I am not aware of a specific medication or procedure that can reduce the amount of preseminal fluid.
If there is a component of premature ejaculation (which sometimes can lead to early preseminal fluid discharge), there are some studies showing antidepressants (i.e. SSRIs like Paxil) that can reduce the frequency of this symptom.
You can discuss this with your personal physician, or in conjunction with a urology referral.
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.
Medical Weblog:
kevinmd_b