Debunking 5 Viagra Myths (2025)

The little blue pill. Those four words are all that’s required to identify Viagra®, the brand name for a medication used to treat erectile dysfunction (ED).

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The medication, officially known as sildenafil, debuted in 1998. Today, it’s used by millions of people around the world when they want to … well, rise to the occasion during an amorous moment.

Yet myth-based questions continue to follow the little blue pill around. Can Viagra give you a never-ending erection? Is it dangerous? Will it turn you into a Casanova?

Let’s set the record straight with the help of urologistDrogo Montague, MD.

Myth #1: Viagra causes hours-long erections

Odds are you’ve seen a Viagra commercial and heard this warning: Seek immediate medical help for an erection lasting four or more hours.

It’s an attention-grabbing piece of cautionary advice. But the situation that it addresses — a condition known as priapism — is a relatively uncommon side effect of the medication, says Dr. Montague.

A study published in 2020 categorized long-lasting erections from Viagra and other ED medications as a “rare event.” Researchers found 411 cases of drug-induced priapism while reviewing more than two decades worth of data.

But your odds of problematic prolonged erections increase if you combine Viagra with certain penile injection therapies, notes Dr. Montague.

“Combining the treatments has a cumulative effect — penile injection therapy makes your erections hard, and adding Viagra makes them harder and even more long-lasting,” he continues. “So stay on the safe side and don’t pair them.”

Myth #2: Viagra is bad for your heart

Here’s a fun fact for you: Viagra was created to help your heart.

Researchers initially developed Viagra to treat angina, a type of chest pain. Angina occurs when your heart doesn’t get enough oxygen-rich blood and starts working harder to compensate.

Now, Viagra didn’t exactly shine as a treatment for angina … but the stiffer erections the little blue pill caused certainly stood out as a side benefit.

Which brings us back to the question regarding Viagra and your heart.

The erectile dysfunction medication isn’t harmful to your ticker when taken on its own. That’s an important caveat because Viagra should NOT be taken with heart medications that include nitrates.

The reason? Like nitrates, Viagra helps dilate (or expand) blood vessels constricted bycoronary artery disease. Your blood pressure drops when this happens, as less force is needed to pump blood through your system.

The worry if you take both Viagra and nitrates is that your blood pressure could drop too low, a condition known as hypotension. Abnormally low blood pressure increases your risk of a heart attack or stroke.

Bottom line? Talk to your healthcare provider before taking Viagra with other medications.

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Myth #3: Viagra damages your eyes

Taking Viagra to enhance your bedroom performance likely won’t make it more difficult for you to see your partner — unless you overdo it.

High doses of Viagra have been connected to temporary vision issues, reports the American Academy of Ophthalmology. But overall, the medication is considered low risk when it comes to eyesight.

There’s a slight chance, though, that the pill may color your world blue for a bit. Chemicals in Viagra can temporarily change how light hits your eyes, giving everything you see a short-lived blue tint. This reaction is more likely if you take a maximum dose of Viagra (100 milligrams).

“This side effect can happen with higher doses, but it’s uncommon,” says Dr. Montague.

Myth #4: Viagra improves sex drive

Viagra increases blood flow to your penis, which can help you get and maintain an erection for whatever activity you have in mind. But responsibility for the “in mind” part of the process is on you.

The little blue pill isn’t designed to increase libido or sex drive, clarifies Dr. Montague. Basically, think of Viagra as a performance enhancer as opposed to a mood setter.

Myth #5: Viagra is only for older adults

ED is more common with age, but that doesn’t mean it’s not an issue for the younger crowd. Studies show that nearly 40% of men and people assigned male at birth are affected by ED by age 40. It can happen much, much earlier, too.

Talking to your healthcare provider about ED and ED medications also may help you save your penis from injury. The reason? Having sex with an erection that’s barely “hard enough” can bend your penis and tear tissue that may scar while healing.

As scar tissue isn’t elastic like healthy penile tissue, it can force your penis to bend with future erections. That can lead to a condition known asPeyronie’s disease.

Taking Viagra or another ED medication can bring a firmness that prevents the issue.

“If you’re having erectile dysfunction problems, you should feel confident going to your doctor no matter your age,” reassures Dr. Montague. “Many men are embarrassed, but they shouldn’t be. It’s a common issue. Help is available, and it’s worth a try.”

Viagra is approved for use to treat ED after age 18.

