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Contact your doctor if you experience these side effects and they are severe or bothersome. Your pharmacist may be able to advise you on managing side effects.

dizziness flushing (warm or burning feeling, usually in the face) headache indigestion stuffy nose. Although most of the side effects listed below don't happen very often, they could lead to serious problems if you do not seek medical attention. Check with your doctor as soon as possible if any of the following side effects occur: abnormal vision (e.g., decreased vision, blurry vision, increased sensitivity to light, changes in the ability to tell the difference between blue and green) decrease or loss of hearing temporary memory loss. Stop taking the medication and seek immediate medical attention if any of the following occur: an erection that lasts longer than 4 hours (this could permanently damage your penis) a partial or complete loss of vision chest pains, an irregular heartbeat, or shortness of breath when starting sexual activity (if you have a heart condition) signs of an allergic reaction (e.g., rash; itching; shortness of breath; swollen face, lips, or throat) Some people may experience side effects other than those listed. Check with your doctor pfizer buy online if you notice any symptom that worries sildenafil tablet buy online you while you are taking this medication.

Are there any other precautions or warnings for this medication? Before you begin using a medication, be sure to inform your doctor of any medical conditions or allergies you may have, any medications you are taking, whether you are pregnant or breast-feeding, and any other significant facts about your health. These factors may affect how you should use this medication.

Alcohol: Consumption of alcohol in large amounts may decrease the ability to get an erection and may also temporarily decrease blood pressure, causing dizziness and fainting.

Blood pressure: Tell your doctor if you are taking medications to treat high blood pressure, as the combination of these medications with vardenafil may add to the blood pressure-lowering effect of these medications. If you have low blood pressure, discuss with your doctor how this medication may affect your medical condition, how your medical condition may affect the dosing and effectiveness of this medication, and whether any special monitoring is needed.

Grapefruit juice: Grapefruit juice can increase the amount of vardenafil in your bloodstream.

Do not drink grapefruit juice when

taking

Liver function: Liver disease or reduced liver function may cause this medication to build up in the body, causing side effects. If you have liver problems, discuss with your doctor how this medication may affect your medical condition, how your medical condition may affect the dosing and effectiveness of this medication, and whether any special monitoring is needed. Nitrate-containing medications: Vardenafil should never be taken with any medications that contain nitrates.

Blood pressure may drop to life-threatening levels if vardenafil is taken with any nitrate-containing medication (e.g., nitroglycerin tablets, spray, or patches) or any other nitrates (e.g., isosorbide dinitrate or amyl nitrite "poppers"). Dizziness, fainting spells, heart attack, or stroke may be experienced. If use of a nitrate-containing medication is considered medically necessary, a nitrate may only be taken at least 48 hours after the last dose of vardenafil, and only under close medical supervision. Penis deformation: As with other medications for erectile dysfunction, if you have an anatomical deformation of the penis such as angulation, cavernosal fibrosis, or Peyronie's disease, you should be closely monitored by your doctors if you take this medication.

Prolonged erection: If an erection lasts longer than 4 hours (a rare occurrence), seek immediate medical assistance.

If this condition is not treated quickly, tissue damage and permanent loss of the ability to have an erection could result.

Tell your doctor if you have any of the following conditions as they may increase your risk of a prolonged erection: sickle cell anemia, multiple myeloma, or leukemia. Prostate problems: Tell your doctor if you are taking medications such as alpha blockers (e.g., doxazosin) to treat

prostate

This rare condition is more likely to occur if you have heart disease, high blood pressure, high cholesterol, diabetes, or eye problems, or are over 50 years old or smoke. Vardenafil should not be used by anyone with non-arteritic anterior ischemic optic neuropathy (NAION) or retinosa pigmentosa. Pregnancy and breast-feeding: Vardenafil is not intended for use by women.

Children: Vardenafil is not intended for use by children or adolescents under 18 years of age. Seniors: People over the age of 65 years may require lower doses of this medication.

