Sudden diarrhoea and vomiting of a dog

A sudden gastrointestinal infection manifests by vomiting or diarrhoea. Vomiting is often preceded by nausea, salivating, restlessness and stomach convulsions.

Acute diarrhoea starts suddenly and ends quickly. Faeces are watery or slimy, and sometimes bloody.

Causes for vomiting and diarrhoea can vary from sudden changes in feeding, food that has gone bad, overeating and medicine to viruses and bacteria. Sudden vomiting and diarrhoea are the most common illnesses that remain undiagnosed. Treatment for this illness is treatment of the symptoms. If the patient is acting and feeling normal (lively, no fever) and there is no need to suspect internal parasites, care instructions are usually enough and the dog will recover.

When a dog is vomiting or has diarrhoea, it loses water and salts. Dehydration is dangerous for a dog. Therefore, it is important to make sure the dog has enough water and that it drinks enough. It if does not drink, You should give it water, e.g. with a plastic syringe. To replace the lost water and salts, You can add Nutrisal-powder, which is available from the pharmacy without a prescription, to the dog’s drinking water.

Bacterial strain in the gut is disturbed and the dog will recover only when the bacteria has been balanced. It is important to let the digestive tract calm down. Therefore, the dog should fast and food must be given gradually.


Day 1. The dog must have enough to drink, at least 0,5 dl/kg/day. You can give water that is body temperature, e.g. rice cooking water, in small amounts until it does not come out anymore. Do not feed the dog for 24 hours. The dog should fast until symptoms have subsided, but not longer than two days.

Day 2. Because the digestive tract is empty, so food should be light, easily digestible and given gradually. Otherwise, the symptoms may return. Boil 3 parts of rice in plenty of water and add 1 part of cottage cheese, freezed fish or mild, boiled meat (chicken or beef). If the dog does not vomit, keep giving small amounts of this food several times a day.

Day 3. Feed the same food to the dog 3-4 times a day. Give small portions, so that the day’s portion is 1/3 of the normal amount.

Day 4. When the dog is alert, hungry and does not vomit or have diarrhoea, You can add a little bit of the dog’s normal dry food (soaked) into the rice mixture. The day’s portion should be approximately half of the normal amount.

Keep adding the normal food and reducing the amount of rice mixture until normal diet / number of feeding times has been achieved. This should be done gradually during a few days. An alternative from day 3 onwards is to give commercial special diet food that can be ordered from the clinic. If the symptoms return, go back to the stricter diet.

You should contact the vet if the symptoms are not over in 2-3 days, if the dog’s general condition worsens, or if



You can also give products that balance the gut (e.g.Promax, probiotics), or if the dog has diarrhoea, You can give activated carbon, which is available from pharmacies without a prescription.

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