It's MUCH cheaper. GAS is $179.99 for 20 lbs while OHS is $34.95 for 20 lbs. I have noticed so much of a difference in his coat and feet than before. I get compliments all the time on his coat. And his feet were described as "crumbly" by the farrier before and he would pull shoes often. Now I don't remember the last time a shoe was pulled. I don't see why it's not safe. It's just flax, yeast, and oats along with vitamins in their natural forms. I give Ed 2 oz daily. In a short while I'm thinking about switching my broodmare who is currently in foal to it with the same dosage.