Sildenafil Oral
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| Dosage | Recommended Use | Onset of Action | Duration of Effect | Typical Frequency |
|---|---|---|---|---|
| 10 mg | Mild to moderate ED cases | 30-60 minutes | Up to 4-6 hours | Once per day, as needed |
| 20 mg | Moderate to severe ED | 30-60 minutes | Up to 4-6 hours | Once per day, as needed |
| 5 mg | For elderly or sensitive users | 30-60 minutes | Up to 4 hours | Once per day, as needed |
We rely on peer-reviewed studies, academic research institutions, and medical associations. We strive to use primary sources and refrain from using tertiary references.
| Parameter | Value | Notes |
|---|---|---|
| Absorption Rate | Rapid | Peak plasma levels in ~60 minutes |
| Bioavailability | Approximately 40% | Due to first-pass metabolism |
| Half-life | About 4 hours | Time to reduce plasma concentration by half |
| Metabolism | Liver (primarily via CYP3A4) | Enzymatic breakdown |
| Excretion | Mainly feces (~80%) | Some via urine (~13%) |
Dr. Kelly Brown is a board certified Urologist and fellowship trained in Andrology.
8.4 Pediatric Use
But if you have severe or persistent ED, your healthcare provider might prescribe sildenafil at a higher dosage. Find the right dosage for you, and take what you need — nothing more, nothing less. For most people, sildenafil is safe and effective, but that doesn’t mean it’s perfect. And like Superman around kryptonite, many negative effects you might experience from sildenafil can be dose-dependent. Luckily, most potential adverse effects of sildenafil are mild and resolve on their own over time.
Special Populations
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. 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. She is an accomplished men’s health expert with a robust background in healthcare innovation, clinical medicine, and academic research.
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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.
- Reduced dosage like 10mg is suitable for sensitive individuals.
- Common side effects include headaches and flushing.
- Sildenafil should not be taken with nitrate medications.
- Avoid heavy meals before taking sildenafil for quicker action.
- The effects of 10mg can last up to 4-6 hours.
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.
8.1 Pregnancy
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. Prescription drugs for ED are safe and FDA-approved.
Sildenafil Tablets for ED
Sildenafil is one of several medications for improving blood flow and making sildenafil 20 mg prescription 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. Onset and duration of action of sildenafil for the treatment of erectile dysfunction. 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. 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.
What is sildenafil (Viagra®)?
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. Some party drugs — such as poppers — contain ingredients like nitrites, which can cause potentially dangerous effects when used with PDE5 inhibitors.
Endothelial friendly
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. 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. Brown then completed her Andrology Fellowship at Medical College of Wisconsin, furthering her expertise in male fertility, microsurgery, and sexual function. Her dedication to 150mg sildenafil for sale caring for patients with compassion, understanding, as well as a unique ability to make guys instantly comfortable discussing anything from sex to sperm makes her a renowned clinician. 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. She lives in Denver with her husband, two children, and beloved Bernese Mountain Dog.
| Condition | Risk Factors | Recommendations |
|---|---|---|
| Use with nitrates | Severe hypotension, risk of significant blood pressure drop | Avoid combining, consult healthcare provider |
| Severe cardiovascular disease | Risk of adverse cardiovascular events | Use only under medical supervision |
| Liver impairment | Altered metabolism, increased side effects | Dose adjustment or avoid use |
| Retinitis pigmentosa | Potential for increased visual side effects | Use with caution, consult ophthalmologist |
You can find Dr. Brown on LinkedIn for more information. Urology Residency, University of California San Francisco Urology Residency, University of California San Francisco Northwestern University Feinberg School of MedicineB.S. 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.
- The medication can be part of a treatment plan for ED.
- Do not share sildenafil with others, even if they have similar symptoms.
- Taking sildenafil on an empty stomach may increase effectiveness.
- Be aware of possible allergic reactions, such as rash.
- Follow-up with your healthcare provider regularly when using sildenafil.
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.
- Erectile dysfunction can be caused by various medical conditions; discuss treatment options with a doctor.
- The medication is generally well-tolerated but requires medical supervision.
- Side effects can include indigestion, muscle aches, or flushing.
- Avoid using sildenafil if you are pregnant or breastfeeding.
- Proper dosage and timing maximize the benefits of sildenafil 10mg.
Regret Regarding Fertility Preservation Decisions Among Male Cancer Patients. The Journal of Urology, 201(Supplement 4), e680-e681. Feasibility Study of Video Telehealth Clinic Visits in Urology.
5.4 Visual Loss
Also, tell your provider if you have sickle cell anemia, leukemia, a sexually transmitted infection (STI), or — just saying this to be sildenafil citrate drug 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 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. Here’s the bottom line on sildenafil dosages: It’s not just going to give you a four-hour tent pole.
Other Medical Problems
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. The most common starting dose is 50mg. The Journal of Urology, 201(Supplement 4), e545-e545. Erectile dysfunction is a condition in which you have trouble getting or keeping an erection firm enough for satisfying sex. Erectile dysfunction affects as many as 30 million men in the United States.
Sildenafil for ED
These are often generic versions of Revatio. Let’s get something straight, fellas: The dose of sildenafil you use isn’t a measure of manhood — and a higher dosage won’t necessarily produce better effects. There’s no “ideal” dosage of sildenafil for everyone. That said, 50mg has shown proven benefits for most men in clinical trials. For example, a series of two studies looked at the effects of 50mg sildenafil in men with erectile dysfunction.
How does sildenafil work (mechanism of action)?
After taking this dosage, 71 percent of participants got an erection in 30 minutes or less. After 45 minutes, 82 percent achieved an erection. You may not want to take 50mg if you experience significant side effects like vision changes, nausea, or painful erections. If you notice side effects from sildenafil at a dosage of 50mg or 100mg, your healthcare provider may suggest going down to 25mg. If you only have mild ED, you may find that a low dosage is more than enough to improve your symptoms and help you have sex without worrying about getting or maintaining an erection. Premature ejaculation (PE) is a sexual dysfunction characterized by a short ejaculatory latency, a perceived lack of control about the timing of ejaculation, and distress and interpersonal difficulty related to ejaculating too quickly.