Ecklonia cava brown seaweed on a Jeju shore, the source material for Ecklo Sleep

Ecklonia cava, the Jeju brown seaweed behind Ecklo Sleep.

Ecklo Sleep is a water-extracted Jeju Ecklonia cava ingredient standardized to dieckol, a natural sleep aid studied by polysomnography for shorter sleep latency, more deep sleep and less waking after sleep onset.

At a glance

Ingredient specification

Brand nameEcklo Sleep^®
Ingredient nameEcklonia cava
Manufacturing methodWater extraction
Marker compoundDieckol
Recommended intake500 mg per day, as Ecklonia cava extract
OriginJeju, Korea

Functions & features

What Ecklo Sleep does

Improves sleep quality
Antioxidant

Ecklo Sleep is BK bio's branded sleep ingredient, made by water extraction of Ecklonia cava, a brown seaweed harvested around Jeju. Its activity is carried by the phlorotannin dieckol, which is used as the marker compound to standardize each batch. Alongside its effect on sleep, the extract is studied for antioxidant activity.

Human clinical trial

Clinical results

25.5 min

Reduction in wake after sleep onset (WASO) versus a 1.7-minute change in the placebo group.

p < 0.05

Significant reduction in sleep onset latency, alongside more Stage 3 (deep) sleep.

In a polysomnography trial conducted at the Seoul Sleep Center (Seoul National University), 24 adult men and women took 500 mg for one week. The extract significantly reduced sleep latency, increased Stage 3 sleep (the deepest sleep stage) and lowered wake after sleep onset. Safety was confirmed through one week of consumption and follow-up.

Efficacy results summary — phlorotannin group vs. placebo
Test	Phlorotannin group impact	Placebo change	Significance
Sleep Onset Latency (SOL)	Significant reduction	Negligible change	p < 0.05
Wake After Sleep Onset (WASO)	25.5 min reduction	1.7 min reduction	p = 0.045
Total Sleep Time (TST)	Increased duration	Baseline stability	p < 0.05
Sleep Efficiency	Global quality improvement	No change	Verified
RDI during supine REM	Stabilized respiration	Index increased	p = 0.035

Abbreviations: PSG (polysomnography), SOL (sleep onset latency), WASO (wake after sleep onset), TST (total sleep time), RDI (respiratory disturbance index). Note: results may vary by individual.

References

Patent & journal

PatentKR 10-1592251
JournalPhytotherapy Research, 2018, 32(4), 698–704.

Source botanical. Ecklo Sleep is drawn from Ecklonia cava (gamtae), a brown seaweed harvested around Jeju. Its activity is standardized to the phlorotannin dieckol, used as the marker compound for each batch.