Among the key brings about of ED is a buildup with the phosphodiesterase form 5 (PDE5) enzyme that restricts blood stream towards your penis and helps prevent or lessens the firmness of the erection.Eia kekahi, hiki i ka ho?ohana ?ana i kahi ID ho?opunipuni ke ho?ololi i ka palekana pilikino. Ma ka h??ike ?ana i kahi h??ailona ho?opunipuni e komo a