Available Dosage Strengths
20 mg / 8 mg
Want to Prescribe?
Tadalafil1-3
Tadalafil, a phosphodiesterase type 5 (PDE5) inhibitor, has a mean terminal half-life of over 17 hours. This half-life is much longer than other PDE-5 inhibitors. This half-life allows for once-daily or on-demand dosing. The drug is indicated for the treatment of pulmonary arterial hypertension (PAH), erectile dysfunction (ED), benign prostatic hypertrophy (BPH), or the concurrent treatment of ED and BPH.
Vardenafil4-6
Vardenafil, a phosphodiesterase type 5 (PDE5) inhibitor, has a mean terminal half-life of 4 to 6 hours. It is effective and generally well tolerated. Vardenafil is a potent and highly selective oral PDE5 inhibitor. The drug is indicated for erectile dysfunction and it is used for on-demand use for this indication.
Tadalafil,2,3
Phosphodiesterase (PDE) has many isoforms and is an enzyme that has many functions in the body including degrading the effect of cyclic adenosine monophosphate (cAMP) and cyclic guanosine monophosphate (cGMP). PDE5 is an enzyme that is found in many parts of the body including in the smooth muscle of the corpus cavernosum, prostate, bladder, the vascular and visceral smooth muscle, skeletal muscle, urethra, platelets, kidney, lung, cerebellum, heart, liver, testis, seminal vesicle, and pancreas. Tadalafil is a selective inhibitor of PDE5, the enzyme responsible for the degradation of cGMP. The drug has selective activity on PDE5 than other phosphodiesterase isoforms. Tadalafil activity on PDE5 is more than 10,000-fold more than for PDE1, PDE2, PDE4, and PDE7 enzymes. Increased cGMP leads to smooth muscle relaxation in the corpus cavernosum which can help in maintaining an erection.
Vardenafil4-6
Phosphodiesterase (PDE) has many isoforms and is an enzyme that has many functions in the body including degrading the effect of cyclic adenosine monophosphate (cAMP) and cyclic guanosine monophosphate (cGMP). PDE5 is an enzyme that is found in many parts of the body including in the smooth muscle of the corpus cavernosum, prostate, bladder, the vascular and visceral smooth muscle, skeletal muscle, urethra, platelets, kidney, lung, cerebellum, heart, liver, testis, seminal vesicle, and pancreas. Vardenafil is a selective inhibitor of PDE5, the enzyme responsible for the degradation of cGMP. Vardenafil’s activity on PDE5 has been shown to be approximately 10 fold to 25 fold more than sildenafil. Increased cGMP leads to smooth muscle relaxation in the corpus cavernosum which can help in maintaining an erection.
Common
Tadalafil1,2
Vardenafil4,5
Contraindications 1,2,4,5
Precautions 1,2,4,5
Store at 20°C to 25°C (68°F to 77°F). Protect from light, moisture, and heat.
This sheet is a summary. It may not cover all possible drug information about this product. Call your doctor for medical advice and/or about side effects. You may report side effects to the FDA at 1-800-FDA-1088. A Wells Pharmacy Network pharmacist will be happy to answer any questions. For consultation, please call 1-800-622-4510.
