The recommended dose of Valif 20 mg (vardenafil) over 24 hours is 20 mg (1 tablet). However, the starting dose of generic Vardenafil should be 10 mg and 5 mg in men 65 years of age and older.
It is to be taken 60 minutes before sexual activity. Generic Vardenafil tablets can be taken with or without food. And always take this medicine with a full glass of water.