I will not advise to use any medicine to treat diarrhea in your dog because treatment depends upon accurate diagnosis and there are many conditions and diseases that can cause diarrhea or loose stools in dogs. Some common causes of diarrhea are
1. GI tract infections caused by bacteria, virus and fungus
2. Parasites in the GI tract
3. Stress
4. Anxiety
5. Food allergy
6. Eating of garbage
7. Changes in diet
8. Symptom of some other diseases
9. Lymphoma & cancer
10. Side effects of many medicines
So, first of all, your dog needs to be investigated for the cause and then any treatment can be suggested. So, you should take your dog to vet.
1. GI tract infections caused by bacteria, virus and fungus
2. Parasites in the GI tract
3. Stress
4. Anxiety
5. Food allergy
6. Eating of garbage
7. Changes in diet
8. Symptom of some other diseases
9. Lymphoma & cancer
10. Side effects of many medicines
So, first of all, your dog needs to be investigated for the cause and then any treatment can be suggested. So, you should take your dog to vet.