Calm Healthy Horses SOS

For acute problems remove the horse from ALL green, grass until he is back to normal, then gradually and carefully reintroduce grass again.
 
It is necessary to lower potassium intake by immediately removing from the horse’s diet:
short, green, growing grass
legumes like clover and lucerne
soy-based feeds and protein meals
molassed feeds
All of the above add to your horse’s potassium load and make it harder for his system to keep vital minerals in balance.

He will still be ingesting plenty of potassium (more than his daily requirement) from his 24/7 hay
 
When the grass is part or all of your horse’s diet and it is green!
When the hay isn’t ideal, meaning it is too ‘rich’ and still causing issues.
If you are renting grazing and don’t have control over grass intake.