Yet myth-based questions continue to follow the little blue pill around. Can Viagra give you a never-ending erection? Let’s set the record straight with the help of urologist Drogo Montague, MD. 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.
| Risk | Description | Severity | Common Symptoms | Advice |
|---|---|---|---|---|
| Toxic ingredients | Potential presence of harmful chemicals | High | Nausea, allergic reactions | Avoid purchase from unverified sources |
| Unexpected interactions | Dangerous drug interactions | High | Dizziness, chest pain | Consult healthcare professional before use |
| Fake product risks | Contains no active ingredient or harmful substances | High | No effect or adverse effects | Use only prescribed medications |
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.
Cialis can be taken on an as needed basis, or daily.1 Generally, daily dosages are smaller than as needed doses.8 Typically, Cialis is taken as a 10mg starting dose, prior to sexual activity. The effects of Cialis will last around 36 hours. The dosage may be increased to 20mg if 10mg is ineffective or reduced to 5mg if side effects are intolerable.1 When Cialis is taken for daily use, the recommended initial dosage is 2.5mg once daily, or 5mg for people who also have BPH. Timing of the daily dosage does not matter in people using it solely for ED; however, those with BPH are advised to take it at the same time each day. Do not take more than one dose a day but your doctor may consider an increase in dosage from 2.5 to 5mg if ineffective.
Side effects of Cialis include headache and indigestion.1 Viagra is taken on an as needed basis, at a dose of 50mg, approximately 1 hour before sexual activity (although can be taken from 30 minutes to 4 hours before). The dose may be increased to 100mg if 50mg is ineffective or decreased to 25mg if side effects are intolerable.2 Viagra should only be taken once a day even though the effects wear off after approximately 4-5 hours. The main side effects are headache, flushing and indigestion.2 Rarely, color perception may be altered with Viagra. This side effect does not happen with Cialis.7 Cost of Viagra varies depending on tablet strength but is approximately $80 per tablet for the 50mg or 100mg strength. Cialis costs approximately $12 for the 5mg strength and $70 for the 20mg strength, per tablet. “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.” 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. Like nitrates, Viagra helps dilate (or expand) blood vessels constricted by coronary artery disease.
| Product | Dosage | Quantity + Bonus | Price | |
|---|---|---|---|---|
| Viagra Generic | 25mg | 10 Pills | 25.19€ 23.99€ | |
| Viagra Professional | 100mg | 180 + 4 Pills | 337.30€ 321.24€ | |
| Viagra Original | 100mg | 22 + 2 Pills | 120.71€ 114.96€ | |
| Viagra Oral Jelly | 100mg | 21 Sachets | 78.66€ 74.91€ | |
| Viagra Soft Tabs | 100mg | 60 + 6 Pills | 152.94€ 145.66€ | |
| Viagra Generic | 150mg | 120 + 8 Pills | 177.58€ 169.12€ | |
| Viagra Oral Jelly | 100mg | 63 + 7 Sachets | 190.54€ 181.47€ | |
| Viagra Soft Tabs | 100mg | 270 + 10 Pills | 419.95€ 399.95€ | |
| Viagra Generic | 100mg | 30 + 4 Pills | 60.91€ 58.01€ | |
| Viagra Generic | 50mg | 20 Pills | 40.52€ 38.59€ | |
| Viagra Original | 100mg | 12 Pills | 72.54€ 69.09€ | |
| Viagra Generic | 200mg | 120 + 8 Pills | 204.80€ 195.05€ | |
| Viagra Super Active | 100mg | 30 + 6 Pills | 64.09€ 61.04€ | |
| Viagra Generic | 100mg | 20 Pills | 45.58€ 43.41€ | |
| Viagra Original | 100mg | 92 + 4 Pills | 362.88€ 345.60€ |
Your blood pressure drops when this happens, as less force is needed to pump blood through your system.
Why does Cialis take at least 12-14 hours to work? Is taking Cialis 40 mg daily safe? Benign Prostatic Hyperplasia (BPH) (55 questions, 253 members) Sexual Dysfunction, SSRI Induced (53 questions, 171 members) Don’t believe everything you’ve heard about ‘the little blue pill’ Image content: This image is available to view online. Physician's hand holding a blue pill in the palm of his hand, offering it to a patient. Those four words are all that’s required to identify Viagra®, the brand name for a medication used to treat erectile dysfunction (ED).
Cleveland Clinic is a non-profit academic medical center. Advertising on our site helps support our mission. We do not endorse non-Cleveland Clinic products or services. The medication, officially known as sildenafil, debuted in 1998. Today, it’s used by millions of men around the world when they want to … well, rise to the occasion during an amorous moment. 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. Talk to your healthcare provider before taking Viagra with other medications. Taking Viagra to enhance your bedroom performance likely won’t make it more difficult for you to see your partner — unless you overdo it.
