Gastrazone is a dietary and nutritional supplement that can be contributed to the maintenance of normal gut function in horses,

Containing per litre - thiamine hydrochloride (vitamin b1) - 2,350ml, 

Directions for use - as a daily routine mix thoroughly into the feed, horses between 400kg - 500kg give directly into the feed daily amount of 100ml morning and night for 7 days, then reduce to 50ml morning and night.