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Flomax and Tiredness: What Users Say

Tiredness: mentioned by 13 users (4.4%)

Based on user experiences from 297 Flomax reviews, the following table shows the most commonly mentioned side effects.

All user comments are moderated by Drugs.com. Each review is verified for relevance and screened for inappropriate content. Side effects are user-reported and not clinically verified.

dizziness 9.8%
sexual dysfunction 8.4%
headaches 6.7%
runny nose 5.7%
erectile dysfunction 5.4%
pain 5.4%
heart palpitations 5.1%
fatigue 4.4%
nausea 4.4%
tiredness 4.4%

Reviews for Flomax

Commonly mentioned side effects
  • SRW...
  • February 14, 2020

For Benign Prostatic Hyperplasia "My last post was two months ago, when I had been tapering off the Flomax and going with a supplement. I am shocked that I'm doing so well. I started the Flomax out of desperation. I had to plan my days around bathrooms. Even then I couldn't always go. It was the worst at night, often having to get in the shower just to get a stream started. Long car trips were out of the question. Air travel made me very nervous. Flomax worked, but the side effects were awful. Tired, low libido, congestion, runny nose. Today, two months free of it, I have just a few moments of hesitation (when getting up from sleeping) and a short walk to and from the kitchen usually cures that. I even can have a coffee daily without urgency. I really never believed supplements work, but this one does. It is made with Saw Palmetto, Stinging Nettle, Pumpkin Seed Oil, and Lycopene. I urge you to experiment if you can't stand Flomax's side effects."

4 / 10
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  • jpo...
  • May 17, 2016

For Benign Prostatic Hyperplasia "Flomax works great and quickly too, but it sure makes me feel bad. I find myself skipping days and those days I feel much better. When I take it, I feel tired, slow, and light-headed... like I'm in a bit of a fog. I also notice that my vision is very much blurred when I take this drug. It takes hours after waking for my vision to be somewhat clearer. I'm supposed to take it twice a day, but once a day is more than sufficient. There doesn't seem to be a lower dosage in a capsule, so I open them and dump some of it out. It's pretty inexpensive so that's not a problem."

4 / 10
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  • SRW...
  • Taken for 6 months to 1 year
  • December 11, 2019

For Benign Prostatic Hyperplasia "I was on this drug Flomax for nine months, and although it worked very well, I couldn't stand the side effects. Tired, stuffy, short of breath. I didn't have ejaculation problems after I got used to it. But I decided I'd had enough and dared to taper off it. First every other day, then once every three days. Symptoms returned, but not as bad as I had anticipated. Occasional trouble starting and weak stream, but I was getting by. It's been two weeks without it. I started a natural supplement at the same time, which I take twice a day. I bought a three-month supply, and it seems it's helping me transition off the Flomax. Energy is returning, congestion is going away, and getting by pretty well. I really can't recommend this drug unless it is absolutely necessary. It's just not worth feeling like rubbish all the time."

4 / 10
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  • tke...
  • February 26, 2008

For Benign Prostatic Hyperplasia "Flomax (Tamsulosin hydrochloride) helped me to urinate normally. It did make me feel very tired and weak. I was taking one 0.4 mg a day. I started taking it with breakfast, but switched to taking it after dinner. That helped with most of the tiredness."

5 / 10
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204 Report
  • pee...
  • August 7, 2011

For Benign Prostatic Hyperplasia "I have been taking Flomax for a month for Benign Prostatic Hyperplasia. I had been getting up to urinate 2 or 3 times a night, suffering from severe pain during urination. Since starting Flomax, I have found myself dizzy if getting up quickly, blurred vision, decreased sex drive with abnormal ejaculate. I have lower back pain. I feel weaker and tired all the time. On the upside, I can go all night with no need to get up to urinate, and the pain while urinating is 50 percent less."

6 / 10
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114 Report

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  • Upa...
  • April 8, 2009

For Benign Prostatic Hyperplasia "I have been using Flomax for two years. It keeps me going but I still get up at least three times a night. Flow is not normal, light stream. My PSA is under 2.0 and always has been. I'm tired, sore, and not getting any better. I have not had sex for a long time. I'm going to try a new drug."

