This side effect has not been documented.
I suggest you discuss it with your Dr.
All the best,
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.
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.
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.
- Phentermine Information for Consumers
- Phentermine Information for Healthcare Professionals (includes dosage details)
- Side Effects of Phentermine (detailed)
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