To be competitive at the highest level, I use Audevard products on a daily basis. In particular Ekygard+, which offers very complete gastric support, ideal for sensitive horses, and Ekyflex Arthro EVO, which helps to protect their joints longer term.
Balsamic Air is an essential product at competitions. You can't always control the environment (dust, poorer quality hay, etc.) - Balsamic Air is the first choice when the environment is unstable, as it ensures optimum respiratory comfort.