Viagra FAQ
Every fifth man after 40 uses Viagra in the United States. Being widespread among customers Viagra remains the medication with many misconceptions around it. Patients should get sufficient information before they start their ED treatment with Viagra.
What is Viagra?
Viagra is a PDE5 inhibitor that contains Sildenafil citrate, which is its main component. Tablets are administered orally. Film-coated tablets have a diamond shape, a sign imprinted PFIZER VGR and a figure depending upon the dose prescribed.
Who should take Viagra?
Viagra is the medication that is prescribed for patients with erectile dysfunction. It is important to be examined by your doctor first. He will study the medical history to decide if Viagra really suits the patient.
What dose should be administered?
The medication is manufactured in 25mg, 50mg and 100mg pills. The dose is prescribed in accordance with severity of the patient's condition. Usually the patient begins to take 50mg tablets and looks at the reaction of the body. Increase the dose if it is not effective enough. Much depends upon the tolerability of the patient.
How often is Viagra taken?
Viagra is taken only when it is needed. It is necessary to take the medication only one time a day. Take a pill 30 minutes before sex.
Are there any contraindications to Viagra use?
It is dangerous to take Viagra with nitrates because ingredients contained in Viagra raise their hypotensive effects. Men with hypersensitivity to pde5 inhibitors should be cautious too. Viagra should not be taken when the person takes some other pde5 inhibitors. One should provide doctor with a full list of medications taken to avoid problems later on. Do not take any over-the-counter drugs when you take Viagra without letting your health care provider know about it.
In what cases should person refuse from Viagra?
Persons with heart diseases history, high blood pressure, dehydration, eye, kidney and liver problems, aortic stenosis should consult the doctor about the use of Viagra. They enter the risk group. Patient should not take Viagra when he suffers from angina, priapism. The question should be solved individually. The doctor can advise some other substitute instead.
What are the side effects of Viagra?
Sudden loss of vision and hearing is possible. Patients also reported about strange perception of colors. There are allergic reactions as well that are revealed differently such as breathing problems, swelling, hives and etc. Other side effects include dizziness, headache, numb limbs, chest pain and etc.
How long does Viagra function?
The person can count on Viagra for 4-5 hours. It is enough for sexual intercourse.
What is the mechanism of action?
Being a pde5 inhibitor, Viagra breaks down cyclic guanyl monophosphate that is produced after release of nitric oxide. Nitric oxide appears when penis is stimulated. It means that the couple should put their efforts to make the erection work. Action is needed to start the procedure. Viagra inhibits pde5 and raises the amount of cGMP in smooth muscle cells. It brings to relaxed muscle cells and improved blood flow that provides hard erection.