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What Causes Extreme Fatigue After Taking Cefdinir?

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Posted on Mon, 27 Mar 2017
Question: I was recently switched to another antibiotic...Cefdinir capsule 300mg and since the my blood sugar readings have been creeping up higher. My diet has not changed! Also, I have noticed that I can fall sound asleep at the drop of a hat...extremely tired even after a great night sleep! Can the new antibiotic be the cause?
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Answered by Dr. Dr. Monika Dede (55 minutes later)
Brief Answer:
Cefdinir can cause unusual tiredness or weakness and extreme fatigue as a side effects

Detailed Answer:
Hello! Ι have been through your question.

As per your concern, you are right this antibiotic can cause this situation.

It is known that Cefdinir can cause unusual tiredness or weakness and extreme fatigue as a side effects.

There is some evidence that antibiotics can affect blood sugar levels. This may be due to effects on the insulin sensitivity. Basically, antibiotics as you know, will kill bacteria that are micro-flora or good bacteria in your gut, which need to live healthily and which can affect the insulin sensitivity.

It is also well known that the infection itself can cause blood sugar changes.
Please don't stop the antibiotic, you should discuss this with your doctor before. Based on the findings, your doctor may modify the dosage or switch it over to another antibiotics (however it has to be done under strict supervision only, so please discuss this).

I hope my answer helps you. Feel free to ask further.
I wish you a quick recovery.

Note: For more detailed guidance, please consult an Internal Medicine Specialist, with your latest reports. Click here..

Above answer was peer-reviewed by : Dr. Arnab Banerjee
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Answered by
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Dr. Dr. Monika Dede

Infectious Diseases Specialist

Practicing since :2003

Answered : 1005 Questions

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What Causes Extreme Fatigue After Taking Cefdinir?

Brief Answer: Cefdinir can cause unusual tiredness or weakness and extreme fatigue as a side effects Detailed Answer: Hello! Ι have been through your question. As per your concern, you are right this antibiotic can cause this situation. It is known that Cefdinir can cause unusual tiredness or weakness and extreme fatigue as a side effects. There is some evidence that antibiotics can affect blood sugar levels. This may be due to effects on the insulin sensitivity. Basically, antibiotics as you know, will kill bacteria that are micro-flora or good bacteria in your gut, which need to live healthily and which can affect the insulin sensitivity. It is also well known that the infection itself can cause blood sugar changes. Please don't stop the antibiotic, you should discuss this with your doctor before. Based on the findings, your doctor may modify the dosage or switch it over to another antibiotics (however it has to be done under strict supervision only, so please discuss this). I hope my answer helps you. Feel free to ask further. I wish you a quick recovery.