Levitra
Brand names,
Levitra
Analogs
Levitra
Brand Names Mixture
Levitra
Chemical_Formula
C23H32N6O4S
Levitra
RX_link
http://www.rxlist.com/cgi/generic3/levitra.htm
Levitra
fda sheet
Levitra
msds (material safety sheet)
Levitra
Synthesis Reference
No information avaliable
Levitra
Molecular Weight
488.604 g/mol
Levitra
Melting Point
192 oC
Levitra
H2O Solubility
0.11 mg/mL (HCl salt)
Levitra
State
Solid
Levitra
LogP
No information avaliable
Levitra
Dosage Forms
Tablet (5, 10, and 20 mg)
Levitra
Indication
Used for the treatment of erectile dysfunction
Levitra
Pharmacology
Vardenafil is used to treat male erectile dysfunction (impotence) and pulmonary arterial hypertension (PAH). Part of the physiological process of erection involves the release of nitric oxide (NO) in the corpus cavernosum. This then activates the enzyme guanylate cyclase which results in increased levels of cyclic guanosine monophosphate (cGMP), leading to smooth muscle relaxation in the corpus cavernosum, resulting in increased inflow of blood and an erection. Vardenafil is a potent and selective inhibitor of cGMP specific phosphodiesterase type 5 (PDE5) which is responsible for degradation of cGMP in the corpus cavernosum. This means that, with vardenafil on board, normal sexual stimulation leads to increased levels of cGMP in the corpus cavernosum which leads to better erections. Without sexual stimulation and no activation of the NO/cGMP system, vardenafil should not cause an erection.
Levitra
Absorption
Vardenafil is rapidly absorbed with absolute bioavailability of approximately 15%.
Levitra
side effects and Toxicity
Symptoms of overdose include vision changes and back and muscle pain.
Levitra
Patient Information
Levitra
Organisms Affected
Humans and other mammals