Side effects of tigecycline injection can vary in frequency and severity. Common side effects include nausea, vomiting, diarrhea, and headache. Less common side effects may include abdominal pain, dizziness, and skin rash. Serious side effects such as liver problems, allergic reactions, and Clostridium difficile-associated diarrhea are rare but can occur. It is important to consult a healthcare professional if any side effects are experienced while using tigecycline injection to ensure appropriate management and monitoring [2][3][4].

Sources:
[2] https://www.mayoclinic.org/drugs-supplements/tigecycline-intravenous-route/side-effects/drg-20072556
[3] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1426172/