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contraindicated, as is the administration of agents by
 
contraindicated, as is the administration of agents by
 
intramuscular injection.
 
intramuscular injection.
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 +
If ingestion was recent (in past three hours) induce vomiting. Stomach lavage may also be indicated if dogs fail
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to vomit. Coumarin rodenticide preparations are often in the form of blue or green granules.
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*Give the specific antidote - vitamin K. Phytomenadione, a vitamin K1 analogue available as tablets or injection
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(Konakion; Roche), is the drug of choice and reverses low prothrombin levels in 30 minutes. Menadiol (Synkavit; Roche)
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is a synthetic K3 and is not as effective.
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Dose. 2 - 5 to 10 mg three times daily orally for five days because most coumarins are metabolised and excreted slowly
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over two to four days, and longer in some instances.
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If clinical signs are severe can give 5 mg intravenously over six to eight hours. However, as anaphalactic reactions
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to intravenous administration have been reported in the dog intramuscular route is preferable.
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*Give a whole blood transfusion - this replaces the clotting factors as well as replacing blood loss through haemorrhage.
    
==Prognosis==
 
==Prognosis==
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