Once a man has completed sexual activity, blood flow to his penis decreases, and his erection goes away. The tablet should be taken whole and not crushed or split. Take the tablet without liquid. The tablet should not be taken with liquid. The European trial confirmed these results.Vardenafil hydrochloride tablets are indicated for the treatment of erectile dysfunction. 2 DOSAGE AND ADMINISTRATION General Dose Information – For most patients, the recommended starting dose of vardenafil hydrochloride tablet is 10 mg, taken orally, as needed, approximately 60 minutes before sexual 3 . Uses. Vardenafil is used to treat male sexual function problems (impotence or erectile dysfunction-ED). In combination with sexual stimulation, vardenafil works by increasing blood flow to the. Vardenafil is used to treat male sexual function problems (impotence or erectile dysfunction-ED). In combination with sexual stimulation, vardenafil works by increasing blood flow to the penis.