ANTIBIOTIC SIDE EFFECTS

https://doi.org/10.1016/S0025-7125(05)70309-6Get rights and content

Antimicrobial side effects present as adverse drug reactions involving one or more organ systems. Although most antibiotics are safe considering their volume of use, some antimicrobials have the potential for life-threatening side effects. In general, β-lactams have the least frequent and least severe side effects. Although any antibiotic is capable of causing side effects, specific agents from each antibiotic class are more likely to do so than others. Clinicians should be familiar with the side-effect potential of individual antibiotics as well as the likelihood of specific agents being involved in an adverse reaction and should be familiar with the spectrum of organ involvement associated with particular antimicrobials.

Clinicians have a vast armamentarium of antimicrobials effective against a wide variety of pathogens. Most antimicrobials have a good safety profile. Physicians should consider the frequency and severity of potential adverse effects of antimicrobials when selecting agents for therapy.

Section snippets

INDIVIDUAL VERSUS CLASS SIDE EFFECTS

Most antibiotic-related adverse events are related to specific antimicrobial agents and are not related to antimicrobial classes. Clinicians often are misled by considering class side effects of antimicrobials instead of assessing the possibility of individual agents being responsible for the adverse reaction. For example, photosensitizing reactions are common with tetracycline but are rare with minocycline or doxycycline. Similarly, sparfloxacin is associated with photosensitivity reactions

Leukopenia and Thrombocytopenia

Hematologic side effects are common with a wide variety of antimicrobial agents. Isolated cytopenias occur frequently in clinical practice and may present as neutropenia, anemia, and thrombocytopenia. Leukopenia and thrombocytopenia are the most common hematologic side effects related to antimicrobial therapy.34 β-Lactam antibiotics and the sulfamethoxazole component of trimethoprim-sulfamethoxazole (TMP-SMX) are the two most common causes of isolated leukopenia or thrombocytopenia.154, 156, 158

Drug Fever

Drug fevers are the most common antibiotic-mediated hypersensitivity side effect. Drug fevers account for 10% to 15% of unexplained fevers in hospitalized patients in the United States. Drug fevers may occur with any antibiotic but are particularly common with β-lactams and sulfonamides and may occur with any antiviral, antifungal, or antiparasitic medication.154, 155 Drug fevers are defined as hypersensitivity reactions to medications whose primary clinical expression is that of fever without

NEUROLOGIC SIDE EFFECTS

Antimicrobials are responsible for a wide spectrum of neurologic adverse reactions. The most serious neurologic side effects include encephalitis, seizures, neuromuscular blockage, and muscular spasticity.

PULMONARY SIDE EFFECTS

Pulmonary drug reactions are an uncommon side effect of antimicrobial therapy. The presence of drug-induced pulmonary side effects should suggest a nonantimicrobial explanation.

Prolonged QTc Interval

Ventricular arrhythmias may occur by direct effect of the drug on myocardial irritability. A prolonged QTc interval may result in ventricular arrhythmias (e.g., torsades de pointes).41 The antimicrobials most commonly associated with prolongation of the QTc interval include IV erythromycin, terbinafine, and some quinolones. QTc prolongation occurs rapidly after an antibiotic is administered, and normalization of the QTc interval occurs after the drug is withdrawn.149 Quinolones that prolong the

Nausea and Vomiting

Many drugs are associated with nausea and vomiting, and antimicrobials are no exception. As a group, antiretrovirals commonly are associated with nausea, vomiting, or abdominal discomfort, which may be so severe as to lead to cessation of the medication. Among antibiotics, the macrolides are the least well tolerated when given by the oral route. Clarithromycin is associated with gastric discomfort and taste perversion (i.e., metallic taste). The new formulations of clarithromycin (Biaxin XL)

Drug-Induced Hepatitis

Elevations in the serum transaminases traditionally have been associated with INH in antituberculous therapy. Mild and transient elevations of serum transaminases are common with a wide variety of drugs and are particularly common with antiretroviral therapy.126 Oxacillin is the most common β-lactam associated with antibiotic-induced hepatitis, but nafcillin, even with an enterohepatic circulation, is a rare cause of antibiotic-induced hepatitis. Elevations in the serum transaminases secondary

Nephrotoxicity

Nephrotoxicity may be manifested as glomerular or tubular toxicity and may be due to a variety of anti-infectious agents.3, 7, 8, 44, 62, 84, 147 Tubular toxicity is more common and has been associated with multiple-dose aminoglycoside therapy. Nephrotoxic potential is similar among aminoglycosides and varies according to the frequency of intravenous administration.74 Aminoglycosides are potentially toxic to the tubules of the nephron. After intravenous administration, aminoglycosides saturate

METABOLIC SIDE EFFECTS

Many antibiotics may cause metabolic abnormalities. Commonly recognized side effects include gonadal and adrenal dysfunction induced by ketoconazole. Lactic acidosis may accompany abacavir therapy. Hyperglycemia frequently is associated with pentamidine administration.

Gynecomastia, lipodystrophy, and other lipid abnormalities are particularly associated with indinavir but may occur with other protease inhibitors. Pathophysiology of lipid abnormalities associated with indinavir is not clear

MISCELLANEOUS SIDE EFFECTS

A variety of other side effects have been ascribed to antimicrobials (Table 12).* Adverse reactions are important from a differential diagnostic and pharmacoeconomic standpoint.

