It wouldn't be the first herb I'd think of to use as a nervine, or for cardiovascular issues - Hawthorn would come to mind instead - maybe because Mistletoe is very rare in Ireland. Also, even though birds can eat the berries, they are poisonous to humans. I saw it once, in an old garden, and it was a lovely surprise. Almost invisible in the shadows, and yet somehow luminous.
Mistletoe came to mind today because I read this...
''The Druids were priests and magicians, curing by magnetism and charging amulets with their fluidic influence. Their universal remedies were mistletoe and serpent's eggs, because these substances attract the astral light in a special manner. The solemnity with which the mistletoe was cut down drew upon this plant the popular confidence, and rendered it powerfully magnetic...The progress of magentism will someday reveal to us the absorbing properties of mistletoe. We shall then understand the secret of those spongy growths which drew the unused virtues of plants and became surcharged with tinctures and savors. '' ~ Eliphas Levi
He must have been refering to Druids from elsewhere as Ireland has neither mistletoe (generally) nor does it seem to have had serpents since forever.
Mistletoe is described as ''a fine old remedy'' used for nervous disorders, spasms, high blood pressure, and weak hearts. The dried leafy twigs are the part that is used. They should be collected in Spring. It can be taken as a homeopathic tincture - Viscus Album.
It is used for burn out, fatigue, and is said to contain anti-cancer proteins. It acts directly on the vagus nerve to calm the nervous system and heart.
In ayurveda Mistletoe is used as a nervine, antispasmodic and emmenagogue (so don't use during pregnancy). It's energy is heating and pungent.
Dosage - One cup of boiling water poured onto 1- 2 teasponns of the dried herb and left to infuse for 10 minutes x 3 times a day.