2 DOSAGE AND ADMINISTRATION
Sildenafil is the active ingredient in Viagra, and it’s also available as a generic, unbranded tablet. Both treatments are medically identical, but branded Viagra costs up to 95% more because of the premium brand name.Generic manufacturers have to demonstrate that they are medically identical to the branded product — in other words, they offer the same quality, strength, stability and effectiveness. We ship every order in plain, discreet packaging, without any branding or labels. You don’t need health insurance or an existing prescription to use our service. Our clinicians will issue a free private prescription if you’re eligible for treatment. After you’ve filled out the online consultation, you’ll be able to choose from recommended treatments for erectile dysfunction.You’ll have the option to make a one-time purchase, or start a subscription.If you subscribe we’ll automatically refill your treatment so you don’t run out, without the need to regularly complete a consultation or checkout. You can cancel subscription online at anytime.
What do Penile Problems Look Like?
Sildenafil (Viagra) is used to treat erectile dysfunction (impotence or an inability to get or keep an erection) in men.1 Sildenafil can also be used to treat premature ejaculation.2,3 Sildenafil (Viagra) is used to treat erectile dysfunction (impotence or an inability to get or keep an erection) in men.1 Sildenafil can also be used to treat premature ejaculation.2,3 Sildenafil is in a class of medications called phosphodiesterase (PDE) inhibitors and treats erectile dysfunction by increasing blood flow to the penis during sexual stimulation.4 It may also be effective for treating premature ejaculation, particularly when paired with an SSRI such as citalopram (Celexa®), escitalopram (Lexapro®) and Sertraline (Zoloft®).5,6 Sildenafil is in a class of medications called phosphodiesterase (PDE) inhibitors and treats erectile dysfunction by increasing blood flow to the penis during sexual stimulation.4 It may also be effective for treating premature ejaculation, particularly when paired with an SSRI such as citalopram (Celexa®), escitalopram (Lexapro®) and Sertraline (Zoloft®).5,6 Sildenafil usually begins to work for erectile dysfunction within 30 minutes.7 Sildenafil usually begins to work for erectile dysfunction within 30 minutes.7 The effects of sildenafil typically last up to four hours, with the effectiveness starting to wear off after two hours. If you experience a prolonged or painful erection for four hours or more, contact your doctor immediately.8 The effects of sildenafil typically last up to four hours, with the effectiveness starting to wear off after two hours. If you experience a prolonged or painful erection for four hours or more, contact your doctor immediately.8 Sildenafil can take five or six hours to fully leave your system, but a high dosage may take longer.9 Sildenafil can take five or six hours to fully leave your system, but a high dosage may take longer.9 Do not take sildenafil more than once per day. Always follow medication instructions exactly as prescribed.10 Do not take sildenafil more than once per day. Always follow medication instructions exactly as prescribed.10 Your healthcare provider will tell you how much to take and when to take it based on your physical health, your symptoms and other factors.
Marketing and sales
Do not exceed their recommended dosage.11 Your healthcare provider will tell you how much to take and when to take it based on your physical health, your symptoms and other factors. Do not exceed their recommended dosage.11 If you are taking sildenafil to 50 mg sildenafil price treat erectile dysfunction, follow your doctor's directions. The best time to take sildenafil is about one hour before sexual activity, but you can take the medication any time from four hours to 30 minutes before sexual activity. Follow the directions on your prescription label carefully and ask your doctor or pharmacist to explain any part you do not understand. Do not take more or less of it, or take it more often than prescribed by your doctor.
