Apcalis SX 20 mg or Vardenafil belongs to a group of drugs called phosphodiesterase inhibitor; Vardenafil is the 2nd medication approved by the FDA to treat Erectile Dysfunction in men. This ED drug is contraindicated in women. 
 
Generic Levitra (Vardenafil) works by relaxing the muscles and by dilating blood vessels within the penis thereby allowing a strong erection.  
 
Administration guidelines. Apcalis SX 20 mg (Vardenafil) should be administered once a day, one hour prior to the sexual intercourse. The erectile dysfunction drug may be administered without regard to food.  Generic Levitra (Vardenafil) is available in doses of 5mg, 10mg and 20mg tablets. The recommended starting dosage is 10mg, and should be increased according to individual tolerance of the drug. The medicine should not be mixed with alcohol to avoid drop in blood pressure. 
 
Side effects of Generic Levitra (Vardenafil) may include difficulty breathing, swelling of the ankles or legs, chest pain or irregular heartbeats, shortness of breath and prolonged or severe dizziness. You are strongly advised to stop taking Generic Levitra (Vardenafil) immediately and contact a doctor or pharmacist in case some of these effects occur.
 
Generic Apcalis SX 20 mg (Vardenafil) is not indicated to patients with a known hypersensitivity to the substance and to patients with severe hepatic disease. Generic Levitra (Vardenafil) is contraindicated to men who take nitrates.
 
Important to notice: Men over 50 should consult a doctor prior to taking the drug. Generic Levitra (Vardenafil) does not protect from sexually transmitted diseases such as HIV and AIDS. Generic Levitra (Vardenafil) is not an aphrodisiac; an erection can be successfully achieved with sexual stimulation only.