2 DOSAGE AND ADMINISTRATION

While this is true, a few uses of sildenafil extend beyond improving sexual activity. Besides being sold as Viagra, sildenafil is the active ingredient in Revatio.

Sildenafil Side Effects and Adverse Reactions

It’s most popularly known as the active ingredient in Viagra® and a treatment for ED, but sildenafil is also sold as Revatio®, a medication marketed for treating pulmonary arterial hypertension. Depending on your health needs, your dosage of Viagra might be 25 milligrams (mg), 50 sildenafil 100 mg tab mg, or 100 mg. While sildenafil 20 mg tablets do exist, they’re FDA-approved for pulmonary arterial hypertension, not ED. Keep reading to find out if a sildenafil 20 mg dosage for erectile dysfunction exists, the most common sildenafil dosages, potential side effects, and more. Most people assume they know what Viagra does — it causes erections, right? As we mentioned above, this brand-name drug is approved by the U.S. Food and Drug Administration (FDA) for treating pulmonary hypertension, a type of high blood pressure affecting arteries in the lungs and the right side of the heart. Revatio can prevent this condition from worsening. Sildenafil may also be used off-label to treat: Raynaud phenomenon (narrowing blood vessels in extremities such as fingers and toes) Raynaud phenomenon (narrowing blood vessels in extremities such as fingers and toes) Sildenafil has a variety of uses because it’s a phosphodiesterase type 5 (PDE5) inhibitor. PDE5 inhibitors are medications that improve blood flow to certain tissues by widening the blood vessels.

Product	Dosage	Quantity + Bonus	Price
Viagra Generic	100mg	10 Pills	28.91€ 27.53€	Buy
Kamagra Soft Tabs	100mg	120 + 6 Pills	311.78€ 296.93€	Buy
Viagra Generic	200mg	270 + 10 Pills	379.76€ 361.68€	Buy
Kamagra Polo	100mg	12 Pills	60.21€ 57.34€	Buy
Kamagra Oral Jelly	100mg	90 + 8 Sachets	303.56€ 289.10€	Buy
Kamagra Oral Jelly	100mg	110 + 9 Sachets	334.87€ 318.92€	Buy
Kamagra Soft Tabs	100mg	12 Pills	57.55€ 54.81€	Buy
Kamagra Soft Tabs	100mg	60 + 4 Pills	180.59€ 171.99€	Buy
Viagra Generic	50mg	360 + 10 Pills	225.33€ 214.60€	Buy
Viagra Generic	150mg	90 + 6 Pills	147.18€ 140.17€	Buy
Kamagra Polo	100mg	20 Pills	83.56€ 79.58€	Buy
Viagra Generic	100mg	360 + 10 Pills	330.21€ 314.49€	Buy

They’re best known for increasing blood flow to the penis, allowing for erections upon sexual stimulation. At the moment, 20 mg Viagra does not exist — but you can get Revatio in a 20 mg tablet, and it can be prescribed off-label for ED. In the same way that you can get generic Viagra as a 25 mg sildenafil tablet, you can also get generic Revatio as a 20 mg sildenafil tablet. It may be marked as a c89 pill or described as generic Viagra because these drugs both contain sildenafil. The only chemical difference is the dosage. If you’re taking a 20 mg generic Viagra white pill, chances are you’re actually taking generic Revatio.

Parameter	Values	Notes
Absorption	Rapid	Peak plasma levels in approximately 30-60 min
Bioavailability	Approximately 40%	Due to first-pass metabolism
Half-life	About 4-5 hours	Duration of action may vary
Metabolism	Liver via CYP3A4 and CYP2C9	Major pathways

Viagra is available in dosages of 25 mg, 50 mg, and 100 mg. Currently, 100 mg sildenafil is the highest dosage approved by the FDA. Revatio is available in 20 mg tablets. There’s no one-size-fits-all solution when it comes to the ideal sildenafil dosage. Your dosage will depend on your health needs and the reason you’re taking the medication.

• Sildenafil 12.5 mg may be prescribed for pulmonary hypertension as well.
• Dose adjustments may be necessary based on age or medical history.
• Regular medical checkups help monitor treatment effects.

You might assume a higher dosage of sildenafil leads to a firmer erection or better sex, but this isn’t always the case. In fact, taking too much sildenafil can lead to some serious side effects, like a sudden decrease in blood pressure. It’s best to stick with your prescribed dosage and follow the patient information leaflet your healthcare provider gives you. If you find that a particular dose isn’t working as well as you had hoped, make another appointment with your provider and ask if you can revisit your dosage or explore other treatment options. To get the best results from Viagra, it’s important to take the right dosage. As mentioned, 20 mg sildenafil is FDA-approved for pulmonary arterial hypertension, not erectile dysfunction.

What is sildenafil?

Do you know these 11 amazing facts about Viagra? Is generic Viagra available in the U.S.? Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances. Our friendly customer care team is standing by for support. This content is intended for counseling purposes only.

Authors and Affiliations

This content is informational/educational and is not intended to treat or diagnose any disease or patient. No claims are made as to the safety or efficacy of mentioned preparations. The compounded medications featured in this content have been prescribed and/or administered by prescribers who work with Wedgewood Pharmacy. You are encouraged to speak with your prescriber as to the appropriate use of any medication. Wedgewood Pharmacy's compounded veterinary preparations are not intended for use in food and food-producing animals.

