CD,
If you were "having some trouble having an errection" all it did was enable you to have a normal errection. Blood circulation problems increase with operations, poor life style choices (drinking, smoking), age, obesity (sp)and other health factors such as high blood pressure).
Also, you need to be aware of the power of the mind. In testing (studies) a sample group was given sugar pills and within that group a considerable percentage showed improvement in their ED difficulities.
Peace
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