Most Common Side Effects of Tigecycline
Tigecycline, an intravenous glycylcycline antibiotic used for complicated skin/skin structure infections, intra-abdominal infections, and community-acquired pneumonia, has these most frequent side effects from clinical trials and post-marketing data: nausea (up to 26%), vomiting (up to 18%), and diarrhea (up to 13%). These gastrointestinal issues occur in over 10% of patients and often lead to discontinuation.[1][2]
How Often Do Serious Side Effects Happen?
Less common but notable effects include headache (7-11%), abdominal pain (4-6%), and injection-site pain or reaction (3-5%). Serious risks like superinfections (e.g., Clostridium difficile-associated diarrhea), pancreatitis, or increased mortality in ventilator-associated pneumonia patients appear in 1-5% of cases. Hypersensitivity reactions and liver enzyme elevations occur in under 3%.[1][3]
Why Do Nausea and Vomiting Occur with Tigecycline?
These stem from tigecycline's broad-spectrum action disrupting gut flora and its biliary excretion, irritating the GI tract. They're dose-related and peak early in treatment; antiemetics like ondansetron often mitigate them without stopping therapy.[2][4]
Side Effects in Specific Patient Groups
Pregnant patients face fetal harm risks (Category D); avoid use. Elderly or hepatic-impaired patients see higher rates of nausea (30%+) and elevated mortality. Pediatric data is limited, but nausea remains top at 20-25%.[1][3]
What Do Patients Report vs. Clinical Data?
Real-world use via FDA FAERS shows disproportionate nausea/vomiting reports (over 40% of adverse events), plus taste perversion and dizziness not as prominent in trials. Long-term use raises pancreatitis risk.[4]
How Does Tigecycline Compare to Other Antibiotics?
Vs. carbapenems like ertapenem, tigecycline has 2-3x higher nausea (26% vs. 8%) but similar diarrhea rates. Against vancomycin, it avoids nephrotoxicity but adds GI burden.[2][5]
[1]: Tygacil (tigecycline) Prescribing Information, Pfizer
[2]: ClinicalTrials.gov summaries for tigecycline studies (e.g., NCT00079547)
[3]: Drugs.com - Tigecycline Side Effects
[4]: FDA Adverse Event Reporting System (FAERS) Public Dashboard
[5]: IDSA Guidelines on Skin/Soft Tissue Infections