Thia-cal liquid b1 calcium supplement uses a blend of all natural ingredients in a palatable liquid formula to relax horses Thia-cal is an effective way of settling a nervous horse. Horses with a deficiency of thiamine or vitamin b1 will often act irrationally, struggle to keep weight on, and lack focus Thia-cal helps to replenish what the horse is missing. Size is 32 Ounce. Dimensions are 5.25 X 2.5 X 9.25 500 Mg/Oz Of Pure Thiamine, With Calcium, Magnesium, Potassium, Chloride, And Sodium. UPC Code = 715401550329