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Safety note
Healthy people took lingzhi for 4 weeks; blood clotting was unaffected
40 healthy volunteers took part in a trial, taking 1.5 g of lingzhi a day for 4 weeks; platelet function and clotting measures were not affected.
Controlled human trialCompares people who took it with people who did notHow the study was done
Half took lingzhi capsules and half took a , and clotting measures before and after were compared.
What the researchers say
All participants were healthy and none were taking anticoagulants. If you take anticoagulant or antiplatelet medicines, or are preparing for surgery or a tooth extraction, tell your doctor you take lingzhi.
Source
Kwok Y et al., Anesthesia & Analgesia, 2005
Abstract checked Last updated: 2026-10-15
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