Nitrofur Macr 100 Mg (side Effects) (Thread 229659)

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Jan Says:
I started this last evening for a bladder infection. 'Haven't been on this before, and am experiencing headaches about an hour after taking it, and continues for a couple of hours or so ... plus feeling sick to my stomach. I also noticed excessive thrist and urination ... like today I have drank 14 cups of water, and urinated fifteen times, and the night isn't even over ... I also feel like I've been hit by a mac truck ...

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Verwon Says:
How old are you?

This medication has been known to cause severe side effects in people over 65, as they tend to be much more sensitive to it.

If that isn't the answer, some of the effects, such as the excessive urination, which would in turn cause the excessive thirst, might be due to the bladder infection itself.


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Jan Says:
I have had the infection since 4/9, when I first noticed it starting ... saw the urologist last Thursday, and the culture came back this Monday. I stopped taking the RX, and called the doctor's office. They didn't see where any of the (increasing side-effects) were related to the RX ... they told me to contact my primary, and to have a culture done in two weeks. They also stated that the bacteria is resistant to the other drug I have used, but the bacteria this time is different than the other times ... I am 56 yrs old.

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Chey Says:
I am 31 and am taking it for a bladder infec, and I am also experiencing the same.... The headaches and slight nausea. I feel like I've had a headache non stop since I started taking it and I'm only on my 5th pill.

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ugh help Says:
I am 21 and i just started takin nitrofur-macr and i am on my 3rd pill and i am constantly peein and having bowel movements since i started taking this and i feel like i got hit by a bus. Is this normal?

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Chey Says:
The frequent urination is normal. If you have diarrhea ,then no, and you should call your doctor back. I had to stop taking this medication, as it was making me feel terrible. My doctor prescribed me Cephalexin , which seems to be agreeing with my body.

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Kristy Says:
I'm so sorry for how you are feeling but thank you for posting this. I was prescribed this for a bladder infection. I feel 10 times worse after 3 doses. My body feels like I was run over by a bus and I am extremely nauseous. There's no way I can take this for 6 more days so I called and they are giving me a sulphur drug instead.

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JC Says:
I started taking this 6 days ago. Luckily I only have one more pill to take. I also have had a headache about an hour after taking the pill and have had a stomach ache since day 3. Frequent urination as well but I just assume that is because of the bladder infection. Wondering how long it will stay in my system after the last pill cause I really feel like the bladder infection isn't gone yet. Any thoughts?

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Victoria Says:
I am also on it for a bug in the urine and my stomach hurts worse and I feel horrible and I cannot tell what is causing what except the urine thing is worse. Thinking of maybe changing to Kelflex? Anyone know what drug works and no side effects. Wish they would do like the old days and give a shot in the butt.

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supersub Says:
Nitrofur-macr 100mg. was prescribed to me for a UTI on Saturday the 18th. I've had 4 pills and really dreading taking the remaining ones. Very nauseous. don't have any headaches or any other symptoms. I've made sure to have food in the stomach. I sure hope it's working on the UTI because I'm about ready to throw the remaining pills out.

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Jan Says:
My advice to everyone who are experiencing side effects is to call your doctor's. Perhaps they will prescrbe something else.

I did, way back, and it is now noted in my patient record that I am not able to take this RX.

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MH Says:
What happens when you don't take Nitrofur-MACR 100 MG with food? I've only taken one tablet - forgot to take with food and I'm experiencing constant stomach cramps and bowel movements.

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Peggy Says:
This is the second time I have used the medicine, the first time thought I was sick only from the UTI but this time I was given this after a procedure to prevent an UTI and within 8 hours or so had a horrible headache, vomiting, and dry mouth. I feel bad today also but less symptoms --Same symptoms as the first time. I will never take this again.

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Dollie Says:
I am 82 came down with uti about one week ago have had severe constipation,then diarrhea almost passed out from the pain,started 3 days after I took this drug got one more to take ,actually I thought I had a flu virus never once thought it came from the antibiotic

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littlescrabblette Says:
i am feeling the same way: headache, very thirsty etc.
also feel like i have been hit by a bus--this inaddition to the fact that i 'have" fibrymyalgia." i can barely think, move, i am in such pain. problem is the doc. already changed my antibiotic for my UTI once b/c the cipro i was gave me horrible symptoms as well.

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babycakes Says:
I'm so glad l read these posts. This is my 4th day taking Nitro and i'm cramping in the stomach and feeling really down. The bladder pain is subsiding but a different stomach pain has replaced it. I hope to never take this RX again.

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jodi ellis Says:
I agree. I just got on the internet to see if this was causing my headache. I am experiencing a horrible headache also about an hour after taking it! this headache lasted for about 4 hours until i took 3 naprosen(not sure how its spelled) and went to bed. im afraid to continue this antibiotic, i was perscribed this also for bladd. infection.

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jennifer Says:
Iv been on the nitrofur-macr 100mg since Friday I feel like I'm dying I can't move my body I do have fibromyalgia my stomache has pains in it and cramping! I feel stiff like I can't move it feels like my muscles won't stretch if they do they mite tear! I feel dehydraded ,tired , dizzy,muscle cramping,the whole nine yards! This is horrible!

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mals Says:
I am 26 years old and this is the second time i am taking this medication in about a month and a halfs time because of UTIs. my hands and my feet were hurting so bad and i threw up. then i looked up the side effects of this medication and found out all three things are side effects. my whole body was hurting and i had to take muscle relaxers. in addition i have been developing a cough that is coming from my chest. The last time i was on this medication the same cough developed and turned into bronchitis. STAY AWAY FROM THIS MEDICINE. i have 7 more days to be on this and i am calling my dr tomorrow to let her know what is going on.

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cece Says:
I was on it for 5 days, 2 each day, and on the 5th day, I got a terrible itchy skin rash, dizziness, headache, fever, nausea, I felt so so bad. Went to the Dr. and found that the bladder infection was gone but I was sicker than when I started. It's taken 5 days to overcome the medication and rash and finally eating again. Never again will I take it.

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