In the Chinese Pharmacopoeia Eucommia leaves are usually chosen to be harvested in the summer or fall for their therapeutic effects, treating conditions such as insufficiency of the liver and kidneys, and lumbar and knee pain and weakness.
Eucommia leaf is a Chinese herbal medicine that uses the dried leaves of the plant Eucommia, family Eucommiaceae. Since the efficacy of this medicine is mainly to tonify the liver and kidneys and strengthen the muscles and bones, it treats mainly various symptoms caused by deficiency of the liver and kidneys, including lumbar and knee soreness, weakness of the muscles and bones, dizziness and ringing in the ears, insomnia and excessive sleepiness, forgetfulness, and lack of mental energy.
When used medicinally, Eucommia leaves are usually harvested in summer and fall when the branches and leaves are in full bloom, and then dried in the sun or at low temperature.
The adverse effects and contraindications of eucommia leaf are not clear, and the drug should be used under the guidance of a doctor.