What other drugs could interact with this medication?

There may be an interaction between vardenafil and any of the following: Grapefruit juice may increase the amounts of vardenafil in the blood.

Only take vardenafil with other medications if prescribed by your doctor.

If you are taking any of these medications, speak with your doctor or pharmacist .

Depending on your specific circumstances, your doctor may want you to: stop taking one of the medications, change one of the medications to another, change how you are taking one or both of the medications, or leave everything as is. An interaction between two medications does not always mean that you must stop taking one of them. Speak to your doctor about how any drug interactions are being managed or should be managed.

Medications other than those listed above may interact with this medication.

Tell your doctor or prescriber about all prescription, over-the-counter (non-prescription), and herbal medications that you are taking. Since caffeine, alcohol, nicotine from cigarettes, and street drugs can affect the action of many medications, you should let your prescriber know if you use them. Levitra Vs Viagra: Finding The Best ED Treatment For You.

Andy is a

co-founder

Here’s what you need to know about the difference between Sildenafil and Vardenafil: Vardenafil (Levitra) helps men: Achieve an erection within 30 minutes Provides an erection for up to 5 hours.

Sildenafil (Viagra) helps men: Achieve an erection within 30-60 minutes Provides an erection for up to 4 hours.

As you can see, there is very little to choose between Levitra and Viagra in terms of effectiveness. Levitra, on average, works a little quicker and provides an erection that lasts a little longer.

It’s also important to note that both only work when you are sexually aroused, meaning you

need

To learn more about Vardenafil, read our dedicated guide for a comprehensive overview page: What is Levitra?. One of the main differences between Levitra and Viagra is the effectiveness of the two medications when ingested with food. Food delays the absorption of all medication in the system.

If you eat a large or fatty meal before taking Viagra, the effects are likely to be significantly reduced. Levitra, on the other hand, is typically less affected by food. The one main exception is grapefruit, which has been proven to significantly reduce the effect of the medication. An alternative to both Levitra and Viagra is Cialis, which does not contain either Vardenafil or Sildenafil. Instead, it contains a different active ingredient called Tadalafil.

By increasing blood flow to the penis, it works in a similar way to both Levitra and Viagra.

However, Cialis helps men: Achieve an erection within 30 minutes Maintain an erection for up to 36 hours. The main difference is that Cialis stays in your system for much longer than both Levitra and Viagra, therefore helping men to achieve an erection for longer. Levitra dosages and Cialis dosages available

are

doses

When taking Cialis Daily, you don’t need to take a pill 30 minutes or an hour before sex.

Instead, you keep your body topped up with the medication on a permanent basis, meaning you should be able to achieve an erection whenever you want to engage in sexual activity and without the need to plan ahead.

Compared to Levitra, Cialis Daily is only available in smaller packets of 2.5mg and 5mg tablets. Below you will find a table comparing Levitra, Viagra, and Cialis by price, dosages, how long it takes to work, and more. Disfuncao eretil: tratamento com drogas inibidoras da fosfodiesterase tipo 5.

Descricao do metodo de coleta de evidencia: Feita revisao bibliografica no Pubmed com o MESH: " impotence " [MeSH] and (" sildenafil " [substance name] or " vardenafil " [substance name] or " tadalafil " [substance name]) and " prognosis " [MeSH].

Foi tambem revisado o Journal of Sexual Medicine , publicacao nao indexada. Graus de recomendacao e forca de evidencia: A: Estudos experimentais ou observacionais de melhor consistencia.

