brand viagra

Viagra Canada

Introduction

Generic Viagra is the first of a new group of medicines called phosphodiesterase inhibitor type 5 (PDE5i). The drug dilates the blood vessels of the penis during sexual arousal. As a result the blood flow to the penis is dramatically increased, which contributes to achieving a normal erection.

Brand Viagra

Brand Canadian Viagra is the original drug produced by the pharmacological company Pfizer. Brand Viagra is best for those who doubt the generics and can afford to pay a little bit more. However, the price of Viagra Canada online is two to three times lower than Viagra at a regular pharmacy. Viagra Canada is a classic remedy for solving problems with erection. When using the drug stimulation and sexual desire are required for the drug to work. Viagra is available as tablets of sildenafil citrate, and comes in a blister pack.

Viagra Dosage

The active ingredient of Viagra is sildenafil. One tablet contains 25 mg of drug, 50 mg or 100 mg of sildenafil (as sildenafil citrate)

Viagra is used to treat men with erectile dysfunction, also called impotence. When this condition occurs in men it normally presupposes impossibility to achieve and maintain erection necessary for sexual intercourse in a natural way. Viagra works only in response to sexual stimulation. Viagra does not affect reproductive function.

How to Take?

Take the drug within 30 minutes to 1 hour before sexual intimacy, the action lasts approximately 4 hours.

Precautions

Intake of Viagra is contraindicated while taking nitrate drugs such as doctors who prescribe pain in the chest and also heart problems. Also Viagra is contraindicated taken concurrently with stimulant drugs (naprimeramilnitrit). Prior to the application of Viagra prescribed by a doctor one should tell him or her about the other medications taken, especially Bosentan (Tracleer), warfarin (Coumadin), tsimetedin (Tagamet), antibiotics erythromycin or clarithromycin (Biaxin), doxazosin (Cardura), prazosin (Minipress), terazosin ( Hytrin), AIDS drugs: amprenavir (Agenerase), tipranavir (Aptivus), darunavir (Prezista), efavirenz (Sustiva), nevirafin (Viramune), indinavir (Crixivan), saquinavir (Invirase, Fortovase), lopinavir / ritonavir (Kaletra) , fosamprenavir (Lexiva), ritonavir (Norvir), atazanavir (Reyataz), nelfinavir (Viracept), antifungal agents: itraconazole (Sporanox), ketoconazole (Nizoral), karbomazepin (Tegretol), phenobarbital (Luminal), phenytoin (Dilantin), rifampin (Rifadin, Rimactane), rifabutin (Mycobutiin).

Inform your doctor about all the medicines you are taking, including vitamins, herbs, minerals. Before you begin taking a new medication, tell your doctor first.

Patients with sickle cell disease, multiple myeloma (a disease of the spinal cord), leukemia, genital problem or deformation (Peyronie naprimerbolezn), bleeding, stomach ulcers, or hereditary eye disease (retinitispigmentosa) sparing use of dosage. If you continue erection for more than four hours should seek immediate medical attention.