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itching, upset stomach, and reduced appetite.
There is some concern that it might also cause drowsiness, dizziness, and a blood condition called thrombocytopenia. But there isn't enough information to know for sure if danshen causes these side effects.
Special Precautions & Warnings:Pregnancy and breast-feeding: There is not enough reliable information about the safety of taking danshen if you are pregnant or breast-feeding. Stay on the safe side and avoid use.
Bleeding disorders: There is a concern that danshen might increase the risk of bleeding. If you have a bleeding disorder, don't use it.
Low blood pressure: Danshen might lower blood pressure. In theory, taking danshen might make blood pressure become too low in people with low blood pressure.
Surgery: Danshen might slow blood clotting, so there is a concern that it might increase the risk of extra bleeding during and after surgery. Stop using danshen 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.