The generic name of Viagra is Sildenafil Citrate. Taking Sildenafil Citrate in normal people is harmful and can cause numerous adverse reactions as well as side effects. For example, digestive system abnormalities, nervous system abnormalities, respiratory system reactions, and sensory organ abnormalities. 1. Digestive system abnormalities: some patients usually experience dry mouth, nausea and vomiting, rectal bleeding, gastritis, difficulty in swallowing, as well as abnormal liver function. 2. Nervous system abnormalities: normal people taking Viagra may show symptoms such as dizziness, depression, insomnia, delayed reaction, motor coordination disorder. 3. Respiratory reactions: long-term use of sildenafil citrate may also cause numerous respiratory conditions. For example, asthma, bronchitis, sinusitis, dyspnea, inflammation of the throat and so on. 4. Sense organ abnormalities: In addition to the above hazards, taking sildenafil citrate is also prone to hearing loss. Secondly, some patients will also be accompanied by tinnitus, ear pain, photophobia, burning eyes and other phenomena. It should be noted that some patients may experience low blood pressure, fainting and other adverse reactions after using Sildenafil Citrate, and it is prohibited to use this product for people who are allergic to Sildenafil Citrate, women, children and other groups. In addition, Sildenafil Citrate should not be taken at the same time with any type of nitrate. When you need to use the above drugs, you should strictly follow the doctor’s instructions to avoid serious adverse reactions.