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Abstract
Extract
Sir:– The use of orally administered magnesium salts to treat ryegrass staggers seems to have gained some popularity although the evidence for its efficacy appears to be largely anecdotal.(Citation1) In Australia the effects of acute annual ryegrass (Latillm rigidllm) toxicity were ameliorated by subsequent intravenous or intramuscular injection of magnesium sulphate at 12-hourly intervals.(Citation2) However, the risks associated with parenteral administration of strong solutions of magnesium salts make this an unsuitable method of treatment for ryegrass staggers. It is possible that an oral drench of a large amount of magnesium might have a pharmacological effect on the nervous signs of ryegrass staggers, even though the disease is not associated with decreased blood levels of magnesium.(Citation3)