4 / 10
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  • Yog...
  • Taken for less than 1 month
  • August 29, 2018

For Benign Prostatic Hyperplasia "I have frequent urination at night. Dr. prescribed Flomax. I took my first pill last evening, 30 minutes after dinner. Felt nauseous in the morning. Got up for work and nearly passed out in the shower. Flopped on the bed, wrapped in a towel. Had a cold sweat. My BP must have dropped. I did not go to work today and have been lethargic all day. I am not taking Flomax ever again."

1 / 10
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  • Fem...
  • Taken for less than 1 month
  • June 15, 2016

For Urinary Tract Stones "Female, age 35, with a history of kidney stones. Went to the ER for kidney stone pain on a Friday, was given a shot of Flomax and a prescription to take daily. Saw urologist and received a CAT scan on Monday - one 5mm kidney stone in the ureter and two more (one in each kidney) to come. On day six of Flomax and going to stop taking it - feeling very dizzy, nauseous, tired with chills/low fever at night. Still haven't passed the stone but can't take these side effects. Doctor said I can go back on Flomax anytime if my kidney stone pain comes back and I need it to help pass this stone."

5 / 10
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  • sol...
  • Taken for less than 1 month
  • January 31, 2020

For Urinary Tract Stones "I am a 54 yr old, active but overweight male. After 12 days on Flomax, I passed a 0.6 mm stone, pain and incident free. About two weeks before starting the Flomax, I presented to ED in extreme pain after a few hours of discomfort and nausea. I took an anti-nausea drug followed by 12.5 mg of Endone, which calmed me down enough for some sleep. For the next week, I took Ibuprofen to deal with discomfort I was having, and after 10 days, a CT scan showed the above stone had made its way to the entrance of the bladder. At this point, I stopped feeling discomfort. I began taking a daily tablet of 400 mcg and experienced very few side effects (a little tiredness). On the morning of the 12th day, after only the slightest sensation of ‘progress,’ I heard a tinkle in the toilet bowl, and sure enough, there was the stone. I have sent it off to pathology but no word back yet."

10 / 10
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  • Loo...
  • Taken for less than 1 month
  • May 16, 2018

For Benign Prostatic Hyperplasia "I took this for about three weeks for BPH. After nearly passing out the second time after standing up, I decided it wasn't worth it. I also had nausea and lethargy. It did help somewhat with urine flow, but the side effects caused me to stop."

4 / 10
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23 Report
  • Fin...
  • Taken for less than 1 month
  • August 15, 2021

For Benign Prostatic Hyperplasia "I am 58 years old and was having 4 trips to the bathroom each night and dribbling starts and stops and often had to go again right away. I started 0.4 mg a week ago. It seems to be working. So far, the sex has still been OK, but I do feel more lethargic and have noticed a slight stuffiness in my nose and a scratchy throat. But I think it is OK, and I am OK with the side effects so far because now I can just pee when I need to."

7 / 10
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  • ItA...
  • Taken for less than 1 month
  • April 15, 2022

For Benign Prostatic Hyperplasia "7 weeks into a 9-week treatment of proton radiation/prostate cancer. I started taking Flomax for weak stream (mornings), urgency, and occasional burning. 2 weeks into taking the medication, burning was relieved to some degree, much less urgency, and stream has improved a bit. But it's been an exchange of one set of side effects for another. Now, less urgency, but more frequency, up more at night, and multiple trips to the bathroom to pee in the morning (days are fine). Better stream, but also leakage and tiredness. I feel like you rob Paul to pay Peter with this drug. Can't wait to get off it (Dr. has asked me to stay on it for a bit, until I'm about 2 weeks past my last radiation treatment. I have about 10 days to go)."

4 / 10
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  • P55...
  • Taken for 1 to 6 months
  • October 25, 2021

For Benign Prostatic Hyperplasia "Yes, there are side effects. The first couple of doses caused severe nausea (get Zofran from the doctor and take with Flomax for about 5 days), also tiredness and lightheadedness. I found improvement with taking the medication about an hour before bedtime. Symptoms were much more tolerable. I think the only real sexual side effect was reduced erection. If you can't pee, and I couldn't due to taking testosterone, which caused BPH. I took saw palmetto successfully for 3 years, then had to stop for surgery. Saw palmetto did not work once I resumed."

6 / 10
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Reviews may be edited to correct grammar/spelling or remove inappropriate content. Reviews appearing to come from parties with a vested interest are not published. This information is not intended to endorse any medication and should not replace the expertise and judgment of healthcare professionals.