No useful knowledge here, sadly, but I has a book. It's one of those flow-chart type ones: 'All four legs still attached to body yes/no?' It usually ends up telling you to see a vet, but it can be useful to see if the recommended interval is 48 hours or Right Now! If you phone me, I can run through the questions with you and see where it ends up.

PS Clarendon St vet is 24 quid for a consultation, plus whatever for treatment--he's good and hard to beat on price.
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