https://romannia.com/erectile-dysfunction/silvitra/   

Silvitra  is an oral medication used to treat the problem of Erectile Dysfunction in Men. The medicine contains Sildenafil Citrate (100 Mg) and Vardenafil (20 Mg) as its main active ingredients. The combo of Vardenafil and Sildenafil Citrate helps increase the blood flow in the penis veins to develop an erection and also helps to improve performance. Its effects can last for around 5 hours. The medication can be used regularly once per day, or can also be used 30-60 minutes before involving in sexual activity. It is important to remember that the medication only works when one is sexually stimulated. Please consult your doctor for the best directions for using this medicine.