Tadalista Super Active
If you are taking sildenafil for erectile dysfunction, your doctor will probably start you on 50 mg of sildenafil and increase or decrease your dose depending on your response to the medication. Tell your doctor if sildenafil is not working well or if you are experiencing side effects.12 If you are taking sildenafil to treat erectile dysfunction, follow your doctor's directions. Tell your doctor if sildenafil is not working well or if you are experiencing side effects.12 Sildenafil tablets for erectile dysfunction come in different strengths ranging from 20 mg to 100 mg. The usual dose is 50 mg, taken once per day when you need it. The dose can be increased to 100 mg or decreased to 25 mg depending on its effect.13 Sildenafil is prescribed off-label for premature ejaculation but has been found effective in 50 mg dosages.14 Work with your healthcare provider to find the right dosage for you. Order in4 hrs 46 minsfor delivery by tomorrow Menu SECTIONS Home Drug Monographs Browse by brand Browse by drug class Browse by generic Browse by therapeutic category Monograph Updates Resource Centers Allergic Disorders Cardiovascular Disease Chronic kidney disease Dermatological Disorders Diagnostic Agents Endocrine Disorders Gastrohepatic Disorders Geriatrics Hematological Disorders Immune Disorders Immunization Infectious Diseases Metabolic Disorders Musculoskeletal Disorders Neurologic Disorders Nutrition Ob/Gyn Oncology Ophthalmic Disorders Oral Health Otic Disorders Pain Management Pediatrics Poisoning & Drug Dependence Psychiatric Disorders Respiratory Disorders Urological Disorders News & Features News Drug News Alternative Medicine Safety Alerts And Recalls Biosimilars and Generics News Drugs In The Pipeline The Weekly Dose Podcast Conference Coverage Guidelines Medical Technology Healthcare Policy InsightRx Features Clinical Challenge Clinical Quizzes Practice, Policy & Legal Clinical Charts Clinical Tools Medical Calculators ICD-10 Codes Special Collections CME/CE MPR App Haymarket Medical Network Cancer Therapy Advisor Clinical Advisor Clinical Pain Advisor Dermatology Advisor Endocrinology Advisor Gastroenterology Advisor Hematology Advisor Infectious Disease Advisor Medical Bag MPR Neurology Advisor Oncology Nurse Advisor Ophthalmology Advisor Optometry Advisor Psychiatry Advisor Pulmonology Advisor Rare Disease Advisor Renal and Urology News Rheumatology Advisor Sleep Wake Advisor The Cardiology Advisor Vaccine Advisor Subscribe Part of the Search for a drug monograph: GO Sildenafil Drug Name LIQREV REVATIO REVATIO INJECTION REVATIO ORAL SUSPENSION VIAGRA VYBRIQUE Close more info about VYBRIQUE Loading..
- Sildenafil generic is classified as a phosphodiesterase type 5 inhibitor.
- It can be prescribed for pulmonary hypertension as well as erectile dysfunction.
- The drug should not be combined with nitrates due to severe blood pressure drops.
- Overdose symptoms include severe hypotension, dizziness, and vision changes.
- Storage should be in a cool, dry place away from children and pets.
- Always follow the prescribed dosage and do not exceed recommended limits.
Close more info about VYBRIQUE Loading.. Want to read more?
| Product | Dosage | Quantity + Bonus | Price | |
|---|---|---|---|---|
| Kamagra Soft Tabs | 100mg | 180 + 8 Pills | 425.45€ 405.19€ | |
| Kamagra Oral Jelly | 100mg | 63 + 7 Sachets | 224.18€ 213.50€ | |
| Viagra Generic | 50mg | 120 + 6 Pills | 129.64€ 123.47€ | |
| Kamagra | 100mg | 180 + 6 Pills | 436.79€ 415.99€ | |
| Viagra Generic | 200mg | 90 + 6 Pills | 170.79€ 162.66€ | |
| Kamagra Oral Jelly | 100mg | 30 + 5 Sachets | 136.20€ 129.71€ | |
| Kamagra Polo | 100mg | 272 + 12 Pills | 622.94€ 593.28€ | |
| Viagra Generic | 150mg | 60 + 4 Pills | 111.25€ 105.95€ | |
| Kamagra Polo | 100mg | 180 + 8 Pills | 446.52€ 425.26€ | |
| Viagra Generic | 200mg | 30 + 2 Pills | 83.07€ 79.11€ | |
| Viagra Generic | 100mg | 180 + 8 Pills | 199.37€ 189.88€ | |
| Viagra Generic | 100mg | 120 + 6 Pills | 149.50€ 142.38€ |
Please login or register first to view this content. All content on this page has been medically reviewed by: Hassan Thwaini, Clinical Pharmacist and Copywriter, Master of Pharmacy (MPharm) on 30 March, 2026. Sildenafil is an effective treatment for erectile dysfunction. It sildenafil citrate 120 mg contains the same active ingredient as branded alternatives. Sildenafil works by encouraging more blood to flow to the penis, ensuring a strong erection when you need one. It’s effective for 82% of men.1 Find the clinically proven ED treatment that suits you best. No names, no logos, no delivery fee. 4.6* from over 33,000 people like you. BSc (Hons) MBBS MRCGP AFHEA MA (Hons) AFMCP “Efficacy and Safety of Sildenafil Citrate for Treatment of Erectile Dysfunction in a Population With Associated Organic Risk Factors.” Journal of Andrology (2013).
Key takeaways
Sildenafil is the active ingredient in Viagra, and it’s also available as a generic, unbranded tablet. Both treatments are medically identical, but branded Viagra costs up to 95% more because of the premium brand name.Generic manufacturers have to demonstrate that they are medically identical to the branded product — in other words, they offer the same quality, strength, stability and effectiveness. We ship every order in plain, discreet packaging, without any branding or labels. You don’t need health insurance or an existing prescription to use our service. Our clinicians will issue a free private prescription if you’re eligible for treatment.