B: Estudos experimentais ou observacionais de menor consistencia. D : Opiniao desprovida de avaliacao critica, baseada em consensos, estudos fisiologicos ou modelos animais. Disfuncao eretil (DE) e a incapacidade recorrente e persistente em ter e/ou manter uma erecao peniana para uma relacao sexual satisfatoria 1 ( B ). E uma entidade clinica de grande prevalencia e o tratamento oral e considerado o de primeira linha. Os inibidores da fosfodiesterase tipo 5 (iF5) constituem hoje a terapia oral mais utilizada 2 ( D ) e atuam promovendo o relaxamento da celula muscular do tecido cavernoso, condicao necessaria para obtencao da erecao. Os iF5 devem ser utilizados sob demanda e na presenca de desejo e estimulo sexual. No Brasil, a sildenafila existe nas dosagens de 25, 50 e 100 mg; a vardenafila nas dosagens de 5, 10 e 20 mg e a tadalafila na dose de 20 mg.

Os respectivos dados farmacocineticos encontram-se na Tabela 1* 3 ( A ) 4-6 ( B ) 7 ( D ). A sildenafila atinge concentracoes plasmaticas maximas (Tmax) em ate uma hora e tem uma meia-vida (T1/2) de tres a cinco horas 4 ( B ).

Clinicamente, isto se reflete em inicio de acao da atividade eretil a partir de 12 minutos, podendo ter efeito por ate 12 horas 5 ( B ).

A vardenafila tem Tmax proxima de 40 minutos e meia-vida em torno de quatro horas 7 ( D ). Clinicamente, isto tambem se reflete em inicio de acao da atividade eretil a partir de 15 minutos, podendo ter efeito por ate 12 horas 6 ( B ). A tadalafila tem Tmax de duas horas (30 minutos a 4 horas) e uma meia-vida de, aproximadamente, 17,5 horas, podendo ter efeito por ate 24 a 36 horas apos a administracao do medicamento 3 ( A ). *A Tabela 1 esta disponivel na diretriz, versao completa, acessivel em www.projetodiretrizes.org.br. Estudos clinicos mostraram eficacia estatisticamente superior ao placebo, dose-dependente, em homens com DE em populacao nao selecionada e nas seguintes subpopulacoes: de causa psicologica 8 ( A ); com diabetes tipo I e II 8 ( A ); pos-lesao medular 8 ( A ); com doencas cardiovasculares 8 ( A ); apos prostatectomia radical 8 ( A ); com depressao leve nao tratada 8 ( A ); com mal de Parkinson 9 ( B ); pos-transplante renal 10 ( pfizer buy online B ); pos-braquiterapia e radioterapia 11 ( B ); com insuficiencia renal em vigencia de dialise 12 ( A ). Estudos clinicos mostraram eficacia estatisticamente superior ao placebo, dose-dependente, em homens com DE em populacao nao selecionada 13 ( B ) e nas seguintes subpopulacoes: de causa psicologica 14 ( A ); com dislipidemia 14 ( A ); em uso de anti-hipertensivos 14 ( A ); pos-prostatectomia radical 15 ( A ); com diabete mellitus tipo 1 e 2 16 ( A ).

Estudos clinicos mostraram eficacia estatisticamente superior ao placebo, dose-dependente, em homens com DE em populacao nao selecionada 17 ( A ) e nas seguintes subpopulacoes: de causa psicologica; com diabetes mellitus 18 ( A ); pos-prostatectomia radical. Ate o presente momento, nao existem evidencias de maior eficacia de um desses medicamentos sobre outro.

Os efeitos colaterais costumam ser transitorios e de leve intensidade.

Os mais frequentes sao: cefaleia, rubor facial, epigastralgia e congestao nasal 17,19,20 ( A ) 21 ( B ) 22 ( D ). Dor lombar e mialgia sao mais frequentes com o uso da tadalafila 19 ( A ). Todos os tres medicamentos sao seguros do ponto de vista cardiovascular, nao apresentando efeitos negativos sobre a funcao cardiaca, nem piorando o quadro clinico de pacientes com insuficiencia coronariana estavel 23 ( A ) 24-27 ( B ).

Outrossim, as alteracoes no eletrocardiograma nao foram consideradas significantes 28 ( B ).