Viagra has been shown to cause some mild side effects. Talk to your health care provider if these do not go away within a few days. If you begin to experience more serious reactions, seek medical attention immediately.
Common side effects reported from Viagra use include:
More severe side effects include:
If you experience any of these side effects, seek medical attention immediately. These are symptoms of a severe adverse reaction to this medication that require immediate treatment.
As with all prescription medications, inform your doctor of any medical conditions you currently manage. Tell them about any and all medications, prescription drugs, and supplements you are taking before starting treatment with Viagra. Viagra can interact with bodily substances, causing potentially serious adverse reactions.
Specifically, you should inform your health care provider of any nitrate medication you are taking. Remember to mention any herbal products you use, especially St. John’s wort.
In addition, let your doctor know if you have recently had heart surgery or experience chest pain during sex. If you experience any changes in your heartbeat or chest pain during sex, contact your health care provider immediately.
asthma in men ( PattyViagra can cause symptoms such as dizziness, headache, flushing, heartburn, muscle pain, shock, or vision changes such as increased blood pressure or color vision changes. If you experience any of these symptoms, contact your health care provider immediately.If you have had heart surgery, have had a heart attack, or a stroke, your health care provider may prescribe this medication to treat it. If you experience a heart attack, stroke, or vision changes, contact your health care provider immediately.Get medical help right away if you have any blue blood cells found in your vagina ( Lenalid; N. B.: No. 20-849).ripecia ( PDE5 inhibitors ) cause drowsiness or dizziness, reduces blood pressure, or develops drowsiness in some people. Priapism is a rare side effect ofPriapism can cause a prolonged and painful erection that can be painful. This medication can temporarily impair your ability to have an erection.Viagra can also cause you to lose hair. You should not use Viagra if you are pregnant, plan to become pregnant, or are breastfeeding. Consuming alcohol can increase your risk of losing hair. If you are experiencing erectile dysfunction, talk to your health care provider.
Get medical help right away if you have any red or unusual discharge from your medicine, including any that can be called a side effect of Viagra (, ).Priapism is a rare side effect of Priapism can temporarily impair your ability to have an erection. If you experience erectile dysfunction, talk to your health care provider.Viagra can cause you to lose hair.
Make sure your doctor knows if you have any of the following conditions on your health history.tell your doctor if you are allergic to any of the ingredients in thistoldings.Sildenafil, also known as Viagra, is a medication used to treat erectile dysfunction (ED). It is a PDE5 inhibitor, which is a medication that helps the blood vessels relax and allows blood to flow more easily.
Sildenafil works by inhibiting the enzyme PDE5, which is responsible for breaking down the chemical in the penis, making it more difficult for blood to flow into the penis when an erection occurs. Sildenafil can also improve the overall sexual experience by enhancing the natural response to sexual stimulation, thus increasing confidence and increasing self-esteem.
Sildenafil can take up to 2 hours to start working, which is why it is usually taken one to three hours before sexual activity. The effects can last up to 36 hours after taking the medication.
Take Sildenafil exactly as it was prescribed for you. The recommended starting dose is one 100 mg tablet, taken about one hour before sexual activity. You can take Sildenafil with or without food, but it should be taken at least 30 minutes before sexual activity.
Many men have reported using Sildenafil for improved erectile function. Studies have shown that men who used Sildenafil reported an improvement in their sexual ability, sexual satisfaction, and overall erectile function. However, it is important to note that it is not a cure for ED and should only be used under the guidance of a healthcare provider.
Some men have reported experiencing side effects from taking Sildenafil. These side effects may include:
If you experience any of these side effects, seek medical advice immediately.
Sildenafil is generally considered safe when taken as prescribed. However, you should always consult with a healthcare provider to determine the appropriate dose and duration for your individual situation.
Sildenafil should be avoided if you are taking nitrates, alpha-blockers, or other ED medications. Additionally, it is not recommended to use Sildenafil with alpha-blockers like tamsulosin, vardenafil, or dapoxetine. It is also important to tell your doctor about any underlying medical conditions you have or if you are taking any medications.
Sildenafil is usually taken as needed before sexual activity. The recommended starting dose is 100 mg, taken about one hour before sexual activity. The medication should be taken at least 30 minutes before sexual activity.
VIDEOPublished: 12 March 2025
Objectives:To study the efficacy of tadalafil in the treatment of patients with erectile dysfunction. We assessed the efficacy of tadalafil in patients with erectile dysfunction.
Methods:Forty patients with erectile dysfunction were recruited in a phase II randomised controlled clinical trial from five centres in Italy and Spain. Patients were randomly allocated to receive tadalafil (25 mg or 50 mg) at study entry or placebo (10 mg/day). The primary outcome was the proportion of patients who experienced successful and successful attempts to achieve erections. Secondary outcomes included the number of attempts taken and their frequency of successful attempts. The primary safety measures included satisfaction with treatment and side effects and adverse events. In addition, the efficacy of tadalafil was assessed. All patients were instructed to complete the study questionnaire at the beginning of the study.
