What side effects can this medication cause?
If you experience any of the following symptoms when taking leucovorin, call your doctor immediately:
an allergic reaction (difficulty breathing; closing of the throat; swelling of the lips, tongue, or face; or hives)
vomiting, diarrhea, or mouth sores
seizures
fainting
No other side effects have been reported from the use of leucovorin alone. Side effects are usually caused by the patient's chemotherapy, not by leucovorin.
Why is this medication prescribed?
Dosage and using this medicine
What special precautions should I follow?
What should I do if I forget a dose?