Generic Viagra

How does Generic Viagra work?

As a PDE inhibitor, Viagra (Sildenafil) allows for the increase of blood flow through blood vessels into the penis when a man gets sexually stimulated. With the increase in blood flow, erection is achieved and as blood is retained, erection is maintained.
Viagra, however, is not a cure-all for ED; it is also not a guarantee for increasing stimulation or sexual urges and desires. Viagra is not used as a birth control drug and thus will not prevent pregnancy. It is also not a safe-sex drug and will not prevent the spread or transfer of STDs (or sexually transmitted diseases) like HIV AIDS.

How should I take the product?

Viagra (Sildenafil) is an orally administered or orally-taken tablet. Taken about an hour before sexual intercourse, Viagra can also be taken even four hours before sexual activity. It should not be taken less than 30 minutes before sex, though, for best efficacy. Like any other drug, Viagra doses should not be increased or decreased vis-?-vis the prescribed doses and without doctor's advice. You should inform your doctor of any medical or dietary restriction you may have as this may affect the effectiveness of the product.
In case of an overdose on Viagra or Sildenafil, treat it like a poisoning case and seek immediate emergency medical attention.
As the drug is taken as needed, that is, when you are about to have sexual intercourse, there are no fixed times or frequencies for taking it and thus, you are not about to miss a dose.

Precautions

The pharmacological effects of Viagra or Sildenafil will be different for each patient or taker considering present medications, bodily conditions, and other factors. If you want to take Viagra, make sure that you apprise your doctor of these. You should make your doctor aware of the fact that you are taking sildenafil or, for that matter, if you are taking any other medications. Of particular attention to be relayed to your doctor are your intake of nitrates like isosorbide dinitrate like Isordil, isosorbide mononitrate like Imdur, and nitroglycerins like Nitro-BID and Nitro-Dur.
You should also inform your doctor of your use of herbal products, more particularly St. John's wort. If you have ever had a history or experience of the following, any or all of them are worth telling your doctor: a bleeding disorder, ulcer, heart disease, kidney disease, liver disease, heart conditions, hypertension or low blood pressure, myeloma, problems with your blood cells, penile fibrosis or angulation, and diabetes. Other conditions worth taking note of are eye diseases, vision loss, or sexual abstinence due to medical reasons and medical advice.

Side effects

Some of Viagra's more common side effects will include headaches, an upset stomach, diarrhea or constipation, dizzy spells, flushing, and runny nose. There may be more serious side effects like loss of vision, a blurring of your vision, color discoloration, a painful erection, erection that lasts more than four hours, chest pain, fainting spells, an itching sensation especially while urinating, and rashes. If any of these foregoing side effects manifest themselves, make sure you seek medical attention, more so if the side effects persist and become especially troublesome for you.

What should I avoid while taking Generic Viagra?

Take heed to avoid taking street or recreation drugs like amyl nitrate or poppers like butyl nitrate when you are on Viagra as the foregoing drugs contain nitrates that may react adversely to the sildenafil.
Before taking grapefruit juice or eating grapefruits, check out with your doctor first if you can do so while on Viagra medication. Aside from this, no other dietary restrictions, except as otherwise advised by your doctor, exist for Viagra so you can continue on with your regular diet.

Drug interactions

If you are on any other prescription or over-the-counter medication like the following, make sure that your doctor is made aware of them: vitamins, mineral supplements, nutrition supplements, alpha blockers like alfuzosin (Uroxatral), doxazosin (Cardura), tamsulosin (Flomax), and terazosin (Hytrin). Note also your use of antifungals like fluconazole Diflucan, itraconazole, ketoconazole Nizoral, and voriconazole Vfend. Other medications that you may be taking and should be relayed to your doctor are the following: aprepitant (Emend), carbamazepine (Carbatrol, etc.), cimetidine (Tagamet), clarithromycin (Biaxin), cyclosporine (Neoral and Sandimmune), delaviridine (Rescriptor), dexamethasone (Decadron and Dexpak), diltiazem (Cardizem and others), efavirenz (Sustiva), erythromycin, fluoxetine, protease inhibitors for HIV, nefazodone, nevirapine, other medications for ED, Phenobarbitals, phenytoin, rifabutin, rifampin, sertraline, troleandomycin, verapamil, and zafirlukast.