If your horse suddenly stops eating the feed, you can lower the dosage and divide the amount into smaller portions per day. You can try to temporarily mix the product with something your horse really likes to eat, like mash, or add a new type of feed with a different taste.
In case the horse still doesn’t want to eat the feed, you can stop temporarily for 10-14 days and then start building up again. It would be ideal to give the build-up dosage for about 10-12 days to bring the intestinal flora back in balance. After that you can go back to the normal dosage.