REVIEW Tadalafil inhibits the cGMP specific phosphodiesterase type 5 (PDE5) which is responsible for degradation of cGMP in the corpus cavernosum located around the penis. Penile erection during sexual stimulation is caused by increased penile blood flow resulting from the relaxation of penile arteries and corpus cavernosal smooth muscle. This response is mediated by the release of nitric oxide (NO) from nerve terminals and endothelial cells, which stimulates the synthesis of cGMP in smooth muscle cells. Cyclic GMP causes smooth muscle relaxation and increased blood flow into the corpus cavernosum. The inhibition of phosphodiesterase type 5 (PDE5) by tadalafil enhances erectile function by increasing the amount of cGMP.
Naeije R, Huez S: Expert opinion on available options treating pulmonary arterial hypertension. Expert Opin Pharmacother. 2007 Oct;8(14):2247-65.
Burnett AL: Molecular Pharmacotherapeutic Targeting of PDE5 for Preservation of Penile Health. J Androl. 2007 Oct 17.
Guazzi M, Samaja M: The role of PDE5-inhibitors in cardiopulmonary disorders: from basic evidence to clinical development. Curr Med Chem. 2007;14(20):2181-91.
These chemical products are for research and development use only. They are not for diagnostic, therapeutic, cosmetic, or human and animal uses. They are not sold to individuals. Additional restrictions may apply.
New customers undergo an internal onboarding process. As part of this process, new customers may be asked for more information.