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Comparison of side effects of levofloxacin versus other fluoroquinolones
1Internal Medicine Unit, Bichat-Claude Bernard Hospital, Paris, France.
Abstract:
The side-effect profile of levofloxacin was compared with that of other fluoroquinolones based on European and international data from approximately 130 million prescriptions. Levofloxacin was found to be very safe with a low rate of hepatic abnormalities (1/650,000). In contrast, 140 trovafloxacin-treated patients developed hepatic problems, 14 of which were severe, and 8 required transplantation. The main CNS problems associated with fluoroquinolones include dizziness, convulsions, psychosis, and insomnia. Levofloxacin, ofloxacin, and moxifloxacin reportedly have the lowest potential of inducing central nervous system (CNS) adverse events among the fluoroquinolones currently available. Cardiovascular problems were seen in 1/15 million levofloxacin prescriptions compared to 1-3% of sparfloxacin patients having QTc prolongation of greater than 500 msec. Moxifloxacin was also associated with QTc prolongation when compared to non-fluoroquinolone comparators. Nausea, vomiting, and diarrhoea remain the main adverse drug reactions (ADRs) associated with levofloxacin. However, the ADR rate for levofloxacin is still one of the lowest of any fluoroquinolone at 2% (compared to 2-10% for other fluoroquinolones). Ofloxacin and levofloxacin have a very low phototoxic potential, whereas this is a problem for sparfloxacin, enoxacin, and pefloxacin. The tolerance profile of levofloxacin can be considered to be very good, and better than most, if not all of the fluoroquinolones available.
Insights
Levofloxacin exhibits a favorable safety profile compared to other fluoroquinolones, demonstrating low rates of hepatic and central nervous system adverse events. Its overall adverse drug reaction rate is among the lowest, indicating good patient tolerance.
Area of Science:
- Pharmacology
- Drug Safety
- Clinical Therapeutics
Background:
- Fluoroquinolones are widely prescribed antibiotics.
- Concerns exist regarding the safety profiles of various fluoroquinolone agents.
- Comparative safety data is crucial for clinical decision-making.
Purpose of the Study:
- To compare the side-effect profile of levofloxacin with other fluoroquinolones.
- To evaluate the safety and tolerance of levofloxacin in a large patient population.
Main Methods:
- Analysis of European and international prescription data.
- Comparison of adverse event rates across different fluoroquinolones.
- Focus on hepatic, central nervous system, cardiovascular, and phototoxic effects.
Main Results:
- Levofloxacin demonstrated a very low rate of hepatic abnormalities (1/650,000) compared to trovafloxacin.
- Levofloxacin, ofloxacin, and moxifloxacin showed the lowest potential for central nervous system (CNS) adverse events.
- Cardiovascular issues were rare with levofloxacin (1/15 million) versus sparfloxacin.
- Levofloxacin's overall adverse drug reaction rate was 2%, significantly lower than other fluoroquinolones (2-10%).
- Levofloxacin and ofloxacin have low phototoxic potential.
Conclusions:
- Levofloxacin possesses a very good tolerance profile, superior to most other fluoroquinolones.
- Levofloxacin is a safe option with a low incidence of serious adverse events.
- The findings support the favorable safety and tolerability of levofloxacin in clinical practice.