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They may recommend changing your dose, switching medications, or trying other treatments.

2.4 Dosage Adjustments Due to Drug Interactions

What should I tell my healthcare provider before taking sildenafil?

Simple habits — such as exercising often, eating a balanced diet, and limiting alcohol intake — can all have a positive effect on erections and sexual performance. Our guide to maintaining an erection naturally shares techniques to reduce your risk of ED and enjoy better sex. Learn more about how to take sildenafil in our guide. Most side effects of sildenafil are mild, and it’s uncommon for them to persist longer than the medication is active in your body. However, in rare cases, sildenafil treatment can cause more severe or bothersome side effects. Like most medications, side effects are generally more likely at higher doses than lower doses. For instance, in clinical trials of sildenafil, 16 percent of men reported headaches (the most common side effect) at a dosage of 25mg, compared to 28 percent at 100mg and seven percent who took a placebo.

• Sildenafil LP 100 mg may interact with nitrate medications.
• Do not use sildenafil tablets LP 100 mg if allergic to sildenafil.
• Report any severe side effects such as prolonged erection immediately.

Vision changes (blurred vision or changes in color perception) Vision changes (blurred vision or changes in color perception) Our blog goes over all the possible sildenafil side effects in more detail. Although rare, sildenafil can cause more serious side effects that may need immediate medical attention. Eye problems like blurred vision or sudden, severe loss of vision Eye problems like blurred vision or sudden, severe loss of vision Serious cardiovascular disease — often in people with preexisting risk factors, such as stroke, ventricular arrhythmia (abnormal heartbeat), or heart attack Serious cardiovascular disease — often in people with preexisting risk factors, such as stroke, ventricular arrhythmia (abnormal heartbeat), or heart attack In very rare cases, sildenafil may also cause priapism — a prolonged and painful erection that may last four hours or longer.

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Priapism is considered a medical emergency, so seek medical attention as soon as you can to avoid damaging the erectile tissue inside your penis.

• The effectiveness of sildenafil LP 100 mg can be affected by other health conditions.
• Consult your doctor regularly to assess ongoing suitability of the medication.
• Use as part of a broader treatment plan for sexual health.

With that said, be cautious when taking sildenafil if you have Peyronie’s disease (scar tissue in the penis) or another deformation of the penis that may increase your risk of priapism. Sildenafil and other PDE5 inhibitor medications can interact with other drugs. In particular, sildenafil is known to interact with: Ritonavir and other CYP3A4 inhibitors, such as the antifungals ketoconazole, itraconazole, and erythromycin Ritonavir and other CYP3A4 inhibitors, such as the antifungals ketoconazole, itraconazole, and erythromycin As such, you shouldn’t take sildenafil or brand-name Viagra if you use nitroglycerin or similar prescription organic nitrates.

Drug Class or Name	Effect on Sildenafil	Possible Outcome
Nitrates	Potentiate vasodilation	Risk of severe hypotension
Alpha-blockers	Enhanced blood pressure lowering	Caution advised, dose adjustments needed
CYP3A4 inhibitors (e.g., Ketoconazole)	Decrease sildenafil metabolism	Increased risk of side effects
Blood pressure medications	Additive effects	Monitor blood pressure closely

You also shouldn’t mix sildenafil with recreational drugs called “poppers“ that contain nitrites. Weirdly, grapefruit juice can change the concentrations of PDE5 inhibitors in your body, so you’ll want to avoid it while taking sildenafil. Learn more about sildenafil drug interactions in our guide. It’s best to seek medical advice from a healthcare professional about any medications or supplements you currently take or have recently taken before starting sildenafil.

7.3 Amlodipine

They may recommend changing your dose, switching medications, or trying other treatments. Simple habits — such as exercising often, eating a balanced diet, and limiting alcohol intake — can all have a positive effect on erections and sexual performance. Our guide to maintaining an erection naturally shares techniques to reduce your risk of ED and enjoy better sex. Learn more about how to take sildenafil in our guide. Most side effects of sildenafil are mild, and it’s uncommon for them to persist longer than the medication is active in your body.

