Viagra: How a Little Blue Pill Changed the World

There are many potential underlying causes of erectile dysfunction, including stress and emotional problems, brain dysfunction, problems with blood supply to the penis, and structural problems with the penis.

Brand Name	Active Ingredient	Manufacturer	Price Range ($)	Availability
Viagra	Sildenafil citrate	Pfizer	20-50 per pill	U.S. and globally
Kamagra	Sildenafil citrate	Ajanta Pharma	10-35 per pill	Online
Sildenafil CT	Sildenafil citrate	Various	15-40 per pill	Online/Pharmacies
Vivanza	Vardenafil	Menarini	25-60 per pill	Europe & Asia

Erectile dysfunction (ED, impotence) is the failure to achieve or maintain an erection. The main causes of erectile dysfunction include psychological and health conditions, medications, trauma, and lifestyle factors.

2.3 Dosage Adjustments in Specific Situations

This is the biggest difference in approved dosages of Cialis compared with Viagra. Talk with your doctor or pharmacist if you have questions about which drug is a better option for you. how you respond to Viagra, including any side effects you may have Other medical conditions you have can also affect your Viagra dosage. Your doctor may start you on a lower Viagra dosage than usual if you: have liver problems, such as cirrhosis (scarring of the liver) have severe kidney problems, such as chronic kidney disease take certain medications, such as ritonavir or doxazosin Your doctor can give you more information on the safest Viagra dosage for you, including information about factors that can affect your dosage. Usually, you’ll take your dose about 1 hour before sexual activity.

Viagra strengths

But Viagra may be taken between 30 minutes and 4 hours before you anticipate sexual activity. Viagra tablets may be taken with or without food. Keep in mind that meals high in fat may cause Viagra to take longer than usual to start working. Do not take more than one dose of Viagra per day. Doing this can increase your risk for serious side effects.

How to get Viagra

It’s important that you do not use more Viagra than your doctor prescribes. For some medications, taking more than the recommended amount may lead to side effects or overdose. Call your doctor right away if you believe you’ve taken too much Viagra. Another option is to call America’s Poison Control Centers at 800-222-1222 or use its online tool. If you have severe symptoms, immediately call 911 or your local emergency number, or go to the nearest emergency room. These may include depression, anxiety, stress, diabetes, cardiovascular disease, antiandrogens, appetite suppressants, and antidepressants, trauma due to an injury or a surgery, lack of exercise, viagra tablet for sex or addictions (smoking). Penile erection is a complex process in which the brain, nerves, muscles and blood vessels play a major role.

Product	Dosage	Quantity + Bonus	Price
Viagra Generic	150mg	360 + 10 Pills	423.48€ 403.31€	Buy
Viagra Generic	50mg	180 + 8 Pills	158.82€ 151.26€	Buy
Viagra Generic	25mg	270 + 8 Pills	184.26€ 175.49€	Buy
Viagra Generic	200mg	270 + 10 Pills	379.76€ 361.68€	Buy
Viagra Original	100mg	8 Pills	59.84€ 56.99€	Buy
Viagra Professional	100mg	30 Pills	88.92€ 84.69€	Buy
Viagra Generic	50mg	10 Pills	26.87€ 25.59€	Buy
Viagra Generic	200mg	180 + 10 Pills	277.56€ 264.34€	Buy
Viagra Generic	200mg	360 + 10 Pills	481.98€ 459.03€	Buy
Viagra Original	100mg	120 + 8 Pills	470.39€ 447.99€	Buy
Viagra Generic	150mg	120 + 8 Pills	177.58€ 169.12€	Buy
Viagra Generic	150mg	10 Pills	36.73€ 34.98€	Buy
Viagra Original	100mg	4 Pills	40.94€ 38.99€	Buy
Viagra Soft Tabs	100mg	20 Pills	62.99€ 59.99€	Buy
Viagra Super Active	100mg	90 + 10 Pills	165.61€ 157.72€	Buy
Viagra Professional	100mg	180 + 4 Pills	337.30€ 321.24€	Buy
Viagra Soft Tabs	100mg	270 + 10 Pills	419.95€ 399.95€	Buy

