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  1. Aug 22, 2024 · It takes from 30 minutes to 1 hour for Viagra (sildenafil) to start working, and the effects will last for about 4 hours. It is used to treat erectile dysfunction. Hardness and duration of erections increase with increased dose. Viagra is given as an oral pill, so it has to be absorbed from your stomach to get into your blood and reach your penis.

    • How Does Viagra Work?
    • How Long Does Viagra Take to Start working?
    • How Long Does Viagra Last?
    • How Long Does It Take For Viagra to Leave The System?
    • Viagra Side Effects
    • Alternatives to Viagra
    • Summary

    An erection occurs when a series of chemical processes (triggered by sexual arousal or the manual stimulation of the penis) cause the engorgement of the penis with blood. Erectile dysfunction occurs when parts of the system that contribute to erections (including nerves and vascular valves) fail, often in tandem with advancing age. Viagra contains ...

    Viagra takes about an hour to work, although some males are able to achieve an erection within 30 minutes of a dose. Viagra reaches its maximum concentration in the bloodstream within one to two hours. This is the time frame during which Viagra exerts its optimal effects. After two to three hours, the effects start to diminish. Viagra does not work...

    Viagra usually lasts for around four hours, although the effect may be longer lasting in some people. Even so, try not to take Viagra more than four hours before sexual activity just to be safe. There are several reasons why Viagra may be longer lasting in some people: 1. Certain drugs are pharmacokinetic enhancers that boost the level of certain d...

    Viagra has a drug half-lifeof four hours. This means that 50% of the drug will be cleared from your system after four hours. Thereafter, the concentration of the drug will continue to drop by half every few hours until no drug is left in the system—usually within 16 to 24 hours. This does not mean that Viagra will work for 16 to 20 hours. While the...

    As with all drugs, Viagra can cause side effects. The side effects tend to be relatively mild, although some people may experience them more profoundly than others. Common side effects of Viagra include: 1. Headache 2. Flushing 3. Stuffy nose 4. Indigestion 5. Dizziness 6. Nausea 7. Blueish vision An uncommon but potentially serious side effect is ...

    PDE-5 inhibitors are the most common drugs used to treat erectile dysfunction. Viagra was the first PDE-5 inhibitor introduced in 1998, but there are others you can turn to. Among them: 1. Levitra (vardenafil) is similar to Viagra and may last up to five hours. 2. Cialis (tadalafil)is a longer-lasting PDE-5 inhibitor that enables erections up to 36...

    Viagra is a PDE-5 inhibitor taken by mouth that can help you get an erection if you have erectile dysfunction. It tends to work within one hour and lasts for up to four. Taking Viagra with alcohol or a high-fat meal can reduce its effectiveness. Common side effects include headache, flushing, indigestion, blue vision, and stuffy nose.

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    • How it works. Sildenafil may be used to treat erectile dysfunction (ED or impotence) in men (Viagra brand) or pulmonary arterial hypertension in both men and women (Revatio brand), depending on the brand.
    • Upsides. Sildenafil (Viagra brand) increases blood flow to the penis following sexual stimulation. It does this by blocking the enzyme responsible for the breakdown of cGMP.
    • Downsides. If you are between the ages of 18 and 60, take no other medication or have no other medical conditions, side effects you are more likely to experience include
    • Bottom Line. Sildenafil is used to treat erectile dysfunction (ED) and to reduce blood pressure in pulmonary arterial hypertension (PAH). It is taken when needed for ED and daily for PAH.
  2. Sildenafil belongs to a group of medicines called phosphodiesterase 5 (PDE5) inhibitors. It works if you have erection problems by temporarily increasing blood flow to your penis when you get sexually excited. It works in pulmonary hypertension by relaxing blood vessels in your chest.

  3. About sildenafil (Viagra) Sildenafil is a medicine used to treat erection problems (erectile dysfunction). Sildenafil is also sometimes used to treat pulmonary hypertension (high blood pressure in the blood vessels that supply the lungs). If you have erection problems sildenafil works by temporarily increasing blood flow to your penis when you ...

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  5. How long does Viagra last for? Viagra can improve erections for up to 4 to 6 hours after it’s taken. Levels of Viagra are highest in your body 30 to 120 minutes after you take a dose. Viagra lasts a maximum of 12 hours, but it won’t last this long for everyone. After 3 to 5 hours there is only half of maximum amount of Viagra left in your body.

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