Does sildenafil interact with foods or drinks?

However, in rare cases, sildenafil treatment can cause more severe or bothersome side effects. Like most medications, side effects are generally more likely at higher doses than lower doses. For instance, in clinical trials of sildenafil, 16 percent of men reported headaches (the most common side effect) at a dosage of 25mg, compared to 28 percent at 100mg and seven percent who took a placebo. Vision changes (blurred vision or changes in color perception) Vision changes (blurred vision or changes in color perception) Our blog goes over all the possible sildenafil side effects in more detail. Although rare, sildenafil can cause more serious side effects that may need immediate medical attention. Also, be sure to mention any underlying medical conditions you have, including: Heart problems like pulmonary arterial hypertension, angina, or an irregular heartbeat Heart problems like pulmonary arterial hypertension, angina, or an irregular heartbeat A blood disease like leukemia or sickle cell anemia A blood disease like leukemia or sickle cell anemia The more you tell your healthcare provider, the better they’ll be able to assess your personal risk of side effects and make sure you’re safe while using sildenafil. Sildenafil comes in several dosages, but for ED, it ranges from 25 to 100mg. Your healthcare provider may prescribe sildenafil at a dosage of 100mg if you have moderate to severe erectile dysfunction or if you don’t experience any improvements at a lower dosage.

8.2 Labor and Delivery

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Here’s what to keep in mind: Sildenafil might be a more effective ED treatment at higher dosages, but it could also cause more side effects. Sildenafil might be a more effective ED treatment at higher dosages, but it could 50 mg sildenafil price also cause more side effects.

8.5 Geriatric Use

Sildenafil comes in several dosages, but for ED, it ranges from 25 to 100mg. Your healthcare provider may prescribe sildenafil at a dosage of 100mg if you have moderate to severe erectile dysfunction or if you don’t experience any improvements at a lower dosage. Here’s what to keep in mind: Sildenafil might be a more effective ED treatment at higher dosages, but it could also cause more side effects. Sildenafil might be a more effective ED treatment at higher dosages, but it could 50 mg sildenafil price also cause more side effects. Let your healthcare provider know if you experience any issues while using sildenafil to treat ED, including side effects or drug interactions.

Drug Interactions

If you do experience adverse effects with sildenafil that outweigh the benefits of taking it, you may benefit from trying another PDE5 inhibitor, such as Stendra® (avanafil), tadalafil (Cialis®), or vardenafil (previously sold as Levitra®). We offer sildenafil and several other ED medications online, following an online ED consultation with a licensed healthcare provider who’ll determine if a prescription is appropriate. Interested in finding out more before you get started? Our guide to the most common treatments for erectile dysfunction goes into detail about the most effective options, from sildenafil to other FDA-approved medications. Sildenafil: from angina to erectile dysfunction to pulmonary hypertension and beyond. Let your healthcare provider know if you experience any issues while using sildenafil to treat ED, including side effects or drug interactions.

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Eye problems like blurred vision or sudden, severe loss of vision Eye problems like blurred vision or sudden, severe loss of vision Serious cardiovascular disease — often in people with preexisting risk factors, such as stroke, ventricular arrhythmia (abnormal heartbeat), or heart attack Serious cardiovascular disease — often in people with preexisting risk factors, such as stroke, ventricular arrhythmia (abnormal heartbeat), or heart attack In very rare cases, sildenafil may also cause priapism — a prolonged and painful erection that may last four hours or longer. Priapism is considered a medical emergency, so seek medical attention as soon as you can to avoid damaging the erectile tissue inside your penis. With that said, be cautious when taking sildenafil if you have Peyronie’s disease (scar tissue in the penis) or another deformation of the penis that may increase your risk of priapism. Sildenafil and other PDE5 inhibitor medications can interact with other drugs. In particular, sildenafil is known to interact with: Ritonavir and other CYP3A4 inhibitors, such as the antifungals ketoconazole, itraconazole, and erythromycin Ritonavir and other CYP3A4 inhibitors, such as the antifungals ketoconazole, itraconazole, and erythromycin As such, you shouldn’t take sildenafil or brand-name Viagra if you use nitroglycerin or similar prescription organic nitrates.