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

4.2 Hypersensitivity Reactions

Viagra (sildenafil) is a phosphodiesterase inhibitor (PDE-5 inhibitor) used to treat impotence (or erectile dysfunction, ED, the inability to attain or maintain a penile erection). Erection of the penis occurs when the penis fills with blood. Filling occurs because blood vessels that bring blood to the penis increase in size and deliver more blood to the penis, and blood vessels that take blood away from the penis decrease in size and remove less blood from the penis. Sexual stimulation that leads to an erection causes the production and release of nitric oxide in the penis. Nitric oxide causes an enzyme, guanylate cyclase, to produce cyclic guanosine monophosphate (cGMP) that is primarily responsible for increasing and decreasing the size of blood vessels carrying blood to and from the penis and causing an erection.

Does Viagra prevent ejaculation?

When the cGMP is destroyed by the phosphodiesterase-5 generic viagra professional sildenafil 100mg enzyme, the erection ends. Viagra prevents phosphodiesterase-5 from destroying cGMP so cGMP stays around longer, which leads to a more prolonged erection. an inability to differentiate between the colors green and blue. Serious side effects of Viagra include low blood pressure and abnormal ejaculation. Viagra may cause prolonged erections or priapism (painful erections lasting more than 6 hours).

Eat a light meal beforehand

Drug interactions of Viagra include other PDE5 inhibitors. Viagra can increase the blood pressure-lowering effects of other pressure-lowering medications, including nitrates. Cimetidine, erythromycin, ketoconazole, itraconazole, atazanavir, and mibefradil cause marked increases in the amount of Viagra in the body. Rifampin will decrease blood levels of Viagra and probably reduce its effectiveness. Although extensive testing in animals has demonstrated no negative effects on the fetus, Viagra has not been studied in pregnant women. Professional side effects and drug interactions sections courtesy of the U.S.

Condition	Caution Level	Explanation
Heart disease	High	Increased risk of cardiac events
Nitroglycerin medication	Absolute	Can cause dangerous drop in blood pressure
Liver impairment	Moderate	Altered drug metabolism
Recent stroke or heart attack	High	Risk of recurrence or complications

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How should this medicine be used?

A starting dose of 25 mg of Viagra should be considered in patients taking erythromycin or strong CYP3A4 inhibitors (such as saquinavir, ketoconazole, itraconazole). In a drug-drug interaction study sildenafil 50 mg given with alcohol 0.5 g/kg in which mean maximum blood alcohol levels of 0.08% was achieved, sildenafil did not potentiate the hypotensive effect of alcohol in healthy volunteers. Common side effects of Viagra include facial flushing, headaches, stomach pain, nasal congestion, nausea, dizziness, rash, urinary tract infections (UTIs) diarrhea, and an inability to differentiate between the colors green and blue. Viagra has not been studied in pregnant women. Erectile Dysfunction (ED) Causes and TreatmentHaving erection problems? *Compounded drugs aren’t FDA-approved or reviewed by the FDA.

• Viagra is a popular medication used to treat erectile dysfunction.
• It contains sildenafil citrate, which increases blood flow to the penis.
• Viagra tablets are typically taken 30-60 minutes before sex.
• The effects of Viagra can last for about 4-6 hours.
• Common side effects include headaches, flushing, and dizziness.
• Viagra should be used under medical supervision.

Each medication is a custom-made recommendation, based on an evaluation from a licensed medical provider. It’s 100% online and takes only 2 minutes to see your recommended treatments. All our board-cerified doctors and pharmacists are based in the US. Sildenafil is a tablet that’s taken 30–60 minutes before sex. Its effects can last for up to 6 hours when aroused. Tadalafil is a tablet that can either be taken 30–60 minutes before sex at higher strengths (10mg/20mg), or daily at lower strengths (2.5mg/5mg) if you don’t want to plan ahead.