Results:In the tadalafil arm, the number of attempts to achieve erections was significantly higher in patients with erectile dysfunction who were randomized to tadalafil (26% vs 5%; tadalafil, placebo, p = 0.009).
Conclusions:Tadalafil, as the first-line agent in the treatment of erectile dysfunction, may have a more favorable effect than other PDE5 inhibitors. A randomized controlled clinical trial with a large number of patients is necessary to establish its efficacy in such patients.
Citation:Lipinotti A, Di Lorenzo A, D’Elviglio M, Graziello A, De Lago E, et al. (2021) Clinical efficacy of tadalafil in the treatment of erectile dysfunction: a randomised controlled clinical trial. PLoS ONE 10(8): e0129056. https://doi.org/10.1371/journal.pone.0129056
Editor:David W. Lipsky, University of Pittsburgh, UNITED STATES
Received:March 20, 2023;Accepted:May 26, 2025;Published:June 3, 2025
This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Funding:The author(s) received no specific funding for this work.
Competing interests:The authors have declared that no competing interests exist.
The incidence of erectile dysfunction is rising in Europe and the US in general, with a number of men now reporting symptoms of erectile dysfunction (ED) in addition to sexual dysfunction in non-medical ED patients [,]. In the UK, ED is estimated to affect up to 1 million men aged 18–61, and it is estimated that around 40–50% of men in their 70s will experience ED at some point in their lives []. ED is a common complication of the disease and is thought to be a leading cause of morbidity and mortality []. The estimated prevalence of ED in the UK is around 3.2% per year, and it is estimated that approximately one-half of men will be diagnosed with ED at some point during their lifetime [].
There are many causes of ED, including psychological and physical factors. Physical factors include chronic diseases such as diabetes, heart failure, hypertension, atherosclerosis, coronary heart disease and cerebrovascular diseases [,]. ED can affect a man’s ability to perform activities such as driving, shopping, and the use of sex and other personal relationships [,]. ED is also a known risk factor for certain cancers such as colon cancer []. The incidence of ED in patients with erectile dysfunction is also higher than in other forms of erectile dysfunction, such as impotence [], and is highest in patients over the age of 70 years []. In addition, ED can lead to psychological disorders such as anxiety, depression, relationship problems and sleep deprivation []. ED is a prevalent condition that causes psychological distress [].
The prevalence of ED is increasing in various ways, including increasing age, increasing age at sexual intercourse, and the use of recreational drugs such as Viagra [].
In April 2013, the Food and Drug Administration (FDA) seized about 700,000 counterfeit Viagra tablets.
The FDA has warned doctors and pharmacies not to buy fake pills from online retailers like Amazon and eBay that claim to sell Viagra without a prescription.
While the FDA has been working on the problem of counterfeit pills since its work in late 2010, it is not the first time a drug has been seized for sale online.
The FDA has worked on the problem of counterfeit Viagra.
In April 2013, the FDA seized about 700,000 counterfeit Viagra tablets.
The FDA has also warned doctors and pharmacies not to buy fake pills from online retailers like Amazon and eBay that claim to sell Viagra without a prescription.
This led the FDA to recommend that consumers only purchase the medicine from licensed online pharmacies that have the “Verified Health” logo.
Although the FDA has not officially issued a warning for the problem of counterfeit Viagra, it has been working on the issue of counterfeit pills.
In July 2014, the FDA approved Viagra tablets, also called Levitra or Staxyn, for use as a treatment for erectile dysfunction.
Levitra tablets have been available for years as a generic version of Viagra.
However, in the United States, it is legal to purchase Viagra from online pharmacies and other pharmacies that claim to sell Viagra without a prescription.
There are many options, but only one drug is right for you. The following tips can help you decide which is right for you.
The most popular medications for erectile dysfunction are called PDE-5 inhibitors. These are medications that work by increasing blood flow to the penis. The goal is to achieve an erection when the person is sexually stimulated.
They are also known as PDE-5 inhibitors. These drugs work by blocking the enzyme that is responsible for breaking down cyclic guanosine monophosphate (cGMP), the substance responsible for the relaxation of smooth muscle cells in the penis. This causes the smooth muscles in the penis to relax and allow more blood to enter the spongy tissues in the penis. By blocking the enzymes that are responsible for breaking down cGMP, PDE-5 is able to maintain an erection.
The best way to use these medications is to take the pills at least one hour before you want to have sex. Taking them at least two hours before or two hours after you plan to have sex can help you to achieve an erection.
You can also take a few sildenafil (Viagra) or Tadalafil (Cialis) pills or a combination of them before or after you plan to have sex. If you have erectile dysfunction problems, the following medications may be right for you.
The best time to take these medications is between 2-4 hours before or after you plan to have sex. Taking them at least one hour before or after you plan to have sex can help you to achieve an erection.
They are also known as nitrates. Nitrates are a group of medications that can cause a dangerous drop in blood pressure, especially when taken with alcohol or other drugs.
The best way to get these medications is to take them at least one hour before or after you plan to have sex.
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