Levaquin, generic name levofloxacin, is a prescription antibiotic classified as a fluoroquinolone. It is used to treat bacterial infections, such as pneumonia, bronchitis, urinary tract infection and skin infections. Levaquin attacks bacterial cells and prevents the correct formation of the DNA within the cells. When the drug is actively working in the body, it has the potential to produce side effects. Side effects are usually the cause of discontinuation of the drug; however, collaborating with a physician can help the patient prevent and treat side effects.
Nausea and Diarrhea
Nausea is a common side effect that may occur in up to 7 percent of individuals on Levaquin. Abdominal and vomiting may also occur. The patient may take the medication with meals to avoid these adverse reactions. Good oral hygiene and chewing gum may also prevent the occurrence of the side effects. According to the "Drug Information Handbook," diarrhea may occur in up to 5 percent of individuals. The patient should eat light meals and avoid fatty foods to prevent this unwanted effect. If the patient develops diarrhea, he can try over-the-counter medication with the recommendation of a pharmacist or physician. If diarrhea persists for more than three days, the patient should seek medical care.
Headache
Headache may occur in patients who are on Levaquin. About 6 percent of these individuals may experience headaches. Headaches may be treated with a pain killer, such as Tylenol. Headaches that persist or are accompanied by a fever may be a sign of something serious and should be reported to a health care provider right away.
Irregular Heartbeats
Levaquin may lead to changes in the normal function of the heart and produce irregular heartbeats. "Basic and Clinical Pharmacology" explains that the medication should be avoided or used with caution in patients with pre-existing irregular heartbeats, low potassium levels and drugs that treat irregular heartbeats including quinidine, procainamide, ibutilide and amiodarone. The patient should also avoid medications that change the normal function of the heart such as erythromycin, amitriptyline and nortriptyline. Individuals should always inform their physicians of their entire medical histories to avoid drug interactions and harmful side effects.
Insomnia
Patients may develop insomnia, or trouble sleeping, while on Levaquin. The "Drug Information Handbook" reports that up to 5 percent of patients may develop insomnia. This may be linked to fatigue, reported in some patients. Patients may speak with a physician if this side effect becomes bothersome. The physician may choose to switch to a different medication.
References
- "Drug Information Handbook"; Charles F. Lacy, Lora L. Armstrong, et al.; 2009
- "Basic & Clinical Pharmacology"; Bertram G. Katzung; 2007
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