The effects of taking 100 mg of Viagra can last for up to 4 hours after taking the drug. However, the strength of these effects is weaker at 4 hours than 2 hours after taking Viagra. As the concentration of Viagra in the blood typically peaks 60 minutes after taking the drug, the effects are strongest around this time.
Sildenafil tablets for erectile dysfunction come in different strengths ranging from 25mg to 100mg. The usual dose is 50mg, when you need it. Do not take it more than once a day. The dose can be increased to 100mg or decreased to 25mg depending on its effect.
Never take more than 100 mg of Viagra in a 24-hour period. Too much Viagra can cause severe headache, low blood pressure, and orthostasis (drop in blood pressure when standing) that can lead to fainting. Higher doses can also cause priapism, a painful erection that lasts longer than 4 hours.
This medicine usually begins to work for erectile dysfunction within 30 minutes after taking it. It continues to work for up to 4 hours, although its action is usually less after 2 hours.
How quickly does Viagra work? After taking Viagra, the medication quickly enters your system and starts working after about an hour, but you can take it anywhere from 30 minutes to 4 hours before sexual activity.
Unfortunately, that's one of many dangerous logical fallacies when it comes to ED medications: taking two pills isn't going to make your erection twice as hard, or twice as large — it's just going to cause your risk of adverse effects to double.
The highest recommended Viagra dose for treating erectile dysfunction (ED) is 100 mg per day, according to the drug's manufacturer. Doses of 150 mg or 200 mg would be considered off-label use.
Viagra will not make you come or prevent premature ejaculation. Viagra is primarily an erectile dysfunction medication and does not directly impact time to ejaculation. Can Viagra be used to cure premature ejaculation? Viagra is not usually prescribed to treat premature ejaculation.
Typically, an average erection may last from a few minutes to roughly half an hour. However, this can vary significantly due to the many factors that can affect erection duration. It is also worth noting that a person does not need an erection to achieve orgasm.
Sildenafil (brand name Viagra, or affectionately nicknamed “the little blue pill”; see Important Safety Information) is a highly effective medication to treat erectile dysfunction. However, there is something it can't do. Viagra does not make your penis bigger. No pill does.
Conclusion: Men with erectile dysfunction treated with 100-mg compared with 50-mg sildenafil may be more likely to achieve a greater improvement in erectile function and, within the first 2 weeks, completely hard and fully rigid erections, with little or no greater risk to tolerability.
Speak with your healthcare provider about a different dose
If Viagra isn't working for you, you might need a higher dose. But don't experiment on your own: Always speak with a healthcare provider about dosage changes and never take more than one dose of Viagra in any 24 hour period.
Alcohol (Ethanol) sildenafil
You may be more likely to experience symptoms such as dizziness, lightheadedness, fainting, flushing, headache, and heart palpitations. You should avoid or limit the use of alcohol while being treated with sildenafil, and use caution when getting up from a sitting or lying position.
In healthy volunteers, sildenafil doses are absorbed rapidly, with maximum plasma concentrations achieved within a median time of 1 h (range, 0.5–2 h) after dosing [3].
Take Viagra 30-60 Minutes Before Sex
The precise amount of time required for Viagra or generic sildenafil to start taking action varies based on a variety of factors, from your diet to your personal drug metabolism.
If you're able to stop from expelling semen during sex you may be able to experience a “dry orgasm” and continue to stay erect. Another technique is called edging. Again, edging requires discipline and some practice to perfect. Basically, pay close attention to your body in the 20 seconds before you ejaculate.
After sex. After orgasm, every man goes through a recovery cycle, called the refractory period, which is when it is not possible to get another erection. This resolution stage can take anything from minutes to days and varies from man to man, generally extending as you get older.
Sildenafil can be prescribed in 20 mg, 40 mg, 60 mg, 80 mg, and 100 mg doses. 100 mg is the maximum dosage available for Viagra and sildenafil for a reason, and your healthcare provider is unlikely to prescribe more than that for you.
Sildenafil has a 4-hour 'half-life', meaning half of the drug has left the bloodstream after 4 hours. Some men may still be able to achieve a satisfactory erection after 10 hours, although the duration will become shorter. After 24 hours all traces of the drug in the bloodstream has practically gone.
The short answer is yes; you can take Viagra or its generic form, sildenafil, every day. Whether you need to or should, depends. Since each person is different, you should consult with a doctor about what's best for you. They can discuss dosage and frequency.
Viagra doesn't start working immediately after taking it, as the medication needs time to be absorbed into your blood. For most men, it takes around 30 minutes before you start to feel the effects of Viagra. 12 minutes after – One study has shown that some men got an erection just 12 minutes after taking Viagra.
Why You're Not Getting All the Way Hard. Erectile dysfunction's mechanism is quite simple, but the underlying cause could be a myriad of reasons, from poor diet and exercise habits, diabetes or heart disease, to low self-esteem, depression or anxiety.