A regular dose of Sudafed is normally needed to help retrograde ejaculation. Sudafed is pseudoephedrine and has not been taken off the market.
The fact that some semen comes out suggests not a total retrograde ejaculation. A urine sample may be needed to confirm the diagnosis.
These questions can be discussed with your 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 patients education only. Please see your personal physician for further evaluation of your individual case.
Kevin, M.D.
www.kevinmd.com