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headache, nausea, diarrhea, and vision disturbances. Cinchona can also cause bleeding and allergic reactions, including hives and fever.
Special Precautions & Warnings:Pregnancy and breast-feeding: Don't use cinchona if you are pregnant or breast-feeding. There is some evidence that cinchona is UNSAFE to use during pregnancy. Not much is known about the safety of using cinchona if you are breast-feeding, so it's best to avoid it.
Stomach or intestinal ulcers: Don't use cinchona if you have ulcers. It might increase the risk of bleeding.
Surgery: Cinchona can slow blood clotting, so there is a concern that it might increase the risk of extra bleeding during and after surgery. Stop using cinchona at least 2 weeks before a scheduled surgery.
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.