Drug forms and uses
After you’ve filled out the online consultation, you’ll be able to choose from recommended treatments for erectile dysfunction.You’ll have the option to make a one-time purchase, or start a subscription.If you subscribe we’ll automatically refill your treatment so you don’t run out, without the need to regularly complete a consultation or checkout. You can cancel subscription online at anytime. Order in4 hrs 46 minsfor delivery by tomorrow Menu SECTIONS Home Drug Monographs Browse by brand Browse by drug class Browse by generic Browse by therapeutic category Monograph Updates Resource Centers Allergic Disorders Cardiovascular Disease Chronic kidney disease Dermatological Disorders Diagnostic Agents Endocrine Disorders Gastrohepatic Disorders Geriatrics Hematological Disorders Immune Disorders Immunization Infectious Diseases Metabolic Disorders Musculoskeletal Disorders Neurologic Disorders Nutrition Ob/Gyn Oncology Ophthalmic Disorders Oral Health Otic Disorders Pain Management Pediatrics Poisoning & Drug Dependence Psychiatric Disorders Respiratory Disorders Urological Disorders News & Features News Drug News Alternative Medicine Safety Alerts And Recalls Biosimilars and Generics News Drugs In The Pipeline The Weekly Dose Podcast Conference Coverage Guidelines Medical Technology Healthcare Policy InsightRx Features Clinical Challenge Clinical Quizzes Practice, Policy & Legal Clinical Charts Clinical Tools Medical Calculators ICD-10 Codes Special Collections CME/CE MPR App Haymarket Medical Network Cancer Therapy Advisor Clinical Advisor Clinical Pain Advisor Dermatology Advisor Endocrinology Advisor Gastroenterology Advisor Hematology Advisor Infectious Disease Advisor Medical Bag MPR Neurology Advisor Oncology Nurse Advisor Ophthalmology Advisor Optometry Advisor Psychiatry Advisor Pulmonology Advisor Rare Disease Advisor Renal and Urology News Rheumatology Advisor Sleep Wake Advisor The Cardiology Advisor Vaccine Advisor Subscribe Part of the Search for a drug monograph: GO Sildenafil Drug Name LIQREV REVATIO REVATIO INJECTION REVATIO ORAL SUSPENSION VIAGRA VYBRIQUE Close more info about VYBRIQUE Loading.. Close more info about VYBRIQUE Loading.. Want to read more?
Is it OK to take 100 mg of Teva sildenafil?
Please login or register first to view this content. All content on this page has been medically reviewed by: Hassan Thwaini, Clinical Pharmacist and Copywriter, Master of Pharmacy (MPharm) on 30 March, 2026. Sildenafil is an effective treatment for erectile dysfunction. It sildenafil citrate 120 mg contains the same active ingredient as branded alternatives. Sildenafil works by encouraging more blood to flow to the penis, ensuring a strong erection when you need one. “Efficacy and Safety of Sildenafil Citrate for Treatment of Erectile Dysfunction in a Population With Associated Organic Risk Factors.” Journal of Andrology (2013). Answer a few simple questions to get the treatment you need. See how we stack up against competitors on costs for sildenafil (generic Viagra®) without insurance. Not only do we offer transparent, low prices on FDA-approved treatments, we offer free erectile dysfunction and affordable premature ejaculation online doctor consultations.
Manufacturers of generic Viagra (sildenafil)
It’s effective for 82% of men.1 Find the clinically proven ED treatment that suits you best. No names, no logos, no delivery fee. 4.6* from over 33,000 people like you. BSc (Hons) MBBS MRCGP AFHEA MA (Hons) AFMCP “Efficacy and Safety of Sildenafil Citrate for Treatment of Erectile Dysfunction in a Population With Associated Organic Risk Factors.” Journal of Andrology (2013). “Efficacy and Safety of Sildenafil Citrate for Treatment of Erectile Dysfunction in a Population With Associated Organic Risk Factors.” Journal of Andrology (2013).
What’s the youngest age for which Viagra is safe to use?
Answer a few simple questions to get the treatment you need. See how we stack up against competitors on costs for sildenafil (generic Viagra®) without insurance. Not only do we offer transparent, low prices on FDA-approved treatments, we offer free erectile dysfunction and affordable premature ejaculation online doctor consultations. Sildenafil (Generic Viagra®) 100 mg Price Example *Discounts for larger quantities as low as $1.00 per tablet. Up to 88% of men who received PDE-5 inhibitors experienced improved erectile function.
