No studies have shown that chasteberry can lower heart rate. The drug’s efficacious effects also do not correspond to lowering the heart rate, so it is generally believed that the drug does not lower the heart rate.
Chasteberry is the dried mature fruit of the plant Chasteberry, family Mulleinaceae. Its flavor is sweet, bitter and cool in nature. It belongs to the liver and kidney meridians. It has the effect of nourishing the liver and kidney, brightening the eyes and darkening the hair.
This drug is often used for Yin deficiency of the liver and kidney, lumbar and knee pain, dizziness and tinnitus, premature whitening of hair, Yin deficiency and internal heat, bone vapor and tidal heat (heat seems to emanate from the inside of the bones and is as regular as the tides), spermatorrhea and night sweating (sweating abnormally after falling asleep, and sweating stops after waking up), and darkening of the eyes and darkening of the eyes. The adverse effects of the drug are not clear. However, it is cold in nature, so it should not be taken by those who normally have cold spleen and stomach, loose stools and deficiency of kidney yang.
Chasteberry should be used after identification by a professional Chinese medicine practitioner, and should not be used blindly on its own to avoid aggravating the condition or causing adverse reactions.