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An evening tonic for restless sleep and a mind that won't quiet down — fermented longan, the 'dragon eye' fruit long used in TCM to calm without sedating.
Classical TCM herb for restless sleep and an overactive mind.
Nourishes the heart and spleen systems linked to worry and rest.
Fewer overnight dips that wake you before morning.
One vial in the evening — a botanical full stop to the day.

Classical TCM herb nourishing the heart and spleen for calm and rest.

A gentle fermentation base that carries the fruit's active compounds.

A traditional pairing herb, long used alongside longan for restful sleep.

An adaptogenic berry traditionally used to steady an overactive mind.
In the herbal traditions of southern China and Southeast Asia, the longan — a small fruit with a dark seed at its centre, earning it the name 'dragon eye' — has long been the fruit reached for when the mind won't settle. Classical TCM describes it as nourishing to the heart and spleen, the systems traditionally linked to sleep and mental stamina. We ferment longan into a gentle evening vinegar, dosed for a wind-down ritual that calms without sedating — a small cue to your body that the day is closing.
Snap open one 10 mL vial.
Stir into a small glass of warm water.
Take in the evening, as you wind down.
Nightly, for 1–3 months.
Traditional botanicals, measured to a clinical dose — the gentlest way to bring your body back into balance.
— The Arka Lab