SUMMARY

Antibiotic side effects are approached best from an individual agent perspective rather than from a class-related standpoint. As this article indicates, with the exception of drug fevers and drug rashes, most antibiotic side effects are related to individual agents and not class side effects.75, 76 Clinicians should view antimicrobial side effects as related to each organ system and be aware that more often a nonmicrobial medication is the explanation for the drug side effect rather than the

References (158)

  • L. Holmberg et al.

    Adverse reactions to nitrofurantoin: Analysis of 921 reports

    Am J Med

    (1980)
  • D.J. Johnson et al.

    Aztreonam

    Med Clin North Am

    (1995)
  • D.J. Johnson et al.

    Drug fever

    Infect Dis Clin North Am

    (1996)
  • M.R. Lunzer et al.

    Jaundice due to erythromycin estolate

    Gastroenterology

    (1975)
  • B.H. Ackerman et al.

    Vancomycin and red necks

    Ann Intern Med

    (1985)
  • AdaD. et al.

    Adverse reactions to quinolones, potential toxicities, drug interactions, and metabolic effects

    Infect Dis Clin Pract

    (1994)
  • C.A. Albert et al.

    Amphotericin B associated nephrotoxicity

    Antibiotics for Clinicians

    (1998)
  • A. Aminimanizani et al.

    Hematological toxicities of chloramphenicol

    Antibiotics for Clinicians

    (1998)
  • G.B. Appel

    A decade of pencillin related acute interstitial nephritis—more questions than answers

    Clin Nepthrol

    (1980)
  • G.B. Appel et al.

    The nephrotoxicity of antimicrobial agents

    N Engl J Med

    (1977)
  • G.B. Appel et al.

    The nephrotoxicity of antimicrobial agents

    N Engl J Med

    (1977)
  • S.M. Aquinas et al.

    Adverse reactions to daily and intermittent rifampicin regimens for pulmonary tuberculosis in Hong Kong

    BMJ

    (1972)
  • K.A. Arndt et al.

    Rates of cutaneous reactions to drugs

    JAMA

    (1976)
  • K.F. Austen

    Current concepts: Systemic anaphylaxis in the human being

    N Engl J Med

    (1974)
  • A.P. Ball

    Toxicity

  • P. Ball

    Adverse reactions and interactions of fluoroquinolones

    Clin Invest Med

    (1989)
  • J.G. Bartlett

    Antibiotic-associated diarrhea

    J Infect Dis

    (1992)
  • A. Bedikian et al.

    Neurological side effects

    Antibiotics for Clinicians

    (1997)
  • E.J. Begg et al.

    Aminoglycosides—50 years on

    Br J Clin Pharmacol

    (1995)
  • H.J.N. Bethel

    Photo-onycholysis caused by demethylchlortetracycline

    BMJ

    (1977)
  • M. Bigby et al.

    Drug-induced cutaneous reactions

    JAMA

    (1986)
  • M.D. Blum et al.

    Temafloxacin syndrome: Review of 95 cases

    Clin Infect Dis

    (1994)
  • P. Bossi et al.

    Hypersensitivity syndrome associated with efavirenz therapy

    Clin Infect Dis

    (2000)
  • P. Braun

    Hepatoxicity of erythromycin

    J Infect Dis

    (1969)
  • R.N. Brogden et al.

    Aztreonam: A review of its antibacterial activity, pharmacokinetic properties and therapeutic use

    Drugs

    (1986)
  • C.H. Brown et al.

    Study of the effects of ticarcillin on blood coagulation and platelet function

    Antimicrob Agents Chemother

    (1975)
  • G.R. Calandra et al.

    Review of adverse experience and tolerability in the first 2516 patients treated with imipenem-cilastatin

    Am J Med

    (1985)
  • A. Carr et al.

    Clinical and laboratory markers of hypersensitivity to trimethoprim-sulfamethoxazole in patients with Pneumocystis carinii pneumonia and AIDS

    J Infect Dis

    (1993)
  • J.W. Chien et al.

    Use of linezolid, an oxazolidine, in the treatment of multidrug-resistant gram-positive bacterial infections

    Clin Infect Dis

    (2000)
  • W. Christ

    Central nervous system toxicity of quinolones: Human and animal findings

    J Antimicrob Chemother

    (1990)
  • Prospective study of ampicillin rash

    BMJ

    (1973)
  • E.A. Copeland et al.

    A comparison of the effects of mezlocillin and carbenicillin on hemostasis in volunteers

    J Antimicrob Chemother

    (1993)
  • G.J. Coucchonnal et al.

    Nafcillin-associated granulocytopenia

    South Med J

    (1978)
  • B.A. Cunha

    Newer macrolides: A review

    Adv Ther

    (1996)
  • B.A. Cunha

    Aztreonam

    Antibiotics for Clinicians

    (1997)
  • B.A. Cunha

    The virtues of doxycycline and the evils of erythromycin

    Adv Ther

    (1997)
  • B.A. Cunha

    Antibiotic prescribing in the managed health care era

    Intern Med

    (1997)
  • B.A. Cunha

    Minocycline dermatologic toxicity

    Antibiotics for Clinicians

    (1997)
  • B.A. Cunha

    Sparfloxacin: A review of its microbiology, pharmacokinetics, and clinical application

    Adv Ther

    (1997)
  • B.A. Cunha

    Antibiotic induced torsades de pointes

    Antibiotics for Clinicians

    (1997)
  • Cited by (283)

    View all citing articles on Scopus

    Address reprint requests to Burke A. Cunha, MD, Infectious Disease Division, Winthrop-University Hospital, Mineola, NY 11501

    *

    State University of New York School of Medicine, Stony Brook, and the Infectious Disease Division, Winthrop-University Hospital, Mineola, New York

    View full text