Generally, Viagra lasts around four hours. So it's important you don't take Viagra too long before you want to have sex, for example don't take Viagra in the morning if you expect to have sex at night. It's likely if you leave it that long, the effects of Viagra will have worn off.
Take sildenafil up to 4 hours before you want to have sex. For sildenafil to work properly, you'll need to be sexually excited.
Likewise, if you take Viagra at night, you shouldn't take Cialis or any other PDE5 inhibitor the next morning. Although Viagra is generally only effective for a few hours, it can still linger in your system, so wait at least 24 hours.
Take Viagra 30-60 Minutes Before Sex, Not Earlier
However, make sure not to take your Viagra tablet more than three or four hours before the time you plan to have sex. On average, Viagra lasts for about four hours, after which it may no longer help you maintain an erection.
Viagra works best 30 minutes to four hours after taking the pill. Viagra also works best on an empty stomach. Do not take the pill after a high-fat meal. If you do not achieve an erection with sexual stimulation, you can increase the dosage of your medication the next time sexual activity is planned.
Viagra doesn't stop your erection going down after you ejaculate, so you'll likely lose your erection after you do. If you are having trouble orgasming too early then you may need separate treatment for premature ejaculation. You can get more than one erection while on Viagra.
The concentration of Viagra in the blood peaks around 30–120 minutes after taking the drug — usually around the 60 minute mark. It is possible to start feeling the effects of Viagra at any time during this window. Viagra tablets typically come in 25, 50, or 100 milligram (mg) doses.
How long does Viagra last? The effects of Viagra can last 4 to 8 hours, depending on the individual person and the dose you take. In fact, some people may experience more than one erection during this time.
Low testosterone levels
Viagra cannot replace testosterone levels, so when those levels drop too low, Viagra cannot stimulate enough blood flow into the penis to make up for the drop in hormone levels. That results in Viagra no longer working as well as it should or failing to work at all.
Because 100mg is the highest dose available, you should never 'double up' on tablets or take more than one in 24 hours. Sildenafil 100mg is the highest safe dosage you can take – if it is ineffective, you should try another ED treatment.
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.
Erectile dysfunction (ED) medications that can be cut in half. The most common ED medications can be safely split. This includes: Sildenafil (Viagra)
No pill does. It can help you get and maintain a firmer erection that lasts longer, though. To put it another way, sildenafil and other ED medications make the most of what you've got. They won't magically endow you with more length or girth permanently.
When used in women, Viagra is thought to raise blood flow to the genitals so that there's more sensitivity and stimulation. Studies have shown that Viagra may provide a benefit for women having difficulty with sexual arousal — since it may help them respond better to sexual stimulation.
As discussed above, alcohol can potentially cause or worsen ED. So, if you're taking a medication like Viagra to help you get or maintain an erection, alcohol may be counteracting its effects. In other words, it's best to limit alcohol consumption if you're taking an ED medication — or avoid it altogether.
Pfizer, the company that manufactures this drug, has confirmed that the typical Viagra user is on average 53 years old. The company does not keep records of users younger than 33 years. The drug should not be used in young men who do not have erection problems.
The biggest difference between Viagra and Cialis is the amount of time their effects last. Viagra remains effective for 4 to 6 hours, which offers ample opportunity to have sex on multiple occasions if you wish. However Cialis typically allows you to achieve erections for up to 36 hours after taking a tablet.
A penile erection can normally last anywhere from a few minutes to about half an hour. On average, men have five erections a night while they're sleeping, each lasting about 25 to 35 minutes (Youn, 2017).