Can phentermine effect male urination?

I started taking phentermine to lose weight. I am on day 2 and I am having problems urinating. I have to pee but then it doesn't come out with any flow it just dribbles out. The later it gets from when I took the phentermine the easier it is to pee. I was prescribed 37.5 mg once a day. I guess I will have to discontinue the use of this drug unfortunately. Glad I found this blog I wasn't sure what was going on
Wish my DR would have mentioned this could be a side effect. When googling side effects for this drug this one was not listed.

Yes, the physician who prescribed phentermine should have informed you one of the side effects of taking the weight loss medication, is it can cause your prostate to enlarge resulting in the urination issues. Stop taking for a few days, and you definitely will see the difference.

I've been on Phentermine 37.5mg for weight loss since May 1st. I'm 27, and about a week in, I started having problems urinating. I've been down every rabbit hole possible, from my wife cheating on me, to catching something from a dirty bathroom in New Orleans. I'm very relieved to see that others have dealt with the same issue, down to the dribble at the end. (Sorry y'all had to deal with it lol.) I've been racking my brain trying to figure out any possible outcome. Glad I'm not the only one.

It's good to see this forum as I've had the exact same issue. It seems like the prostate is swelling, causing the issue. If I wasn't already up enough at night. My bigger issue is it's not working like years ago. The pills were black and it was twice a day. I have felt the effects where I'm not eating nearly half of what I was and definitely can't finish a plate but no weight is coming off. I would add that the lack of water causes bigger issues. I've had two episodes of cramping/spasms. One in the neck and the other in the abdomen. So I do feel better when I force myself to drink lots of water. I know it's working somewhat as I have little to no reflux and no heartburn, which is a definite side effect of eating less.

I have been taking Phentermine 37.5 for quite awhile and I do experience this issue. It happens to me when I don’t drink enough water. If you workout, you’ll need to replenish every drop you sweat plus more. Try it and let me know if it works for you. Also the more soft drinks I consume, it harder it is to urinate.

I’m also experiencing this issue.. been on phentermine about a month. 26M

I just had a follow up question to yours. I’ve been going through a great deal of anxiety because of the same issue. I’ve been taking phentermine 37.5mg for the past 7 weeks and began having difficulties with urinating. All my test came back okay including my PSA. Just finding out it seems like it’s this medication. How long after stopping will everything go back to normal(restriction) with urinating? Should there be any concerns for permanent damage as far as the urethra or anything else?

I am finding the same issue with inability to urinate on occasion and other times difficulty to start flow after taking phentermine for 10 days. Urine flow is also greatly reduced, and incomplete emptying of bladder occurs. Prior to this, although I had frequent urination and got up to pee 2 times a night- had little to no problems with delayed urination. Not sure what to do, but it is concerning when you cannot go.

I have had similar issues. I started taking phentermine about a month ago and the only side affects i have had is when I go to pee, the flow isn’t as as full as usual and it feels like my prostate may be inflamed. I know when I have intercourse with my wife I still have a orgasm but no where near the amount of semen comes out. I usually tend to fill over 6 ml and now it’s very little. Still fills good and I have lost weight. Maybe it’s just something that comes with the meds.

Yes, it can. I have taken phentermine off and on over the course of several years and always experience this issue when actively taking it. It creates what I can only describe as “spasms” of the prostate muscles (for me) at the end of urinating which restricts the flow and results in incomplete bladder emptying and a tendency to dribble afterwards. These spasms can also be experienced during ejaculation, creating a feeling of “cramping” in the pelvic floor which is usually accompanied by a “burn” akin to flexing a muscle until it is fatigued, which then subsides after several minutes.

The effect is, in my experience, transient and disappears completely in one to several days after discontinuation. As long as it isn’t causing more discomfort than the benefits of taking the medication are worth OR it isn’t completely obstructing urination to the point of being unable to void at all, you should be fine.

I am 45 year old male, I have taken Phentermine several times over 15 years. The one thing it has always did to me was restrict the flow of urination while taking it, and another was occasional burning while I urinate. The burning is rare but The flow restriction is constant. My Dr told me before that it can cause your prostrate to inflame which pinches the urethra and slows down the flow.

It certainly has affected mine. I've been on it for just over two months, and about a month in noticed that my urine flow was restricted, even when I had a full bladder.

This side effect has not been documented.

I suggest you discuss it with your Dr.

https://www.drugs.com/sfx/phentermine-side-effects.html

All the best,

maso.-