Eucommia bark is a cherished herb in Traditional chinese Medicine for it's benefits of the: ligaments kidneys liver bones muscles For our dog's, eucommia bark is especially nourishing to the body's physical structure by reinforcing ligaments and tendons. Eucomma bark also supports a healthy endocrine system & immune system. Eucommia bark extract is helpful for large dogs, senior dogs, very active dogs, dog's who have joint problems and dogs who have had an CCL injury or surgery. Handcrafted and infused in small batches. All dogs are different and some adjusting to dosage may be needed. Start with a small amount and see how your dog reacts. Increase dose if necessary. Smaller doses over time will give the best benefit. Benefits will increase over time. Small breeds: start with a quarter dropperful Medium breeds: start with a half dropperful Large breeds: start with 1 dropperful Available in a 1 oz. dropper & 4 oz. bottles 1 oz : (1) dropper = 1/4 tsp 4 oz : (1) pump = 1/2 tsp