What are the primary indications for this medication?

You also shouldn’t mix sildenafil with recreational drugs called “poppers“ that contain nitrites. Weirdly, grapefruit juice can change the concentrations of PDE5 inhibitors in your body, so you’ll want to avoid it while taking sildenafil. Learn more about sildenafil drug interactions in our guide. It’s best to seek medical advice from a healthcare professional about any medications or supplements you currently take or have recently taken before starting sildenafil. Also, be sure to mention any underlying medical conditions you have, including: Heart problems like pulmonary arterial hypertension, angina, or an irregular heartbeat Heart problems like pulmonary arterial hypertension, angina, or an irregular heartbeat A blood disease like leukemia or sickle cell anemia A blood disease like leukemia or sickle cell anemia The more you tell your healthcare provider, the better they’ll be able to assess your personal risk of side effects and make sure you’re safe while using sildenafil. If you do experience adverse effects with sildenafil that outweigh the benefits of taking it, you may benefit from trying another PDE5 inhibitor, such as Stendra® (avanafil), tadalafil (Cialis®), or vardenafil (previously sold as Levitra®). We offer sildenafil and several other ED medications online, following an online ED consultation with a licensed healthcare provider who’ll determine if a prescription is appropriate. Interested in finding out more before you get started? Our guide to the most common treatments for erectile dysfunction goes into detail about the most effective options, from sildenafil to other FDA-approved medications. Sildenafil: from angina to erectile dysfunction to pulmonary hypertension and beyond.

• Do not take sildenafil LP 100 mg with other PDE5 inhibitors.
• Swallow tablets whole with water; do not crush or split.
• Contact your doctor if you notice persistent erections lasting over 4 hours.

A systematic review of sildenafil mortality through the years.

Other Available Packages

Regulatory & Marketing

National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK).

Parameter	Value	Description	Observation
Absorption Time	30-60 minutes	Time to reach peak plasma concentration	Typically within 1 hour
Bioavailability	~40%	Fraction of dose reaching systemic circulation	Slightly reduced by food intake
Half-life	4-5 hours	Time for blood concentration to reduce by half	Influences dosing frequency
Peak Plasma	90-180 ng/mL	Maximum concentration after dose	Varies with individual factors

