Ads
related to: pde5 inhibitors contraindications
Search results
Results From The WOW.Com Content Network
A phosphodiesterase type 5 inhibitor (PDE5 inhibitor) is a vasodilating drug that works by blocking the degradative action of cGMP-specific phosphodiesterase type 5 (PDE5) on cyclic GMP in the smooth muscle cells lining the blood vessels supplying various tissues.
A phosphodiesterase inhibitor is a drug that blocks one or more of the five subtypes of the enzyme phosphodiesterase (PDE), thereby preventing the inactivation of the intracellular second messengers, cyclic adenosine monophosphate (cAMP) and cyclic guanosine monophosphate (cGMP) by the respective PDE subtype(s). The ubiquitous presence of this ...
The blood pressure lowering effect of molsidomine can be amplified significantly by PDE5 inhibitors, potentially leading to fainting or myocardial infarction, and to a lesser extent by other antihypertensive drugs such as beta blockers, calcium channel blockers, or other nitrovasodilators. Ergolines can antagonise the effects of molsidomine. [2 ...
Avanafil is a PDE5 inhibitor that’s less likely to cause side effects than older medications and begins working faster. However, it’s only available under the brand name Stendra, with no generic.
Sildenafil (marketed as Viagra) was the first PDE5 inhibitor on the market. Originally created as a treatment for high blood pressure in 1989, it was found to have a secondary use as an effective PDE5 inhibitor, enabling men who use it to gain stronger erections after arousal. The FDA approved Viagra on March 27, 1998. [20]
The PDE5 inhibitors sildenafil, vardenafil and tadalafil are competitive and reversible inhibitors of cGMP hydrolysis by the catalytic side of PDE5. The structures of vardenafil and sildenafil are similar, they both contain similar structured purine ring of cGMP that contributes their features to act as a competitive inhibitor of PDE5.
Vardenafil's indications and contraindications are the same as with other PDE5 inhibitors; it is closely related in function to sildenafil citrate (Viagra) and tadalafil (Cialis). The difference between the vardenafil molecule and sildenafil citrate is a nitrogen atom's position and the change of sildenafil's piperazine ring methyl group to an ...
This page was last edited on 9 February 2024, at 00:17 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.