
Lab TestsViagra ® is most commonly used to treat erectile dysfunction, the inability to maintain an erection during and before intercourse, although this drug has been used in the past to treat other illnesses such as hypertension and altitude sickness in certain people. Viagra ® is needed when there is an insufficient blood flow to the penis and therefore preventing the person from achieving an erection, this situation can be both uncomfortable and embarrassing for most people who suffer from this problem.

Viagra ® increases the blood flow in the penis, once the person feels sexually aroused, this drug will not have effect if the person does not feel aroused and the drug itself normally takes around thirty to forty minutes to start working, in some people this time may decrease, and the effects can last up to four hours if the person does not have intercourse, however, in the case that intercourse does take place, the erection will go away once intercourse is over. If the erection lasts any longer than this time it is advisable to speak to a doctor as it can cause long term effects.
This type of medication can cause certain side effects in different men and therefore should only be taken when prescribed by a doctor. However the market for Viagra ® has raised over the years and it is now possible to achieve a Viagra ® online prescription and buy Viagra ® directly from a retailer.
If this medication is brought by an unknown source it is difficult to be sure that the ingredients are trustworthy. There are a lot of online companies that offer these pills at very low prices and most are not from accredited pharmacies and the pills that are sold may not give the buyer the guarantee or the satisfaction that they have invested their money in.
There are hundreds of trustworthy online web sites for people to buy Viagra ® from that offer advise and other options before buying the product. Most of these pages will also offer the option of speaking to a doctor to make sure that Viagra ® is the best choice or if there are other ways to combat erectile dysfunction.
It is advisable to seek a professionals opinion before this medication is brought and to go through a complete medical examination to make sure that the buyer has a sufficient medical health to be able to use this drug. Most professionals will not prescribe Viagra ® meds if the person suffers from cardiac problems or different types of chest pains.