Dogs that have been exposed to this kind of rat poison will first exhibit the abovementioned signs within 36 hours, followed by nausea, vomiting, and hematemesis (vomiting blood). Your vet will conduct a baseline biochemistry profile, which includes the analysis of both the blood plasma and other body fluids, to check the dog’s calcium and phosphorus levels, confirm the diagnosis, and monitor the condition of the dog.

Dogs that have been exposed to bromethalin usually develop signs within 1-7 days of ingesting the poison. Dogs are diagnosed based off their history of exposure to the toxin, and clinical signs.

Anticoagulant rodenticide poisoning can be diagnosed in a number of ways, including assessing blood clotting times.

The first step to treating bromethalin poisoning is to decontaminate the dog’s digestive system, which includes inducing vomiting and then administering IV fluids and other medications to lower the risk of brain swelling.
Since anticoagulant rodenticides can cause uncontrolled bleeding, the treatment includes administering blood or frozen plasma if needed. Veterinarians also give dogs vitamin K as an antidote, as the vitamin encourages normal blood clotting. It’s important to note that you shouldn’t force vomiting unless you have been given specific instructions by your veterinarian.

Following the first 2 or 3 days, which are most critical when this type of poisoning is concerned, your vet will monitor your dog's calcium and phosphorus levels for 2-6 weeks after exposure or until they have returned back to baseline. Kidney function will be monitored during that period as well.
To prevent your dog from suffering from anorexia after bromethalin poisoning, include feeding supplements in their daily diet. It will take them some time to fully recover from the toxicosis, so taking them for regular check-ups is a must.