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Special Precautions & Warnings:Pregnancy and breast-feeding: It is POSSIBLY UNSAFE to use black haw if you are pregnant. It might affect the uterus.
It's also best to avoid using black haw if you are breast-feeding. Not enough is known about its safety.
Aspirin allergy: Black haw contains chemicals called salicylates. There is some concern that these salicylates could trigger an allergic reaction in people with asthma or aspirin allergies.
Kidney stones: Because black haw contains oxalic acid, it might increase stone formation in people with a history of kidney stones.
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.