Society and culture

There is no effect on sperm count or motility of sperm in men. It is not known whether Viagra is excreted into breast milk. Approximately 15% of persons taking Viagra experience side effects. The following are discussed in more detail in other sections of the labeling: Hypotension when Co-administered with Alpha-blockers or Anti-hypertensives Adverse Reactions with the Concomitant Use of Ritonavir Combination with other PDE5 Inhibitors or Other Erectile Dysfunction Therapies The most common adverse reactions reported in clinical trials ( > 2%) are headache, flushing, dyspepsia, abnormal vision, nasal congestion, back pain, myalgia, nausea, dizziness, and rash. Viagra was administered to over 3700 patients (aged 19-87 years) during pre-marketing clinical trials worldwide.

What should I do if I accidentally use too much sildenafil?

Table 1: Adverse Reactions Reported by ≥ 2% of Patients Treated with Viagra and More Frequent than Placebo in Fixed-Dose Phase II/III Studies When Viagra was taken as recommended (on an as-needed basis) in flexible-dose, placebo-controlled clinical trials of two to twenty-six weeks duration, patients took Viagra at least once weekly, and the following adverse reactions were reported: Table 2: Adverse Reactions Reported by ≥ 2% of Patients Treated with Viagra and More Frequent than Placebo in Flexible-Dose Phase II/III Studies The following events occurred in < 2% of patients in controlled clinical trials; a causal relationship to Viagra is uncertain. The following adverse reactions have been identified during post-approval use of Viagra. It is not possible to determine whether these events are related directly to Viagra, to sexual activity, to the patient's underlying cardiovascular disease, to a combination of these factors, or to other factors. It is not possible to determine whether these reported events are related directly to the use of Viagra, to the patient's underlying risk factors for hearing loss, a combination of these factors, or to other factors. Most, but not all, of these patients had underlying anatomic or vascular risk factors for developing NAION, including but not necessarily limited to: low cup to disc ratio (“crowded disc”), age over 50, diabetes, hypertension, coronary artery disease, hyperlipidemia and smoking.

How to take Viagra safely

It is not possible to determine whether these events are viagra daily related directly to the use of PDE5 inhibitors, to the patient's underlying vascular risk factors or anatomical defects, to a combination of these factors, or to other factors. Consistent with its known effects on the nitric oxide/cGMP pathway, Viagra was shown to potentiate the hypotensive effects of nitrates. When Viagra is co-administered with an alpha-blocker, patients should be stable on alpha-blocker therapy prior to initiating Viagra treatment and Viagra should be initiated at the lowest dose. When Viagra 100 mg was co-administered with amlodipine (5 mg or 10 mg) to hypertensive patients, the mean additional reduction on supine blood pressure was 8 mmHg systolic and 7 mmHg diastolic. It is therefore recommended not to exceed a maximum single dose of 25 mg of Viagra in a 48 hour period. The effects of tadalafil can last up to 36 hours when aroused.

• Viagra started being prescribed in the late 1990s for ED treatment.
• The medication can be used by men of various age groups.
• It’s important to avoid grapefruit or grapefruit juice while using Viagra.
• Some patients may experience visual disturbances after taking it.
• Viagra may cause priapism, a painful and prolonged erection.
• Women should not take Viagra for sexual enhancement.

If you’re planing to take in an hour before sex, men usually start with the 10mg dose to minimize side effects. If it works well, stick with it. If it’s not working after a few tries, you can increase to 20mg.

• Viagra mimics the effects of natural nitric oxide in the body.
• It is important to take Viagra exactly as prescribed.
• The medication can cause headaches due to vasodilation.
• Viagra’s onset and duration vary among users.
• Exercise caution if you experience chest pain or severe dizziness.
• Always inform your doctor about any other medications taken.

If you want to take tadalafil every day for constant effects, men usually start with 5mg. If it’s too strong or causes side effects, you can try a lower 2.5mg dose.

What special precautions should I follow?

Learn about erectile dysfunction causes and treatments such as drugs.. Erectile Dysfunction (Impotence) Quiz: Causes & TreatmentDid you know that certain medical condition may be responsible for ED? Some causes of impotence are medically treatable and.. Did you know that certain medical condition may be responsible for ED? Erectile DysfunctionErectile dysfunction (ED, impotence) is the failure to achieve or maintain an erection.