medical help for severe confusion, hallucinations, seizures, or suicidal thoughts.
## 5. Blood Sugar Changes
Some fluoroquinolones can affect blood glucose.
Both **low and high blood sugar** have been reported.
This is particularly important for people with diabetes who take insulin or other glucose-lowering medication.
Possible signs of low blood sugar include:
* Sweating
* Shaking
* Hunger
* Weakness
* Confusion
* Dizziness
People with diabetes may need closer blood-glucose monitoring during treatment.
## 6. Heart Rhythm Problems
Certain fluoroquinolones can affect the electrical activity of the heart and prolong the QT interval.
This can increase the
