Vet Classics Canine Blood Endurance (120 Tablets) Recommended for active dogs, pregnant dogs or dogs suffering from anemia, significant blood loss, post surgical weakness, after-birthing recovery, or heavy parasite infestation Rich in RNA/DNA, iron and vitamin B12, which are essential for the formation of hemoglobin Higher levels of hemoglobin increase the supply of oxygen and improve a dogs' level of energy and vitality May be given orally or crumbles and mixed with moist food