How many viagra should i take

A real, U. There have been numerous reports of people who have taken more than the recommended amount of Viagra. This can include seeing flashes of light and experiencing red-tinted and blurred vision caused by damage to the cells in his eyes responsible for color vision Yanoga, The greater the dose, the greater the risk of side effects.

While these issues may go away after you stop taking the medication, some people suffer permanent damage Huang, Vision changes are a common side effect of sildenafil, and they generally resolve within 24 hours at regular doses, but researchers suggest that some people may be more sensitive to sildenafil than others. Vision changes lasting 21 days happened in men taking a standard mg dose of the drug Karaarslan, Ensuring that you can tolerate the medication is one reason healthcare providers will typically start you on a smaller dose and increase the dose according to your needs.

Following their instructions minimizes your risk of adverse effects. You should take the recommended dose of sildenafil your healthcare provider has prescribed and no more. Your healthcare provider will likely start you on a 50 mg dose of the medication to test how well you respond.

Your healthcare provider may increase your dose to mg or decrease it to 25 mg depending on whether you experience side effects. You should take sildenafil at least 30 minutes before sex, but it can be taken up to four hours in advance.

If you took sildenafil 30 minutes before sex or less, its effect may strengthen if you wait. There are also some additional treatments you can try when taking sildenafil to get better results. A dose of 25 mg sildenafil is considered a low dose, and low-dose sildenafil is generally only used in certain circumstances.

If you have kidney or liver medical conditions or are taking certain medications, your healthcare provider may prescribe low-dose sildenafil. Sildenafil is broken down in your liver by a system called CYP3A4.

Some medications affect this system and, as a result, the rate at which your body can break down drugs like sildenafil. This could cause levels of sildenafil to build up in your system, potentially increasing your risk of side effects, even at low doses FDA, One small study looked at people who had previously not responded to this medication. High-dose sildenafil improved erectile dysfunction in just 13 of the 54 participants It only takes 15 to 30 minutes to kick in, depending on the dose.

When it comes to duration, Cialis tadalafil is the longest lasting and works for up to 36 hours. Viagra works by increasing blood flow to the penis so you can get hard enough, long enough to engage in sexual activity. Below are the most common side effects of Viagra. Talk with your doctor if you experience any of these symptoms for an extended period of time:. Stop taking Viagra and call or your local emergency services, or go to the nearest emergency room, if you experience any of these symptoms:.

In some cases, your doctor may recommend trying it over the course of a few weeks or months , depending on your condition. Resist the urge to take Viagra recreationally. Recreational Viagra is a thing, and so is counterfeit Viagra. Both are risky and can lead to a lot bigger and scarier side effects than a raging monster of a hard-on.

A doctor will prescribe the safest and most effective dose based on your health and needs. An online retailer or some dude at the bar, not so much. When taken as prescribed, Viagra can help you get hard so you can engage in sexual activity but do not expect it to do all the work. Take it as directed and make sure to help it along by being sufficiently turned on when you use it. Adrienne Santos-Longhurst is a freelance writer and author who has written extensively on all things health and lifestyle for more than a decade.

When most people think about penis health, they think about sexually transmitted infections and erectile dysfunction. While these conditions can…. Here's how to shop Viagra smartly. Health Conditions Discover Plan Connect. What is the typical Viagra dosage? How often can you take it? It belongs to a group of medications called phosphodiesterase PDE5 inhibitors, which work as vasodilators and cause blood vessels to relax. After taking Viagra, most men will be able to maintain an erection for about two to three hours before the effects start to wear off.

Viagra is not available over-the-counter and must be prescribed by a physician. ED pills can be a bit intimidating the first few times you take it.

Taking too much Viagra at one time, not taking enough, or taking it under the wrong circumstances could potentially cause side effects or for the drug to not work at all. You should check with their doctor before taking it. If your doctor says it okay for you to take Viagra and gives you a prescription, there are some things to keep in mind before taking it for the first time.

Viagra should be taken orally 30 minutes to four hours before sexual activity but is most effective if taken one hour beforehand. Some people may need to take it one hour before sexual activity, whereas others may find that it takes closer to two to three hours to start working for them. The standard dose is 50 mg taken with or without food. Some experts recommend taking Viagra on an empty stomach and certainly not after eating a high-fat meal. However, other researchers have not found a connection between taking Viagra with food and lower efficacy of the drug.

Viagra may not work the first time for everyone. Once it does start to work, you can expect your erection to last anywhere from two to three hours.

Viagra pills are labeled with how much sildenafil citrate they contain: 25 mg, 50 mg, or mg. A doctor may prescribe someone different dosages of Viagra based on whether they will be taking it as needed or daily. The standard dose of Viagra for ED is 50 mg taken as needed, about one hour before sexual activity.

According to manufacturer instructions, patients should take Viagra only once per day on an as-needed basis unless otherwise advised by a doctor.