Randy Oliver wrote:

>>
> I'm concerned about overuse of oxalic.  One a year in fall/winter 
> should be it!
>
 From National Institutes of Health:

Oxalic acid contained in rhubarb, slippery elm, and sorrel, can cause 
serious adverse effects when taken in high doses (particularly in 
children). Oxalic acid toxicity/poisoning may be associated with nausea, 
vomiting, mouth/throat burning, dangerously low blood pressure, blood 
electrolyte imbalances, seizure, throat swelling that interferes with 
breathing, and liver or kidney damage. Deaths from oxalic acid poisoning 
have been reported in an adult man eating soup containing sorrel and in 
a 4 year-old child eating rhubarb leaves. The lethal dose of oxalic acid 
for adults has been estimated as 15 to 30 grams, although doses as low 
as 5 grams may be fatal. The amount of oxalic acid in Essiac® 
preparations is not known. In cases of suspected oxalic acid poisoning, 
medical attention should be sought immediately. Regular intake of oxalic 
acid may increase the risk of kidney stones.

http://www.nlm.nih.gov/medlineplus/druginfo/natural/patient-essiac.html

-- Visit www.honeybeeworld.com/bee-l for rules, FAQ and  other info ---