Off-label use for Viagra
Our U.S. licensed medical providers are available daily 7 a.m. to 9 p.m. CST via live video visit. We look forward to serving you soon. Sildenafil (Generic Viagra®) 100 mg Price Example *Discounts for larger quantities as low as $1.00 per tablet. Up to 88% of men who received PDE-5 inhibitors experienced improved erectile function. Our U.S. licensed medical providers are available daily 7 a.m. to 9 p.m. CST via live video visit. We look forward to serving you soon. Sildenafil (Viagra) is used to treat erectile dysfunction (impotence or an inability to get or keep an erection) in men.1 Sildenafil can also be used to treat premature ejaculation.2,3 Sildenafil (Viagra) is used to treat erectile dysfunction (impotence or an inability to get or keep an erection) in men.1 Sildenafil can also be used to treat premature ejaculation.2,3 Sildenafil is in a class of medications called phosphodiesterase (PDE) inhibitors and treats erectile dysfunction by increasing blood flow to the penis during sexual stimulation.4 It may also be effective for treating premature ejaculation, particularly when paired with an SSRI such as citalopram (Celexa®), escitalopram (Lexapro®) and Sertraline (Zoloft®).5,6 Sildenafil is in a class of medications called phosphodiesterase (PDE) inhibitors and treats erectile dysfunction by increasing blood flow to the penis during sexual stimulation.4 It may also be effective for treating premature ejaculation, particularly when paired with an SSRI such as citalopram (Celexa®), escitalopram (Lexapro®) and Sertraline (Zoloft®).5,6 Sildenafil usually begins to work for erectile dysfunction within 30 minutes.7 Sildenafil usually begins to work for erectile dysfunction within 30 minutes.7 The effects of sildenafil typically last up to four hours, with the effectiveness starting to wear off after two hours.
| Question | Answer | Notes |
|---|---|---|
| Are generic sildenafil safety? | Yes, when purchased from reputable sources | Approved by health authorities |
| How soon does it work? | Usually within 30-60 minutes | Varies individually |
| Can I take it daily? | Typically not; consult doctor for long-term use | Usually intended for occasional use |
| Are there natural alternatives? | Some herbal remedies, but efficacy is unproven | Consult healthcare provider |
If you experience a prolonged or painful erection for four hours or more, contact your doctor immediately.8 The effects of sildenafil typically last up to four hours, with the effectiveness starting to wear off after two hours. If you experience a prolonged or painful erection for four hours or more, contact your doctor immediately.8 Sildenafil can take five or six hours to fully leave your system, but a high dosage may take longer.9 Sildenafil can take five or six hours to fully leave your system, but a high dosage may take longer.9 Do not take sildenafil more than once per day. Always follow medication instructions exactly as prescribed.10 Do not take sildenafil more than once per day. Always follow medication instructions exactly as prescribed.10 Your healthcare provider will tell you how much to take and when to take it based on your physical health, your symptoms and other factors.
| Condition | Details | Reason |
|---|---|---|
| Temperature | Store below 30°C (86°F) | Prevent degradation |
| Light Exposure | Keep in original container | Protect from light |
| Moisture | Keep dry | Avoid clumping, degradation |
| Out of Reach | Keep away from children | Safety hazard |
Do not exceed their recommended dosage.11 Your healthcare provider will tell you how much to take and when to take it based on your physical health, your symptoms and other factors. Do not exceed their recommended dosage.11 If you are taking sildenafil to 50 mg sildenafil price treat erectile dysfunction, follow your doctor's directions. The best time to take sildenafil is about one hour before sexual activity, but you can take the medication any time from four hours to 30 minutes before sexual activity.
- The availability of sildenafil generics has increased global access to ED treatment.
- Some brands may market sildenafil as "sildenafil citrate" on packaging.
- Patients must be aware of counterfeit products when purchasing online.
- Online pharmacies require proper prescriptions for genuine sildenafil generics.
- Use caution if purchasing sildenafil generics from unauthorized vendors.
- Consult healthcare providers for the best generic sildenafil brand suited for you.
Follow the directions on your prescription label carefully and ask your doctor or pharmacist to explain any part you do not understand.
What happens if I miss a dose?
