Interaction of Gabapentin and Cialis?

Cialis has been used for 4 or 5 years and allowed a good erection, although in the last year or so ejaculation has been unpredictable.
I have been taking gabapentin for a few weeks  and the cialis now appears ineffective.
Is gabapentin likely to be the cause, or has an older condtion deteriorated?
Can I apply any test to myself?
Stopping the gabapentin would ---I think---disrupt a trial of this medication

[Kevin Pho, MD]

Although possible, I am not aware of a connection between gabapentin and Cialis.  

There is no specific test to look for a connection.  You can discuss with your personal physician whether stopping the gabapentin can be tried to see if this has an effect on the Cialis.

This option can be discussed with your urologist or personal physician.

Followup with your personal physician is essential.

This answer is not intended as and does not substitute for medical advice - the information presented is for patient education only. Please see your personal physician for further evaluation of your individual case.

Kevin, M.D.
kevinmd_

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