<s>[INST] 23 y/o Male I've been taking Mucinex DM because of a bad coughing cold I had (which is slowly clearing up)- though, for the past two days, I haven't been able to ejaculate. I get to the point where I should reach the "climax", but it never comes. I experienced this once before when I was taking an anti-depressant and I'm wondering if this is a side effect (be it rare) of Mucinex DM? [/INST] Dear user,Thank you for writing to Healthcaremagic.I have gone through your question and understand your concerns.Machined DM does not cause ejaculation problems. It is very very unlikely due to that.Some antidepressant causes delayed ejaculation.Kindly discuss this with your treating doctor.Wish you good health. </s>