Sildenafil tablets for erectile dysfunction come in different strengths ranging from 20 mg to 100 mg. Without insurance, sildenafil can cost as much as $15 per tablet.15 RedBox Rx offers sildenafil for as low as $1 per tablet. Sildenafil requires a doctor’s prescription and is not available over the counter.16 Start an online consult for erectile dysfunction or premature ejaculation with RedBox Rx to find fast, affordable and discreet support. Sildenafil is not FDA-approved for women but may be prescribed in certain situations.17 Sildenafil is not FDA-approved for women but may be prescribed in certain situations.17 PDE5 inhibitors such as sildenafil, tadalafil, avanafil and vardenafil all work in the same basic way by relaxing blood vessels to increase blood flow to the penis. They are all effective for treating erectile dysfunction, but they differ mainly in how quickly they start working and how long their effects last.18Read our Complete Guide to Compare ED Medications to learn more.
Recreational use
PDE5 inhibitors such as sildenafil, tadalafil, avanafil and vardenafil all work in the same basic way by relaxing blood vessels to increase blood flow to the penis. It typically has a shelf life of about two years, but check your medication’s bottle for a more specific date.19 It typically has a shelf life of about two years, but check your medication’s bottle for a more specific date.19 Before taking sildenafil: Tell your doctor and pharmacist if you are allergic to sildenafil, any other medications or any of the ingredients in sildenafil products. Do not take sildenafil if you are taking or have recently taken riociguat (Adempas) or nitrates (medications for chest pain) such as isosorbide dinitrate (Isordil), isosorbide mononitrate (Monoket) and nitroglycerin (Minitran, Nitro-Dur, Nitromist, Nitrostat, others). Do not take more or less of it, or take it more often than prescribed by your doctor. If you are taking sildenafil for erectile dysfunction, your doctor will probably start you on 50 mg of sildenafil and increase or decrease your dose depending on your response to the medication. Tell your doctor if sildenafil is not working well or if you are experiencing side effects.12 If you are taking sildenafil to treat erectile dysfunction, follow your doctor's directions. Tell your doctor if sildenafil is not working well or if you are experiencing side effects.12 Sildenafil tablets for erectile dysfunction come in different strengths ranging from 20 mg to 100 mg.
- Sildenafil generic is a cheaper alternative to Viagra for erectile dysfunction treatment.
- Generic sildenafil contains the same active ingredient as branded versions.
- It is approved by regulatory authorities like the FDA for safety and efficacy.
- Generic sildenafil is available in various dosages, typically 25mg, 50mg, and 100mg.
- The availability of sildenafil generics increases affordability for many patients.
- Always purchase from reputable pharmacies to ensure genuine medication.
The usual dose is 50 mg, taken once per day when you need it. The dose can be increased to 100 mg or decreased to 25 mg depending on its effect.13 Sildenafil is prescribed off-label for premature ejaculation but has been found effective in 50 mg dosages.14 Work with your healthcare provider to find the right dosage for you. Sildenafil tablets for erectile dysfunction come in different strengths ranging from 20 mg to 100 mg. Without insurance, sildenafil can cost as much as $15 per tablet.15 RedBox Rx offers sildenafil for as low as $1 per tablet. Sildenafil requires a doctor’s prescription and is not available over the counter.16 Start an online consult for erectile dysfunction or premature ejaculation with RedBox Rx to find fast, affordable and discreet support. Sildenafil is not FDA-approved for women but may be prescribed in certain situations.17 Sildenafil is not FDA-approved for women but may be prescribed in certain situations.17 PDE5 inhibitors such as sildenafil, tadalafil, avanafil and vardenafil all work in the same basic way by relaxing blood vessels to increase blood flow to the penis. They are all effective for treating erectile dysfunction, but they differ mainly in how quickly they start working and how long their effects last.18Read our Complete Guide to Compare ED Medications to learn more. PDE5 inhibitors such as sildenafil, tadalafil, avanafil and vardenafil all work in the same basic way by relaxing blood vessels to increase blood flow to the penis. It typically has a shelf life of about two years, but check your medication’s bottle for a more specific date.19 It typically has a shelf life of about two years, but check your medication’s bottle for a more specific date.19 Before taking sildenafil: Tell your doctor and pharmacist if you are allergic to sildenafil, any other medications or any of the ingredients in sildenafil products.
| Form | Strength Options | Typical Usage Duration | Packaging Types |
|---|---|---|---|
| Tablets | 25 mg, 50 mg, 100 mg | 4-6 hours | Blister packs, bottles |
| Chewables | 50 mg, 100 mg | 4-6 hours | Blister packs |
| Sublingual | 25 mg, 50 mg | 4-6 hours | Little strips |
| Topical Gel | Not commonly available | N/A | N/A |
Do not take sildenafil if you are taking or have recently taken riociguat (Adempas) or nitrates (medications for chest pain) such as isosorbide dinitrate (Isordil), isosorbide mononitrate (Monoket) and nitroglycerin (Minitran, Nitro-Dur, Nitromist, Nitrostat, others).