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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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Is Frequent Urination Because Of Flucloxacillin?

I was prescribed flucloxacillin for a lump in my armpit. As they were to be taken 4x a day I completed the first day. On that night I felt the need to urinate frequently, the next morning I took my tablet as prescribed and my urge to urinate was worse. I took my second tablet but did not take the third or fourth. I went to A&E and they told me I had a water infection and was given trimethoprim for 3 days. It is now the fourth day and I still need to urinate frequently. Is this because the flucloxacillin might be in my system?
Thanks
posted on Fri, 14 Mar 2014
Twitter Sat, 9 Jul 2016 Answered on
Twitter Mon, 11 Jul 2016 Last reviewed on
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Urologist,  's  Response
Hi
There does not seem to be any relation to flucloxacillin and urinary frequency. It is possible that you might have an urinary infection in which the bugs are resitant to trimethoprim.
Please contact your doctor or A&E again.
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Is Frequent Urination Because Of Flucloxacillin?

Hi There does not seem to be any relation to flucloxacillin and urinary frequency. It is possible that you might have an urinary infection in which the bugs are resitant to trimethoprim. Please contact your doctor or A&E again.