What is Viagra
Viagra is one of the best-known treatments for erectile dysfunction (ED). ED is caused by insufficient blood flow to the penis, resulting in the inability to maintain an erection. Viagra can dramatically enhance the quality of an erection by increasing blood flow to the penis. Its effect lasts for 4-6 hours. Viagra is widely known to treat PAH (pulmonary arterial hypertension).
Also known as: Sildenafil citrate.
Viagra is an anti-impotence drug which enables men to achieve and sustain an erection.
The active ingredient of Viagra is Sildenafil Citrate (PDE-5 inhibitor). In response to sexual arousal, Sildenafil Citrate stimulates the release of nitric oxide (NO) in the corpus cavernosum. Nitric oxide activates the lyase enzyme which is followed by increasing levels of cyclic guanosine monophosphate (cGMP). This cyclic nucleotide relaxes smooth muscles in blood vessels of the corpus cavernosum, increasing blood flow and thus inducing an erection.
Along with the treatment of erectile disorders, Viagra effectively prolongs sexual performance, preventing premature ejaculation (PE).
Sildenafil Citrate is also used in the treatment of PAH (pulmonary arterial hypertension).
Viagra is also known as Aphrodil, Caverta, Kamagra, Suhagra, Edegra, Erasmo, Penegra, Revatio, Supra, Silagra, Zwagra.
Viagra does not protect you or your partner from sexually transmitted diseases (including HIV) or from pregnancy.
Tags:
generic viagra
viagra online
female viagra
viagra generic
buy viagra online
viagra coupon
natural viagra
herbal viagra
cialis vs viagra
viagra for women
over the counter viagra
viagra side effects
viagra for men
viagra dosage
how does viagra work
viagra for sale
cheap viagra
viagra vs cialis
viagra samples
viagra price
how long does viagra last
canadian pharmacy viagra
generic viagra online
viagra over the counter
viagra cost
viagra alternative
what does viagra do
what is viagra
side effects of viagra
viagra coupons
viagra samples free by mail
buy viagra
otc viagra
online viagra
how much does viagra cost
cost of viagra
how to get viagra
viagra 100mg
viagra without a doctor prescription
canadian viagra
free viagra samples
levitra vs viagra
viagra pill
best place to buy viagra online
viagra patent expiration
best place to buy generic viagra online
free viagra
pfizer viagra
womens viagra
women viagra
viagra sample
where to buy viagra
female viagra pill
viagra generic name
viagra pills
is viagra government funded
buy generic viagra online
viagra and alcohol
homemade viagra
viagra commercial
is viagra covered by insurance
viagra canada
order viagra online
viagra single packs
non prescription viagra
sildenafil
sildenafil citrate
sildenafil 20 mg
sildenafil generic
sildenafil 100mg
sildenafil dosage
sildenafil over the counter
sildenafil online
sildenafil citrate 100mg
generic sildenafil
sildenafil side effects
sildenafil citrate online
sildenafil price
what is sildenafil
generic sildenafil citrate
sildenafil citrate 100mg tab
sildenafil cost
sildenafil vs viagra
sildenafil 20mg
sildenafil citrate 20 mg
buy sildenafil
sildenafil 50 mg
sildenafil 20 mg cost
sildenafil 20 mg how long does it last
sildenafil 100
sildenafil 20 mg price
sildenafil coupon
sildenafil walgreens
tadalafil vs sildenafil
what is sildenafil citrate
sildenafil 20 mg walmart
where can i buy sildenafil citrate over the counter
sildenafil citrate dosage