In order to make sure that you are using Viagra safely, it’s important to know how Viagra works. It is available in two forms: Viagra and sildenafil citrate. The form of Viagra that is used to treat erectile dysfunction is sildenafil. This medication increases blood flow to certain areas of your body that make erections possible. The effect begins almost immediately after you ingest the pill and lasts throughout your sexual activity. For best results, you should wait at least four hours before having sex with your partner. Remember to take Viagra exactly as directed.
In addition to taking Viagra exactly as your doctor prescribes, you should also take a number of other viagra precautions in order to use this medicine safely. Never take Viagra if you are taking nitrates (e.g., nitroglycerin). This medicine may cause you to have a severe reaction, including chest pain, and possibly death. If you’re currently using Viagra, you should discuss with your doctor how to lower your dose or switch to a different type of ED medication. Do not use Viagra for more than one week unless directed by your doctor. Use this medicine at your own risk.