Lavandula

Best for

Reduce daily stress

Proven benefit · 80 mg/day for 0–10 weeks · 2 meta-analyses , n=965

40 papers · 9 claims · 66 outcomes scored · 8 positive

Outcomes

What lavandula actually does, by outcome

Each row is one outcome with effect size, evidence base, the dose that worked in trials, and time to first effect. Magnitude tiers come from native-unit MCID where available, Cohen's d otherwise.

Outcome Effect size Evidence Dose Weeks Rank

Reduce daily stress Proven benefit

Everyday pressure stops running your nervous system hot.

6 meta-analyses n=965 80 mg 0–10 wk #1/41

28567231·29150713·38459484·34356287 +2 more

moderate

6 meta-analyses n=965 Meta-analyzed I²=96%

80 mg

0–10 wk

#1 /41

Fall asleep faster Likely benefit

Shrinks the gap between hitting the pillow and actually sleeping.

1 RCT n=100 — 1 wk #3/19

39775962

moderate

1 RCT n=100

—

1 wk

#3 /19

Lower day-to-day anxiety Likely modest benefit

The background hum of worry that colors everything gets quieter.

11 meta-analyses n=11k 3–80 mg 1–10 wk #1/48

37325306·27095995·29150713·31792285 +7 more

small

11 meta-analyses n=11k Meta-analyzed I²=94%

3–80 mg

1–10 wk

#1 /48

Ease anxiety in older adults Likely modest benefit

Quiets the health worries and body tension that build with age.

11 meta-analyses n=11k 3–80 mg 1–10 wk #1/45

27095995·29150713·31792285·33638614 +7 more

small

11 meta-analyses n=11k Meta-analyzed I²=93%

3–80 mg

1–10 wk

#1 /45

Reduce pre-competition anxiety Likely modest benefit

Quiets the overthinking that hijacks execution right before you compete.

11 meta-analyses n=11k 3–80 mg 1–10 wk #1/45

27095995·29150713·31792285·33638614 +7 more

small

11 meta-analyses n=11k Meta-analyzed I²=93%

3–80 mg

1–10 wk

#1 /45

Break the insomnia cycle Proven modest benefit

Quiets the nervous-system overdrive that keeps you wired at bedtime.

2 meta-analyses n=1.9k 80 mg 10 wk #1/14

29150713·33638614

small

2 meta-analyses n=1.9k Meta-analyzed I²=79%

80 mg

10 wk

#1 /14

Improve overall sleep quality Likely modest benefit

Deeper, less interrupted nights that leave you recharged by morning.

9 meta-analyses n=1.6k 55–80 other 1–10 wk #4/37

26023343·26133206·29150713·32308715 +5 more

small

9 meta-analyses n=1.6k Meta-analyzed I²=85%

55–80 other

1–10 wk

#4 /37

Increase deep, restorative sleep Faint early signal

More time in the sleep stages where your body does its heaviest repair.

2 RCTs n=68 — — #3/6

33441798·37098173

small

2 RCTs n=68

—

#3 /6

Reduce emotional overwhelm Not enough research

The background noise of worry, irritability, and low mood gets quieter.

1 study n=— 3 other 4 wk

27095995

—

1 study n=—

3 other

4 wk

—

Outcome	Effect	Evidence	Dose	Weeks	Rank
Reduce daily stress Proven benefit	moderate	6 meta-analyses n=965 Meta-analyzed	80 mg	0–10 wk	#1/41
Fall asleep faster Likely benefit	moderate	1 RCT n=100	—	1 wk	#3/19
Lower day-to-day anxiety Likely modest benefit	small	11 meta-analyses n=11k Meta-analyzed	3–80 mg	1–10 wk	#1/48
Ease anxiety in older adults Likely modest benefit	small	11 meta-analyses n=11k Meta-analyzed	3–80 mg	1–10 wk	#1/45
Reduce pre-competition anxiety Likely modest benefit	small	11 meta-analyses n=11k Meta-analyzed	3–80 mg	1–10 wk	#1/45
Break the insomnia cycle Proven modest benefit	small	2 meta-analyses n=1.9k Meta-analyzed	80 mg	10 wk	#1/14
Improve overall sleep quality Likely modest benefit	small	9 meta-analyses n=1.6k Meta-analyzed	55–80 other	1–10 wk	#4/37
Increase deep, restorative sleep Faint early signal	small	2 RCTs n=68	—	—	#3/6
Reduce emotional overwhelm Not enough research		1 study n=—	3 other	4 wk	—

Risk profile

Adverse events and known drug interactions

Safety events

increased heart rate requiring hospital admission severe

nausea mild

dry mouth mild

gastrointestinal disorder mild

headache mild

weight increased mild

acne mild

anxiety mild

Drug interactions

Midazolam moderate increases concentration

Drug:Ethinyl Estradiol moderate increases concentration

Drug:Levonorgestrel moderate increases concentration

Enrofloxacin moderate increases effect

Caffeine minor increases concentration

Ethinyl Estradiol / Levonorgestrel minor unknown

Sources

Generated August 14, 2026

Lavandula

What lavandula actually does, by outcome

Adverse events and known drug interactions

More evidence for Lavandula

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Best Supplements for Anxiety, Ranked by Clinical Evidence

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Sleep: evidence map across 37 supplements

Stress: evidence map across 46 supplements

Lavandula

More evidence for Lavandula

NewBest Supplements for Depression, Ranked by Clinical Evidence

NewBest Supplements to Increase Deep, Restorative Sleep (2026)

NewBest Supplements for Anxiety, Ranked by Clinical Evidence

NewBest Supplements for Daily Stress Relief, Ranked by Clinical Evidence

NewSleep: evidence map across 37 supplements

NewStress: evidence map across 46 supplements

Best Supplements for Depression, Ranked by Clinical Evidence

Best Supplements to Increase Deep, Restorative Sleep (2026)

Best Supplements for Anxiety, Ranked by Clinical Evidence

Best Supplements for Daily Stress Relief, Ranked by Clinical Evidence

Sleep: evidence map across 37 supplements

Stress: evidence map across 46 supplements