Common side effects reported in at least 1 in 100 patients but in less than 1 in 10 patients receiving Tygacil are: • Abscess (collection of pus), infections • Laboratory measurements of decreased ability to form blood clots • Dizziness • Vein irritations from the injection, including pain, inflammation, swelling and clotting • Abdominal pain, dyspepsia (stomach ache and indigestion), anorexia (loss of appetite) • Increases in liver enzymes, hyperbilirubinaemia (excess of bile pigment in the blood) • Pruritus (itching), rash • Headache • Increase in amylase, which is an enzyme found in the salivary glands and pancreas, increased blood urea nitrogen (BUN).