It is known that bitter cattail contains a glycoside toxin, which is not easy to destroy and decompose by heat, and may lead to food poisoning after consumption. Bitter bushes have a very bitter taste, about half an hour after consumption, the patient feels dizziness, rapid heartbeat, nausea, vomiting, accompanied by severe diarrhea. For glycoside toxin poisoning, there is no effective treatment drugs, mainly through emetic diuretic and symptomatic treatment to relieve.

Bitter bushels and sweet bushels are not very distinguishable in appearance, mainly with the tip of the tongue before eating whether there is a bitter taste, such as a bitter taste can not be eaten.

The bitter and sweet bushes are not easy to distinguish from each other in appearance.