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Dr. Andrew Rynne

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How Long Do The Side Effects Of Levofloxacin Last?

Hello, I had a Urinary tract infection and was given Levofloxacin for 12 days. The infection went away, but I had side effects for the whole course of feeling faint, and a little nauseous and loss of appetite. The problem is, I finished the medicine five days ago, and the side effects are not going away. My brain feels very sensitive to stress, and generally unwell. My appetite is also less then normal, and my stool is looser than normal. How long do the side effects last for this drug? What should I do?
Tue, 5 Nov 2019
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Internal Medicine Specialist,  's  Response
Hi,

Loose stool is due to antibiotic associated diarrhea (Pseudomembranous colitis) and it gets relieved with Metronidazole oral & probiotic like Econorm etc.

Half-life of levofloxacin ranges from approximately 6 to 8 hours following single or multiple doses of Levofloxacin given orally or intravenously. Once you have stopped the drug, the effects will fade away.

Hope my answer was helpful. If you have further queries feel free to contact me again.

Regards,
Dr. Tushar Kanti Biswas, Internal Medicine Specialist
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How Long Do The Side Effects Of Levofloxacin Last?

Hi, Loose stool is due to antibiotic associated diarrhea (Pseudomembranous colitis) and it gets relieved with Metronidazole oral & probiotic like Econorm etc. Half-life of levofloxacin ranges from approximately 6 to 8 hours following single or multiple doses of Levofloxacin given orally or intravenously. Once you have stopped the drug, the effects will fade away. Hope my answer was helpful. If you have further queries feel free to contact me again. Regards, Dr. Tushar Kanti Biswas, Internal Medicine Specialist