Corresponding author

All product and company names are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them. Be ready for sex whenever you're in the mood When it comes to penises, size isn’t everything. But when it comes to erectile dysfunction (ED) medications, dose size can make a difference. Sildenafil citrate is a generic drug found in several types of prescription meds. If you take a 20 mg dose of sildenafil, it might improve your erections, but it might not. Although Viagra can come in as small a dose as 25 mg, the 50 mg tablets are usually the starting dosage. If you experience uncomfortable side effects, your dosage could decrease to 25 mg. Patients older than 65 and those with kidney or liver problems may start on a 25 mg dose.

2.1 Recommended Dosage in Adults

Shake the oral suspension (liquid) before you measure a dose. Use the dosing syringe provided, or use a medicine dose-measuring device (not a kitchen spoon). When sildenafil is used for ED, it is used as needed, so you are not likely to miss a dose. If you are taking sildenafil for PAH and you miss a dose, take the medicine as soon as you can, but skip the missed dose if it is almost time for your next dose. Do not take two doses at one time.

Is it Safe to Take Sildenafil When Pregnant?

If you take too much sildenafil, call your doctor or go to the nearest hospital emergency room. Drinking alcohol with sildenafil can cause side effects. Grapefruit juice and products may interact with sildenafil, leading to unwanted side effects. Avoid using any other medicines to treat impotence, such as alprostadil or yohimbine, without first talking to your doctor. Tell your healthcare provider about all the medicines you take, including prescription and over-the-countermedicines, vitamins, and herbal supplements.

Ethics approval and consent to participate

Sildenafil may affect the way other medicines work, and other medicines may affect the way sildenafil works, causing side effects. Especially tell your healthcare provider if you take: Nitrates for chest pain or heart problems. This includes nitroglycerin, isosorbide dinitrate, and isosorbide mononitrate. Nitrates are also found in some recreational drugs such as amyl nitrate or nitrite ("poppers"). Taking sildenafil with a nitrate medicine can cause a sudden and serious decrease in blood pressure Alpha-blockers are sometimes prescribed for prostate problems orhigh blood pressure. Viagra is considered an effective treatment for erectile dysfunction, but its efficacy depends on the dosage. In clinical trials, 63 percent of participants who took 25 mg sildenafil reported an improvement in their erections, compared to 74 percent of those who took 50 mg and 82 percent of those who took 100 mg. With that said, other erectile dysfunction treatments — like tadalafil (Cialis®) and vardenafil (Levitra®) — are available in a 20 mg dosage, but these are different medications, so their dosages aren’t directly comparable to sildenafil.

8.1 Pregnancy

In some patients, the use of sildenafil with alpha-blockers can lead to a drop in blood pressure or fainting Other drugs to treat high blood pressure or a prostate disorder Medicines to treat HIV, such as protease inhibitors, such as ritonavir and saquinavir Some types of oral antifungal medicines, such as ketoconazole and itraconazole Some types of antibiotics, such as erythromycin Other medicines that treat high blood pressure Medicines or treatments for ED, such as avanafil (Stendra), tadalafil (Cialis), or vardenafil (Levitra). Tell your doctor about all other medications you use for erectile dysfunction. Ask your healthcare provider or pharmacist for a list of these medicines if you are not sure. Keep a list of them to show to your healthcare provider and pharmacist when you get a new medicine. Other drugs may interact with sildenafil, including prescription and over-the-counter medicines, vitamins, and herbal products.

Sexual Dysfunction (Related to Antidepressant Use)

Not all possible drug interactions are listed here. Store sildenafil tablets and oral film at room temperature, between 20°C and 25°C (68°F and 77°F). Store sildenafil reconstituted oral suspension below 30°C (86°F) or in a refrigerator between 2°C to 8°C (36°F to 46°F). Throw away the reconstituted oral suspension after 60 days. Active ingredient: sildenafil citrateInactive ingredients: dextrose and water for injection.

Raynaud’s Phenomenon (Off-Label Use)

Contains no ingredients made from gluten-containing grain (eg, wheat, barley, or rye). Revatio is distributed by Pfizer Labs, Division of Pfizer Inc., NY, NY 10017. Viagra is distributed by Pfizer Labs, Division of Pfizer Inc., NY, NY 10017. It is distributed by: IBSA Pharma Inc, Parsippany, NJ 07054 USA. Cialis vs Viagra - What's the difference between them? Whether you’re experiencing poor erectile function or have a cardiovascular condition, sildenafil can drastically improve your symptoms. The medication is generally safe, and research suggests it won’t cause any long-term health issues. But that doesn’t mean it’s completely without risks or side effects. If you experience priapism (a prolonged, painful erection) or any other serious adverse effects — like shortness of breath, irregular heartbeat, or loss of vision — seek emergency medical attention.

• Common side effects include headaches, flushing, and nasal congestion.
• Rarely can cause vision changes, such as blurred vision or color tinge.
• Serious side effects require immediate medical attention.

Sildenafil might also be dangerous for people with a history of certain medical conditions, including: Allergic reactions to Viagra or any PDE5 inhibitor Allergic reactions to Viagra or any PDE5 inhibitor Blood problems like hemophilia, leukemia, or sickle cell anemia Blood problems like hemophilia, leukemia, or sickle cell anemia Conditions affecting penis shape, like Peyronie’s disease or a curved penis Conditions affecting penis shape, like Peyronie’s disease or a curved penis Eye problems, such as retinitis pigmentosa, vision loss, or NAION (non-arteritic anterior ischemic optic neuropathy) Eye problems, such as retinitis pigmentosa, vision loss, or NAION (non-arteritic anterior ischemic optic neuropathy) Heart problems (e.g., having had a heart attack or stroke) Heart problems (e.g., having had a heart attack or stroke) There are a few sildenafil drug interactions you need to look out for, too.