Label: SILDENAFIL tablet, film coated

Her dedication to caring for patients with compassion, understanding, as well as a unique ability to sildenafil gel make guys instantly comfortable discussing anything from sex to sperm makes her a renowned clinician.

• Consult your doctor if you experience vision changes or ringing in ears.
• Sildenafil can interact with nitrates, causing dangerous hypotension.
• Use with caution if you have heart problems or low blood pressure.
• Report any persistent or painful erections lasting over 4 hours.

In addition, her passion for innovation in healthcare combined with her business acumen makes her a formidable leader in the field of men’s health. Dr. Brown is an avid adventurer; summiting Mount Kilimanjaro in Tanzania (twice!) and hiking the incredible Torres del Paine Trek in Patagonia, Chile. She deeply appreciates new challenges and diverse cultures on her travels.

Patient Group	Recommended Starting Dose	Max Dose	Timing	Special Considerations
Adult Men for ED	25 mg, 1 hour before use	50 mg	1 hour before sexual activity	Do not exceed once daily
Patients with Liver Disease	25 mg, after medical consultation	25 mg	Adjusted as per doctor	Monitor for side effects
Elderly Patients	25 mg, as per physician's advice	25 mg	Take with food or without	Increased sensitivity possible

She lives in Denver with her husband, two children, and beloved Bernese Mountain Dog. You can find Dr. Brown on LinkedIn for more information.

12.1 Mechanism of Action

Some party drugs — such as poppers — contain ingredients like nitrites, which can cause potentially dangerous effects when used with PDE5 inhibitors. Sildenafil citrate and other PDE5 inhibitors like Cialis® (tadalafil) and Levitra® (vardenafil) all have negative interactions with medications like itraconazole, ketoconazole, and, oddly enough, grapefruit juice. These things affect the CYP3A4 enzyme and may contribute to higher levels of sildenafil in the bloodstream, potentially increasing the risk of side effects. Make sure to tell your healthcare provider if you’re on any of these — a bad mixture could lead to low blood pressure that may actually be fatal. If you take them together by accident, seek medical attention right away.

Low blood pressure

It’s also important to inform your provider about any underlying health issues or if you’ve previously had heart problems, such as a heart attack, irregular heartbeat, angina (chest pain), or narrowing of your aortic valve. Also, tell your provider if you have sickle cell anemia, leukemia, a sexually transmitted infection (STI), or — just saying this to be safe — are breastfeeding. Our guide to sildenafil interactions goes into greater detail about the risks of using this drug with other medications, as well as steps you can take to lower your interaction risk. Erectile 20mg sildenafil dysfunction is a common problem affecting an estimated 30 million adult men in the United States alone. If you’re one of them, using medication like sildenafil can help you more easily maintain an erection and enjoy a fulfilling, satisfying sex life. Urology Residency, University of California San Francisco Urology Residency, University of California San Francisco Northwestern University Feinberg School of MedicineB.S.

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in Radiologic Science, Chemistry Minor, University of North Carolina at Chapel Hill Northwestern University Feinberg School of MedicineB.S. in Radiologic Science, Chemistry Minor, University of North Carolina at Chapel Hill Cowan, B, Walker, K., Rodgers, K., Agyemang, J. Hormonal Management Improves Semen Analysis Parameters in Men with Abnormal Concentration, Motility, and/or Morphology. Fertility and Sterility, Volume 118, Issue 5, e4. Cowan, B, Walker, K., Rodgers, K., Agyemang, J. Regret Regarding Fertility Preservation Decisions Among Male Cancer Patients.

8.6 Renal Impairment

Dr. Brown was previously Medical Director of a male fertility startup where she lead strategy and design of their digital health platform, an innovative education and telehealth model for delivering expert male fertility care. She completed her undergraduate studies at University of North Carolina at Chapel Hill (go Heels!) with a Bachelor of Science in Radiologic Science and a Minor in Chemistry. She took a position at University of California Los Angeles as a radiologic technologist in the department of Interventional Cardiology, further solidifying her passion for medicine. She also pursued the unique opportunity to lead departmental design and operational development at the Ronald Reagan UCLA Medical Center, sparking her passion for the business of healthcare.

Does sildenafil cause different side effects in females?

Dr. Brown then went on to obtain her doctorate in medicine from the prestigious Northwestern University - Feinberg School of Medicine and Masters in Business Administration from Northwestern University - Kellogg School of Management, with a concentration in Healthcare Management. During her surgical residency in Urology at University of California San Francisco, she utilized her research year to focus on innovations in telemedicine and then served as chief resident with significant contributions to clinical quality improvement. Dr. Brown then completed her Andrology Fellowship at Medical College of Wisconsin, furthering her expertise in male fertility, microsurgery, and sexual function. The Journal of Urology, 201(Supplement 4), e680-e681. Feasibility Study of Video Telehealth Clinic Visits in Urology.

