Gastra-FX™ Helps Maintain A Healthy Intestinal Tract Ingredients: Marshmallow Root, Slippery Elm, Licorice Root, Ginger Root Serving: Give 30 ml (1 oz) twice daily and 60 ml (2 oz) prior to exercise or event. Syringe directly into mouth for best results. Available in 1L / 1Q and 4L / 1Gal sizes. CAUTION: Oral use only. Shake well before use. Not recommended for mares in foal.