Wild cherry bark preparations can cause sedation, especially if recommended dosage is exceeded.
Cotton root bark has not been identified as producing side effects.
None known.
Not to be taken for an extended period of time. A doctor should be consulted for persistent cough or digestive problems.
Pregnant and lactating women should consult with a medical practitioner before using cramp bark. Considered safe for both short- and long-term use, no known side effects.
Safe in recommended dosages. Exceeded dosage: mild stomach upset or constipation.
Should be used in consultation with a physician, particularly if taking blood pressure medication. No reported interactions. There are no studies of interactions with Western drugs.
Encomia bark has a long history of use with no substantial reported problems.
Eucommia bark has a long history of use with no substantial reported problems.
Some sources state that the berries of cramp bark are toxic and should not be eaten.
Mild side effects: stomach upset, sweating, and diarrhea. Large doses: changes in breathing, dilation of blood vessels, sleepiness, depression or convulsions. Excessive use: mouth ulcers, burning in the mouth.
May possibly interfere with drug or herb absorption so best to take the bark several hours before or after other medicants. No reported negative interactions with pharmaceuticals as of 2002.
Manchurian cherry tree