St. John's Wort

Don Christie dc_ags at
Tue May 4 10:43:24 EST 1993

I have had a question forwarded to me for posting on the

"St. John's Wort (Hypericum perforatum) is attributed to cause
photosensitization in pale pigmented animals if grazed at
specific times. Several cases of photosensitization have 
occured in one county in Nova Scotia. The Municipal Weed 
Inspector in that county is looking for information on 
testing procedures that can be done to determine if hypericin
levels are present in a live animal (tissue samples).

Also information on methodology for isolating the hypericin
from plant and animal tissue."

Anyone with information on the above can contact me at
the above address, and I will forward it. 

Thank you.

Who ELSE could have written The Adventures of Wild Bill Groady??

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