text: This list is NOT a complete list of side effects reported with doxycycline. Your health care provider can discuss with you a more complete list of side effects.\n\nSome possible uncommon but serious side effects of doxycycline include:\n\n    * a life-threatening allergic reaction (symptoms are trouble breathing; closing of the throat; swelling of the lips, tongue, or face; hives)\n\n    * blood problems (symptoms are unusual bleeding or bruising)\n\n    * liver damage (symptoms are yellowing of the skin or eyes, dark urine, nausea ,vomiting, loss of appetite, abdominal pain)\n\n    * irritation of the esophagus\n\nOther more common, but less serious, side effects include:\n\n    * nausea, vomiting, diarrhea\n\n    * increased sensitivity of the skin to sunlight\n\n    * vaginal yeast infection