Erectile Dysfunction

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What is Viagra ?

Viagra – Sildenafil is used to treat men who have erectile dysfunction (also called sexual impotence). Sildenafil belongs to a group of medicines called phosphodiesterase 5 (PDE5) inhibitors. These medicines prevent an enzyme called phosphodiesterase type-5 from working too quickly. The penis is one of the areas where this enzyme works.

Erectile dysfunction is a condition where the penis does not harden and expand when a man is sexually excited, or when he cannot keep an erection. When a man is sexually stimulated, his body’s normal response is to increase blood flow to his penis to produce an erection. By controlling the enzyme, sildenafil helps to maintain an erection after the penis is stroked. Without physical action to the penis, such as that occurring during sexual intercourse, sildenafil will not work to cause an erection.

Sildenafil is also used in both men and women to treat the symptoms of pulmonary arterial hypertension. This is a type of high blood pressure that occurs between the heart and the lungs. When hypertension occurs in the lungs, the heart must work harder to pump enough blood through the lungs. Sildenafil works on the PDE5 enzyme in the lungs to relax the blood vessels. This will increase the supply of blood to the lungs and reduce the workload of the heart.

Viagra (sildenafil) is a phosphodiesterase-5 enzyme (PDE-5) inhibitor, meaning it blocks PDE-5. This relaxes certain muscles and blood vessels, which increases blood flow to the penis to help with an erection.

Viagra (sildenafil) is typically taken as a 50 mg dose 1 hour before sex. The dose can be adjusted anywhere from 25 mg to 100 mg depending on the effect it has. Viagra (sildenafil) should not be taken more than once a day at any dose.

It’s not recommended for men to take Viagra (sildenafil) if they’ve had a heart attack, stroke, or symptoms of heart failure in the past 6 months, abnormal blood pressure, or if they have chest pain. The safety of Viagra (sildenafil) has not been studied in these situations. Talk to your doctor if you have any of these health conditions.

Side Effects

Commonly reported side effects of sildenafil include: dyspepsia, headache, visual disturbance, and flushing. Other side effects include: epistaxis, insomnia, nasal congestion, and rhinitis. See below for a comprehensive list of adverse effects.

Along with its needed effects, sildenafil may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur while taking sildenafil:

Less common

Bladder pain
burning feeling in the chest or stomach
burning, crawling, itching, numbness, prickling, “pins and needles”, or tingling feelings
cloudy or bloody urine
dizziness
increased frequency of urination
indigestion
pain on urination
stomach upset
tenderness in the stomach area
Rare

Abnormal vision
anxiety
behavior change similar to drunkenness
bleeding of the eye
blurred vision
bone pain
breast enlargement
chest pain
chills
cold sweats
confusion
convulsions (seizures)
cool and pale skin
deafness or hearing loss
decrease in amount of urine or the frequency of urination
decreased vision
difficulty in concentrating
dizziness or lightheadedness, especially when getting up suddenly from a lying or sitting position
double vision
drowsiness
dry eyes
dry mouth
dryness, redness, scaling, or peeling of the skin
excessive hunger
eye pain
fainting or faintness
fast, irregular, or pounding heartbeat
feeling of something in the eye
fever or chills
headache (severe or continuing)
increase in the size of the pupil
increased sweating
increased thirst
lower back or side pain
migraine headache
nausea (severe or continuing)
nervousness
nightmares
numbness of the hands
painful, swollen joints
prolonged, painful erection of penis
redness, burning, or swelling of the eyes
redness, itching, or tearing of the eyes
restless sleep
seeing shades of colors differently than before
sensitivity to light
shakiness
skin lesions with swelling
skin paleness
skin rash, hives, or itching
skin ulcers
slurred speech
sore throat
sudden weakness
swelling of the face, hands, feet, or lower legs
trouble breathing
twitching of the muscles
unusual feeling of burning or stinging of the skin
unusual tiredness or weakness
vision changes
vision loss, temporary