Viagra pills are considered as one of the safest treatments for erectile dysfunction. But even they have side effects both mild and serious. One may experience side effects of an ED drug due to improper consumption of the drug or due to consumption of more than one tablet in a day.
Mild side effects include upset stomach, running nose, headache, blurred vision, back pain, nausea, vomiting etc. These mild side effects are generally short lived but one must see a healthcare expert if the side effects persist for a long time.
Serious side effects include Breathing difficulties, chest pain, heart failure, high blood pressure and painful erections lasting for more than 4 hours. Do not consume more than one tablet containing sildenafil citrate 100mg in a span of 24 hours. Rush to a doctor immediately if you undergo any of the serious side effects. Always consume any erectile dysfunction medication after consulting a doctor for suitable dosage.