I have been taking Zenerex for the last 2 years. I take it on as-needed basis.
It takes about an hour for it to kick in. It has given me super erections. However, i always have coughing spells after i take it and blurred vision as well as heart burn. These side effects last for several hours and make sleeping very difficult, if not impossible.
The cost is reasonable but i am going to discontinue using it because of the nasty side effects. Just because the ingredients are all "natural" does not mean that they all are good for you, either by themselves or in combination with one or more of the remaining ingredients.
Reason of review: nasty side effects.
Monetary Loss: $65.
Preferred solution: Let the company propose a solution.