs. NAION risk is slightly elevated if you have heart disease, diabetes, high cholesterol, specific eye conditions ("crowded disk"), hypertension, are over 50, or smoke. Infrequently, sudden hearing decrease or loss, potentially accompanied by tinnitus and dizziness, may happen. Stop sildenafil and get emergency help if these symptoms manifest. Exceptionally, a painful or persistent erection lasting 4+ hours (priapism) may occur. Cease using the drug and seek immediate medical intervention to prevent permanent damage. Severe allergic reactions are uncommon. However, seek emergency care if signs of a serious allergy appear: rash, facial/tongue/throat swelling, intense dizziness, breathing difficulties. This list may not encompass all possible side effects. Report unlisted effects to your healthcare provider or pharmacist.US Residents: Consult your doctor regarding side effects. Report adverse events to the FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.
Canadian Residents: Seek medical advice about side effects. Report to Health Canada at 1-866-234-2345.
Sildenafil Precautions
Inform your doctor or pharmacist about sildenafil allergies or other sensitivities before use. Inactive components in the product may provoke allergic reactions or other issues; consult your pharmacist. Disclose your complete medical history, especially concerning: cardiac conditions (e.g., heart attack, life-threatening arrhythmia within the past 6 months, angina, heart failure), stroke within the past 6 months, kidney disease, liver disease, hypertension or hypotension, severe dehydration, penile abnormalities (angulation, fibrosis/scarring, Peyronie's disease), history of priapism, conditions increasing priapism risk (sickle cell anemia, leukemia, multiple myeloma), eye disorders (retinitis pigmentosa, sudden vision loss, NAION). Sildenafil may induce dizziness or visual disturbances. Alcohol or cannabis can intensify dizziness. Avoid driving, operating machinery, or hazardous activities requiring alertness or clear vision until effects are known. Limit alcohol consumption. Discuss cannabis use with your doctor. Inform your surgeon or dentist about all products you use (prescription, OTC, herbal) before any surgical procedure. Sildenafil use during pregnancy should be limited to clear necessity. Since pulmonary hypertension poses severe risks to both mother and fetus, do not discontinue this medication without medical direction. Discuss the benefits and risks with your doctor if planning pregnancy, pregnant, or suspect pregnancy. Minimal sildenafil amounts transfer into breast milk. Consult your physician before breastfeeding.Sildenafil Pill Storage
Maintain at room temperature, shielded from light and moisture. Avoid bathroom storage. Keep all medicines out of reach of children and pets. Do not dispose of medications in toilets or drains unless instructed. Discard expired or unneeded products properly via your pharmacist or local waste disposal service.Sildenafil Drug Interactions
Drug interactions can alter medication efficacy or heighten serious side effect risks. This list is not exhaustive. Maintain a complete list of all consumed products (prescription, non-prescription, herbal) and share it with your healthcare providers. Never initiate, cease, or adjust medication dosages without medical approval.Riociguat: Potential interaction exists.
Nitrates: Sildenafil combined with nitrates (e.g., nitroglycerin, isosorbide for angina) or recreational "poppers" (amyl nitrite, butyl nitrite) can cause a dangerous blood pressure drop, leading to dizziness, fainting, heart attack, or stroke. Concomitant use is strictly prohibited.
Alpha Blockers: Concurrent use of alpha blockers (e.g., doxazosin, tamsulosin for BPH or hypertension) may cause excessive blood pressure lowering, resulting in dizziness or fainting. Your doctor may initiate sildenafil at a reduced dose.
Metabolism Affectors: Other drugs can influence sildenafil elimination, impacting its function. Examples include: azole antifungals (itraconazole, ketoconazole), macrolide antibiotics (clarithromycin, erythromycin), HIV protease inhibitors (ritonavir, saquinavir), HCV protease inhibitors (boceprevir, telaprevir), mifepristone, rifampin.
Similar ED/PH Medications: Avoid combining sildenafil with other products containing sildenafil or analogous ED/pulmonary hypertension drugs (e.g., tadalafil, vardenafil).