Hims & Hers has strict sourcing guidelines to ensure our content is accurate and current. We rely on peer-reviewed studies, academic research institutions, and medical associations. We strive to use primary sources and refrain from using tertiary references. Bachelor of Arts, Egyptian and Ancient Western Asian Archaeology - Brown University College, 2011 Bachelor of Arts, Egyptian and Ancient Western Asian Archaeology - Brown University College, 2011 Doctor of Medicine - Brown University Warren Alpert Medical School, 2017 Doctor of Medicine - Brown University Warren Alpert Medical School, 2017 Master of Public Health - Columbia University Mailman School of Public Health, 2018 Master of Public Health - Columbia University Mailman School of Public Health, 2018 Master of Liberal Arts, Journalism - Harvard University Harvard Extension School, 2022 Master of Liberal Arts, Journalism - Harvard University Harvard Extension School, 2022 Master of Science, Healthcare Leadership - Cornell University Weill Cornell Graduate School of Medical Sciences, 2024 Master of Science, Healthcare Leadership - Cornell University Weill Cornell Graduate School of Medical Sciences, 2024 Master of Business Administration - Cornell University Samuel Curtis Johnson Graduate School of Management, 2024 Master of Business Administration - Cornell University Samuel Curtis Johnson Graduate School of Management, 2024 Internship - NYU Grossman School of Medicine Internal Medicine Residency—Community Health Track, 2019 Internship - NYU Grossman School of Medicine Internal Medicine Residency—Community Health Track, 2019 Certified in Public Health - National Board of Public Health Examiners, 2018 Certified in Public Health - National Board of Public Health Examiners, 2018 Medical Writer Certified - American Medical Writers Association, 2020 Medical Writer Certified - American Medical Writers Association, 2020 Editor in the Life Sciences - Board of Editors in the Life Sciences, 2020 Editor in the Life Sciences - Board of Editors in the Life Sciences, 2020 Certified Personal Trainer - National Academy of Sports Medicine, 2022 Certified Personal Trainer - National Academy of Sports Medicine, 2022 Certified Nutrition Coach - National Academy of Sports Medicine, 2023 Certified Nutrition Coach - National Academy of Sports Medicine, 2023 Board Certified Medical Affairs Specialist - Accreditation Council for Medical Affairs, 2023 Board Certified Medical Affairs Specialist - Accreditation Council for Medical Affairs, 2023 Certificate of Advanced Education in Obesity Medicine - Obesity Medicine Association, 2025 Certificate of Advanced Education in Obesity Medicine - Obesity Medicine Association, 2025 Regulatory Affairs Certification - Regulatory Affairs Professionals Society, 2025 Regulatory Affairs Certification - Regulatory Affairs Professionals Society, 2025 Medical Expert Board Member - Eat This, Not That!, 2021– Medical Expert Board Member - Eat This, Not That!, 2021– Title: Individuals' Perceptions of the Efficacy, Quality, and Safety of Care Accessed via a Telemedicine Platform: A Retrospective Analysis of Survey Data Published in: Telemedicine Journal and E-Health Date: 2026 URL: Title: Individuals' Perceptions of the Efficacy, Quality, and Safety of Care Accessed via a Telemedicine Platform: A Retrospective Analysis of Survey Data Published in: Telemedicine Journal and E-Health Published in: Telemedicine Journal and E-Health Title: Biomechanical evaluation of a novel suturing scheme for grafting load-bearing collagen scaffolds for rotator cuff repair Published in: Clinical Biomechanics Date: 2015 URL: Title: Biomechanical evaluation of a novel suturing scheme for grafting load-bearing collagen scaffolds for rotator cuff repair Title: Pelvic incidence and acetabular version in slipped capital femoral epiphysis Published in: Journal of Pediatric Orthopaedics Date: 2015 Title: Pelvic incidence and acetabular version in slipped capital femoral epiphysis Title: Relationship between pelvic incidence and osteoarthritis of the hip Published in: Bone & Joint Research Date: 2016 URL: Title: Relationship between pelvic incidence and osteoarthritis of the hip Title: Effects of PDGF-BB delivery from heparinized collagen sutures on the healing of lacerated chicken flexor tendon in vivo Published in: Acta Biomaterialia Date: 2017 URL: Title: Effects of PDGF-BB delivery from heparinized collagen sutures on the healing of lacerated chicken flexor tendon in vivo Dr. Bohl’s medical expertise is regularly featured in consumer health media: Eat This, Not That!

• Do not exceed one dose of sildenafil LP 100 mg per day.
• Common side effects include headache, flushing, and nasal congestion.
• Consult a doctor if you experience chest pain or vision changes.

: Contributor and Medical Expert Board Member on nutrition and wellness topics The Dr. Oz Show: Behind-the-scenes contributor to Emmy Award-winning health segments Sharecare: Public-facing health writer, simplifying complex medical issues for millions of readers Dr.

4.2 Hypersensitivity Reactions

A systematic review of sildenafil mortality through the years. National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK). Hims & Hers has strict sourcing guidelines to ensure our content is accurate and current. We rely on peer-reviewed studies, academic research institutions, and medical associations. We strive to use primary sources and refrain from using tertiary references.

