Review of Abnormal Laboratory Test Results and Toxic Effects Due to Use of Herbal Medicines

Amitava Dasgupta, PhD

Disclosures

Am J Clin Pathol. 2003;120(1) 

In This Article

Herbal Medicine and Surgery

Ang-Lee et al[67] reported their recommendation for discontinuation of herbal products before surgery. The American Society of Anesthesiologists suggested that patients should discontinue their herbal medicines at least 2 weeks before surgery. Ang-Lee et al[67] recommended that garlic and ginseng should be discontinued at least 7 days before surgery because both herbs have been reported to aggravate bleeding. Ginkgo biloba should be discontinued 3 days before surgery because it inhibits platelet aggregation, causing bleeding. Kava should be discontinued at least 24 hours before surgery because kava can increase the sedative effect of anesthetics. Ma huang (ephedra) should be discontinued 24 hours before surgery because ma huang increases the blood pressure and the heart rate. St John's wort should be discontinued 5 days before surgery.

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