Is 800 mg SMZ TMP (sulfameth/trimethoprim) dosage okay for dogs?

Trimethoprim for Dogs

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Dog Medications Dosage by Weight

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SMZ Sulfamethoxazole Trimethoprim Tablet USP for dogs or horses

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Dosing Information of Trimethoprim/Sulfadiazine for Dogs and Cats

Trimethoprim Dosage Guide with Precautions - Drugs.com