Get emergency medical help if you have signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Stop using Cyklokapron and call your doctor at once if you have:
problems with your vision (including color vision);
a light-headed feeling, like you might pass out;
a seizure;
painful or difficult urination, blood in your urine;
signs of a stroke--sudden numbness or weakness (especially on one side of the body), severe headache, slurred speech, balance problems;
signs of a blood clot in the lung--chest pain, sudden cough, wheezing, rapid breathing, coughing up blood; or
signs of a blood clot in your leg--swelling, warmth, or redness in an arm or leg.
Common side effects include:
nausea, vomiting, diarrhea;
dizziness, feeling light-headed;
mild itching or rash; or
feeling unusually happy.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
 Tranexamic acid side effects (more detail)
