Vardenafil pharmacokinetics have not been evaluated in patients requiring renal dialysis. Study 1: This study was designed to evaluate the effect of 5 mg vardenafil compared to placebo when administered to BPH patients on chronic alpha-blocker therapy in two separate cohorts: tamsulosin 0. Therefore, the use of such combinations is not recommended. While this normally would be expected to be of little consequence in most patients, prior to prescribing LEVITRA, physicians should carefully consider whether their patients with underlying cardiovascular disease could be affected adversely by such vasodilatory effects. Avoid medication errors by using only the form and strength your doctor prescribes. Stepwise increase in alpha-blocker dose may be associated with further lowering of blood pressure in patients taking a PDE5 inhibitor. · For most patients, the recommended starting dose of LEVITRA is 10 mg, taken orally, as needed, approximately 60 minutes before sexual activity. The dose may . Dosage Form & Strengths. LEVITRA is formulated as orange, round, film-coated tablets with “BAYER” cross debossed on one side and “5”, “10” and “20” on the other side . LEVITRA Vardenafil tablets 5 mg, 10 mg, 20 mg of vardenafil, as vardenafil hydrochloride Bayer Standard cyclic GMP-Specific Phosphodiesterase Type 5 Inhibitor .