Sildenafil citrate is the active component in Kamagra 50mg.
PDE5 activation is inhibited by sildenafil.
Men's penile tissue naturally contains the PDE5 enzyme.
The area becomes flaccid when the enzyme levels are higher than usual.
One way to do this is to restrict blood flow.
PDE5 levels are regulated by sildenafil.
It facilitates blood vessel dilatation, which eases blood flow.
A man can therefore achieve and maintain an erection. 

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