These berries, incredibly useful for people with cardiovascular pathologies, require some caution in the application. For example, in post-stroke state , with bradycardia and lowered arterial pressure from taking berries it is better to refuse. And with other diseases of the heart and blood vessels, it's just not worth to abuse the fruits, limiting 1 glass a day, which is the norm in diabetes. Abuse of berries can also lead to kidney failure.
Although scarlet hawthorn berries do not have a sour taste, they can stimulate the production and secretion of bile, which is dangerous in acute gastrointestinal pathologies. Eating fruits on an empty stomach can provoke a spasm of the vessels and muscles of the body, an emetic reaction, and if after drinking fruits with cold water, there is a risk of painful intestinal colic.
Hawthorn has a pronounced sedative effect, due to which it is able to stabilize the CNS condition and improve sleep. But this property can be unsafe for people whose activities require a high concentration of attention. From the use of a small handful of berries there will be no harm, but from a glass and more there may be drowsiness.
Pregnant women and nursing mothers are allowed only light infusions and teas from the fruits of the plant.