Viagra (sildenafil citrate) is a drug available by prescription used to treat the symptoms of erectile dysfunction. It belongs to the group of drugs called phosphodiesterase inhibitors and works by increasing the blood flow to certain parts of the body. You are not supposed to take this drug if your health care provider told you not to put too much strain on your heart and refrain from sexual activity. Headache, memory problems, upset stomach, back pain, stuffy nose and warmth in your chest or face are the most commonly reported mild side effects. Your health care provider has to be notified immediately if you have vision changes, chest pain, sudden loss of hearing or vision, irregular heartbeat, an erection that lasts for longer than 4 hours, lightheadedness, swelling, or fainting.
Although it's never a good idea to drink alcohol simultaneously with taking Viagra this combination is not expected to cause any problems provided that you consume alcohol in moderation. Blood alcohol level of 0.08 percent is completely safe and you can use Viagra without being worried about side effects. Before you have any kind of surgery tell your health care provider about the fact of taking Viagra as this information can affect the choice of drugs that will we used during the surgery. It's generally recommended to stop taking Viagra if you have a serious surgery and give your body some time to get rid of the traces of this medicine in blood. If you have any signs of an allergic reaction report them to your health care provider right away. The most typical signs include swelling of your face, lips and throat, hives, trouble breathing.