Dosage of Cialis may need to be reduced in men with liver or kidney problems and risk of interactions may be higher than with Viagra. Cialis is the brand name for tadalafil and Viagra is the brand name for sildenafil.1,2 Both belong to a class of medicines known as phosphodiesterase type 5 (PDE5) inhibitors. PDE5 inhibitors work only in the presence of sexual stimulation, as they rely on the natural release of nitric oxide (NO), a chemical only released during sexual arousal. NO in turn activates other substances to relax the smooth muscle inside the penis to allow the inflow of blood and an erection to occur.1,2,3 PDE5 inhibitors enhance the effect of NO.1,2 On March 27 th, 1998, Viagra became the first oral pill, and the first PDE5 inhibitor, to be approved by the FDA to treat ED.4 A generic for Viagra was approved in March 2016 5 and released in December 2017. Cialis was first approved for ED on November 21st, 2003.6 It was the third PDE5 inhibitor to come onto the market (after Levitra [vardenafil]).7 Cialis has an advantage over Viagra and Levitra in that it lasts for a lot longer – 36 hours, compared with 4-5 hours for Viagra and Levitra.1,2,7 A generic for Cialis was approved in May 2018 and released in September 2018.
Cialis generally works within 16 to 45 minutes, and its activity is not affected by food. Viagra generally works within 30 minutes, and its effect may be diminished if taken soon after a high fat meal (which may also delay how fast it works). For this reason, Viagra is best taken on an empty stomach.1,2,7 Effectiveness of all PDE5 inhibitors is similar; although reported effectiveness of Viagra, at 84% is slightly higher than that of Cialis at 81%.7 However, more men prefer Cialis because of its longer duration of effect.7 Can you take Viagra with high blood pressure? Can you take Cialis and Viagra together? How long does Viagra last and how soon does it work? 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.
| Trend | Description | Influencing Factors | Potential Impact |
|---|---|---|---|
| Increased regulation | Governments crack down on illegal sales | Law enforcement efforts | Reduced availability of fake products |
| New synthetic formulations | Development of more potent or safer illegal formulas | Underground labs | Greater health risks |
| Consumer awareness campaigns | Educating the public about dangers of fake drugs | NGOs, healthcare providers | Decrease in demand for illegal versions |
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.
| Alternative | Description | Effectiveness | Legal Status | Cost |
|---|---|---|---|---|
| Prescription Viagra | Sildenafil-based, doctor prescribed | High | Legal | Moderate |
| Tadalafil (Cialis) | Longer-lasting PDE5 inhibitor | High | Legal | Slightly higher |
| Natural supplements | Herbal products like ginseng, L-arginine | Variable | Legal | Low |
Montague.
There is limited evidence that Viagra may be beneficial for women with sexual dysfunction, but the trials have been small and the results inconsistent. In the U.S., you can legally buy generic Viagra (sildenafil) online, but only with a prescription from a licensed healthcare professional. Sildenafil for erectile dysfunction is not an over‑the‑counter (OTC) medicine in the U.S., so you cannot legally buy it without a prescription. When used alone, Cialis may cause small reductions in blood pressure, but if used with nitrates or guanylate cyclase stimulators like riociguat (brand name: Adempas) your blood pressure may dangerously drop. Do not use these drugs with Cialis.
You could get dizzy, faint, cheap viagra online or have a heart attack or stroke. Do you know these 11 amazing facts about Viagra? Is generic Viagra available in the U.S.? Does generic Viagra work just like regular Viagra? Are there any drug interactions between prednisone and Viagra? Viagra increases blood flow to your penis, which can help you get and maintain an erection for whatever activity you have in mind.
All PDE5 inhibitors are contraindicated with nitrates.1,2 The longer duration of action of Cialis means it is at higher risk for drug interactions,1 and dosages may need reducing in men with kidney or liver disease. Cialis is not recommended in men who have had a heart attack or stroke within the past 6 months, with either uncontrolled high blood pressure or severely low blood pressure, unstable angina, or other conditions that make sexual activity inadvisable.1,6 Cialis (tadalafil) [Package Insert] Eli Lilly and Company 12/2015 Viagra (sildenafil citrate) [Package Insert] Pfizer Laboratories Div Pfizer Inc 11/2015 Comparison of Phosphodiesterase Type 5 (PDE5) Inhibitors. Historical Information on Sildenafil citrate (marketed as Viagra). Comparison of clinical trials with sildenafil, vardenafil and tadalafil in erectile dysfunction. Cialis® for Once Daily Use Now FDA-Approved to Treat Men with Signs and Symptoms of Benign Prostatic Hyperplasia (BPH) and Men with Both Erectile Dysfunction (ED) and Signs and Symptoms of BPH.
Viagra Prices, Coupons and Patient Assistance Programs. Cialis Prices, Coupons and Patient Assistance Programs. Viagra (sildenafil) is approved to treat sexual dysfunction in men by the U.S. Food and Drug Administration (FDA), but it is sometimes prescribed to women off-label, which means without approval by the FDA. Viagra is an effective drug for treating male erectile dysfunction, but it targets sexual performance, not sexual arousal. But responsibility for the “in mind” part of the process is on you.