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Debunking 5 Viagra Myths (2025)

FAQs

Debunking 5 Viagra Myths? ›

Again, it's important to remember that no matter what treatment you've been prescribed, you should never use Viagra more than once in any 24-hour period and can lead to serious side effects, including dangerously low blood pressure and even priapism, which is an erection lasting four hours or longer that requires ...

Is it safe to take 5 Viagra? ›

Again, it's important to remember that no matter what treatment you've been prescribed, you should never use Viagra more than once in any 24-hour period and can lead to serious side effects, including dangerously low blood pressure and even priapism, which is an erection lasting four hours or longer that requires ...

Does sildenafil make you rock hard? ›

Both brand name Viagra and its generic version sildenafil work by increasing blood flow to your penis. The corpora cavernosa — a pair of sponge-like areas of tissue inside your penis — fill with blood, which causes your penis to expand and harden.

Does Cialis make you harder than Viagra? ›

Cialis has a longer mechanism of action than Viagra, but it will not help people achieve harder erections than they would if they take Viagra.

Do you still stay hard after coming with Viagra? ›

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.

What happens if you take 7 Viagra? ›

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.

Is it OK to take 200 Viagra? ›

Viagra doses 200 mg and up could cause serious side effects. Serious side effects of Viagra include priapism (a painful, prolonged erection), vision loss in one or both eyes, hearing loss and hypotension (low blood pressure). If Viagra doesn't seem to work for you, don't take more than your prescribed dose.

What happens if you take Viagra and fall asleep? ›

Can you sleep with Viagra? The effects of Viagra last one to four hours, depending on factors such as your age, medical condition, and prescribed dose. Studies have shown that if you sleep after taking Viagra, you may experience a significant increase in nighttime erections.

Does sildenafil make you thicker? ›

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.

Why do I go soft with Viagra? ›

If you ate a heavy or high-fat meal before taking Viagra, your erection might come later than expected, be less strong than you expected, or won't last as long as you would've liked. You can try taking the medication on an empty stomach to see how your body responds.

Do most men prefer Viagra or Cialis? ›

Effectiveness of all PDE5 inhibitors is similar; although reported effectiveness of Viagra, at 84% is slightly higher than that of Cialis at 81%. However, more men prefer Cialis because of its longer duration of effect.

Is 20mg Cialis equal to 100mg Viagra? ›

No. Although Cialis and Viagra are both PDE5 inhibitors that boost nitric oxide in your body to help with ED, they're different medications. Cialis comes in a lower dose than Viagra and can be taken daily. Also, the effects of Cialis last longer than the effects of Viagra.

Is 87 cent Viagra legitimate? ›

Friday Plans Makes FDA-Approved ED Medication Available Online for Just 87¢ MIAMI, FL / ACCESSWIRE / August 8, 2023 / Friday Plans, a healthtech startup, is gaining traction in the ED medication industry by offering FDA-approved ED medication for as little as 87 cents per tablet.

How to tell if a man is taking Viagra? ›

Unlike poker, there is no “tell” that reveals a man is taking Viagra. The only way to know a man is taking Viagra is if you see him take the pill, or if he tells you. Now, there may be subtle clues you can pick up on if you've known the man for a while.

What does Viagra do to a girl? ›

In women it's thought that Viagra could increase blood flow to the female genital area, increasing lubrication and aiding orgasm. This theory has led to research into women taking Viagra. Many of these studies have focused on the treatment of FSD.

At what age does a man stop ejaculating? ›

The age at which a male stops ejaculating will be different for each person. However, a person may find that ejaculations decrease in force and volume as they age. It is best for a person to contact their doctor if they have concerns about changes in ejaculation.

What happens if you take 3 Viagra at once? ›

Take your prescribed dosage of Viagra only once a day and no more than once in 24 hours. Exceeding the recommended dosage can increase the risk of side effects like dizziness, headaches, blurred vision, low blood pressure and a condition called priapism (an erection lasting more than four hours).

How many Viagra pills is too much? ›

Dosage and strength for erectile dysfunction

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.

Is it possible to overdose on Viagra? ›

Sildenafil may effect severe organ like cardiovascular system, reproductive system, pulmonary hypertension, retinal dysfunction etc. Due to overdose of the sildenafil the person get heart attack, stroke, irregular heartbeats and death may also occur in rare cases.

How long does 5mg Viagra last? ›

Once in your system, Viagra can last for around 4 hours. So, taking it any earlier than a few hours before you have sex may mean it won't work.

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