Can you give a horse dewormer twice in row?

Yes, it's safe to give a horse dewormer twice in row, provided the dewormer is given at the correct dosage and according to the instructions provided by a veterinarian. However, it's not generally necessary to give a horse dewormer twice in a row unless there is a specific medical reason or a confirmed diagnosis of a parasitic infection.

Most dewormers are effective against a wide range of parasites, and a single dose is usually sufficient to eliminate the majority of parasites in the horse's digestive system. However, in some cases, such as when the horse is heavily infected with parasites or when the parasite species is known to be resistant to certain dewormers, a second dose may be recommended by the veterinarian.

It's important to follow the recommended dosage and frequency of administration provided by the veterinarian to ensure the safety and effectiveness of the dewormer. Overdosing or using dewormers incorrectly can lead to side effects or complications.

Always consult with your veterinarian before giving your horse any dewormers or medications to ensure the proper treatment and safety of your animal.