I found that the powder was very messy and smelly. My horse had developed heaves so I was looking for some respiratory help. My horse didn't like it at all and I ended up mixing it with some water and syringing it into her mouth. I used almost the whole bag diligently, but noticed no difference or improvements in her coughing or breathing. I will not be reordering.

Horse would not eat it. No idea if it works.

My horse developed hives on his stomach, neck, under belly, etc within a week of slowly introducing it. A few days after I discontinued it, the hives disappeared

I personally love spirulina and take it myself, but it made my horse as high as a kite. I was hopeful this would be good for us and unfortunately that is not the case. I was so sure that it was going to be a nice addition to our supplements that I ordered 2 packages and I’m now looking for someone to take them ☹️ Sorry I couldn’t write a better review, because I love the product…it just didn’t work for us