try Cyclic guanosine monophosphate (cGMP)
Read this post ...only if you are old enough to understand this forum is to share information....
Cyclic guanosine monophosphate (cGMP) was the key to sustaining an erection. When a man gets sexually stimulated, a chain reaction occurs in the tissue of the penis that results in elevated levels of a substance called cyclic guanosine monophosphate (cGMP).
As long as there are sufficient levels of cGMP, the penis can remain erect. The more cGMP, the more robust and durable the erection.
This would be an interesting supplement.
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