There is currently only one drug in the phosphodiesterase inhibitor classification. Name that drug and an important drug-to-drug interaction of this drug.
Drug Name:
Drug-to-drug interaction:
GENERIC NAME...Sildenafil
BRAND NAME...Viagra
also known as blue pill.
Indications.....Erectile dysfunction
Pulmonary hypertension.
Phatmacokinetics....Rapidly absorbed
peak plasma concentration
Metabolized by the liver
Excreted primarily in the stool
Pharmacodynamics...Slidenafil protocts cyclicguanosine monophosphate from degradation by cGMP specific phosphodiesterase type 5 in the corpus cavernosum nitrate oxide in the corpus cavernosum binds to guanylate cyclase receptors whuch results in increased levels of cGMP leading to smooth muscle relaxation of the intimal cushions of the helicine arteries.This smooth muscle relaxation leads to vasodilation and increased inflow of blood into the spongy tissue of male part,causing an eraction.
DRUG INTERACTION...
some medicines are not safe to take with viagra.Viagra should not be used in combination with a nitrate drug (for treating chest pain or heart problem) this includes nitroglycerin,isosorbide dinitrates,isosorbide mononitrates,amyl nitrate or nitrate poppers.Taking niagra with a nitrate drug can cause a sudden and dangerous drop in blood pressure.Also if taking alpha blockers such as doxazosin tamsulosin.
Side effects of sildenafil...
common...flushing
headache
Nasal congestion
heartburn
less common....
UTi
diarrhea
blue tinged vision
light senstivity
Rare.....
non arteritic anterior ischemic optic neuropathy.
patient teaching......
Take 1 hour prior to sexual activity
Do not take with nitrates.
Avoid high fat meals
If vision loss occur notify to health care practioner.
There is currently only one drug in the phosphodiesterase inhibitor classification. Name that drug and an...
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