We use a tube and a half on show days for my daughter's anxious pony and this does the trick. It seems to work better than the Supreme and the Extreme so we use this one now.
Safe for shows! One tube was given to my 17hh warmblood a few hours before entering the ring in our first show together. He was definitely less distracted and more settled. I would use again. Purchased 5 tubes for a week long A show. Corro customer service and shipping time was excellent as well.