HorseFirst Relax Me. HorseFirst Relax Me is a two way calming and settling supplement ideal for nervous, excitable and stressed horses. Relax Me combines magnesium, vitamin E and B group vitamins to help encourage a calmer, more relaxed horse. The Relax Me supplement is a unique blend of liquorice and probiotics that helps to settle the stomach and digestive track and also optimises gut health and absorption. Relax Me can help settle your horse and relieve nerves and excitability making them easier to train and calmer to ride. Read more… Contains no prohibited substances. 750g - approximately 30 servings. 2kg - approximately 80 servings.