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Bachelor of Arts, Egyptian and Ancient Western Asian Archaeology - Brown University College, 2011 Bachelor of Arts, Egyptian and Ancient Western Asian Archaeology - Brown University College, 2011 Doctor of Medicine - Brown University Warren Alpert Medical School, 2017 Doctor of Medicine - Brown University Warren Alpert Medical School, 2017 Master of Public Health - Columbia University Mailman School of Public Health, 2018 Master of Public Health - Columbia University Mailman School of Public Health, 2018 Master of Liberal Arts, Journalism - Harvard University Harvard Extension School, 2022 Master of Liberal Arts, Journalism - Harvard University Harvard Extension School, 2022 Master of Science, Healthcare Leadership - Cornell University Weill Cornell Graduate School of Medical Sciences, 2024 Master of Science, Healthcare Leadership - Cornell University Weill Cornell Graduate School of Medical Sciences, 2024 Master of Business Administration - Cornell University Samuel Curtis Johnson Graduate School of Management, 2024 Master of Business Administration - Cornell University Samuel Curtis Johnson Graduate School of Management, 2024 Internship - NYU Grossman School of Medicine Internal Medicine Residency—Community Health Track, 2019 Internship - NYU Grossman School of Medicine Internal Medicine Residency—Community Health Track, 2019 Certified in Public Health - National Board of Public Health Examiners, 2018 Certified in Public Health - National Board of Public Health Examiners, 2018 Medical Writer Certified - American Medical Writers Association, 2020 Medical Writer Certified - American Medical Writers Association, 2020 Editor in the Life Sciences - Board of Editors in the Life Sciences, 2020 Editor in the Life Sciences - Board of Editors in the Life Sciences, 2020 Certified Personal Trainer - National Academy of Sports Medicine, 2022 Certified Personal Trainer - National Academy of Sports Medicine, 2022 Certified Nutrition Coach - National Academy of Sports Medicine, 2023 Certified Nutrition Coach - National Academy of Sports Medicine, 2023 Board Certified Medical Affairs Specialist - Accreditation Council for Medical Affairs, 2023 Board Certified Medical Affairs Specialist - Accreditation Council for Medical Affairs, 2023 Certificate of Advanced Education in Obesity Medicine - Obesity Medicine Association, 2025 Certificate of Advanced Education in Obesity Medicine - Obesity Medicine Association, 2025 Regulatory Affairs Certification - Regulatory Affairs Professionals Society, 2025 Regulatory Affairs Certification - Regulatory Affairs Professionals Society, 2025 Medical Expert Board Member - Eat This, Not That!, 2021– Medical Expert Board Member - Eat This, Not That!, 2021– Title: Individuals' Perceptions of the Efficacy, Quality, and Safety of Care Accessed via a Telemedicine Platform: A Retrospective Analysis of Survey Data Published in: Telemedicine Journal and E-Health Date: 2026 URL: Title: Individuals' Perceptions of the Efficacy, Quality, and Safety of Care Accessed via a Telemedicine Platform: A Retrospective Analysis of Survey Data Published in: Telemedicine Journal and E-Health Published in: Telemedicine Journal and E-Health Title: Biomechanical evaluation of a novel suturing scheme for grafting load-bearing collagen scaffolds for rotator cuff repair Published in: Clinical Biomechanics Date: 2015 URL: Title: Biomechanical evaluation of a novel suturing scheme for grafting load-bearing collagen scaffolds for rotator cuff repair Title: Pelvic incidence and acetabular version in slipped capital femoral epiphysis Published in: Journal of Pediatric Orthopaedics Date: 2015 Title: Pelvic incidence and acetabular version in slipped capital femoral epiphysis Title: Relationship between pelvic incidence and osteoarthritis of the hip Published in: Bone & Joint Research Date: 2016 URL: Title: Relationship between pelvic incidence and osteoarthritis of the hip Title: Effects of PDGF-BB delivery from heparinized collagen sutures on the healing of lacerated chicken flexor tendon in vivo Published in: Acta Biomaterialia Date: 2017 URL: Title: Effects of PDGF-BB delivery from heparinized collagen sutures on the healing of lacerated chicken flexor tendon in vivo Dr. Bohl’s medical expertise is regularly featured in consumer health media: Eat This, Not That! : Contributor and Medical Expert Board Member on nutrition and wellness topics The Dr. Oz Show: Behind-the-scenes contributor to Emmy Award-winning health segments Sharecare: Public-facing health writer, simplifying complex medical issues for millions of readers Dr.