• The medication's effectiveness depends on individual health conditions.
• Preventative measures like healthy diet can enhance results.
• Avoid grapefruit or grapefruit juice while taking sildenafil.
• Always adhere to your healthcare provider’s recommendations.

The Journal of Urology, 201(Supplement 4), e545-e545. RLD / Brand Name: Viagra® Indication: Erectile Dysfunction Click to View Package Insert Click to View Material Data Safety Sheet Viagra® is a registered trademark of Pfizer Inc.

• Sildenafil 25 mg is prescribed for men who need a lower dose option.
• It is manufactured by various pharmaceutical companies globally.
• Ensure the medication is obtained from a legitimate source.
• Always check the expiration date before use.

RLD / Brand Name: Cialis® Indication: Benign Prostatic Hyperplasia and Erectile Dysfunction RLD / Brand Name: Cialis® Indication:Benign Prostatic Hyperplasia and Erectile Dysfunction 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 sildenafil 20 mg prescription treatment for erectile dysfunction. It contains the same active ingredient as branded alternatives.

Before Using

Luckily, most potential adverse effects of sildenafil are mild and resolve on their own over time. As mentioned briefly above, clinical studies show that the risk of side effects from sildenafil increases with dosage. For instance, headaches (the most common side effect of sildenafil) were reported by 16 percent of people at a dosage of 25mg, 21 percent at a dosage of 50mg, and 28 percent at a dosage of 100mg in clinical trials. Other side effects, such as flushing, indigestion, and nasal congestion, also occurred at a higher rate as the dosage of sildenafil increased. Sildenafil can also cause more serious side effects like: Seriously, death — so make sure you use this medication as directed, and seek emergency medical help if you experience any of the side effects above.

The Low Dose: 25mg

Priapism — an erection lasting four hours or longer — sounds great until you realize you can permanently damage the tissue in your penis if you don’t do something about it ASAP. Like most medications, sildenafil can cause interactions when used with other prescription drugs, alcohol, and certain other substances. Sildenafil can potentially cause dangerous drug interactions when combined with medications for heart disease or high blood pressure. Nitrates, alpha-blockers, and calcium channel blockers. When sildenafil is used with these or other medications for hypertension or cardiovascular disease, it can contribute to a sudden decrease in blood pressure that may, in some cases, be life-threatening. 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).

Other uses for this medicine

Prescription drugs for ED are safe and FDA-approved. Sildenafil is one of several medications for improving blood flow and making it easier to get and maintain an erection when sexually aroused. Our guide to erectile dysfunction goes into more detail about what causes ED, as well as what you can do to improve your sexual function. You can also learn more about sildenafil and other ED medications in our guide to the most common erectile dysfunction treatments and drugs. Let a professional worry about your dosage — you just focus on having the best sex of your life.

Pregnancy Categories

Onset and duration of action of sildenafil for the treatment of erectile dysfunction. National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK). Dr. Kelly Brown is a board certified Urologist and fellowship trained in Andrology. She is an accomplished men’s health expert with a robust background in healthcare innovation, clinical medicine, and academic research. “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. Sildenafil has an average rating of 8.3 out of 10 from a total of 509 reviews on Drugs.com. 79% of reviewers reported a positive experience, while 12% reported a negative experience.

What special dietary instructions should I follow?

Here’s the bottom line on sildenafil dosages: It’s not just going to give you a four-hour tent pole. If it does, get to a hospital because it might be priapism. It’s not just going to give you a four-hour tent pole. No single dose of sildenafil works for everyone. Since erectile dysfunction can vary in severity, your healthcare provider will choose your initial sildenafil dose based on your unique health needs.

Dosage Modifications

The most common starting dose is 50mg. Most of the time, your healthcare provider will prescribe sildenafil at a starting dose of 50 mg for use as needed. If the initial dosage you’re prescribed isn’t effective or you experience side effects, let your provider know. It’s common and normal to adjust a sildenafil dosage over time to figure out what’ll give you the best results with as few side effects as possible. Don’t use supplements or other non-prescription pills for the treatment of erectile dysfunction. Sildenafil for Erectile Dysfunction "I am 66 and have been taking Viagra for about 5 years. My wife and I had a great sex life that just seemed to hit a brick wall about five years ago. She didn’t complain but one day we were trying to remember the last time we had sex. During my next doctor appointment I discussed this with my doctor, and he had some blood work done. A few days later, I got a call and my T levels were extremely low, and I was referred to a urologist.