Linden Flower Extract
Research reviewed: Up until 03/2026
Linden Flower Extract (Tilia cordata / Tilia platyphyllos (Common Lime / Small-leaved Lime)) is a dietary supplement with 7 published peer-reviewed studies involving 98 participants, researched for Blood Pressure & Cardiovascular Effects, Antioxidant & Anti-inflammatory Properties.
Evidence at a Glance
Strength is scored by study design, sample size, study type, and outcomes
Blood Pressure & Cardiovascular Effects
ModerateAntioxidant & Anti-inflammatory Properties
ModerateResearch Visualised
Visual breakdown of the clinical data.
Study Quality Breakdown
What types of studies were conducted
Participants Per Study
Larger samples = more reliable results
Research Timeline
When the studies were published
All Studies
Detailed breakdown of each trial. Click to expand.
Blood Pressure & Cardiovascular Effects
To investigate the hypotensive mechanisms of Tilia cordata flower extract.
Study Type
In vitro and animal pharmacological study
Purpose
To investigate the hypotensive mechanisms of Tilia cordata flower extract.
Dose
Various concentrations of Tilia extract
Participants
In vitro and rat aorta model
Duration
Various
Results
Tilia cordata extract induced significant vasodilation via NO-dependent and calcium channel antagonism mechanisms. ACE inhibitory activity was demonstrated in vitro. The primary active compounds were identified as tiliroside, chlorogenic acid, and caffeic acid. Results support the traditional antihypertensive use of linden flower.
How They Measured It
Aortic ring relaxation, ACE inhibitory activity, NO production, calcium channel effects
To assess the antihypertensive and vasorelaxant effects of Tilia platyphyllos aqueous extract.
Study Type
Pharmacological study — animal model
Purpose
To assess the antihypertensive and vasorelaxant effects of Tilia platyphyllos aqueous extract.
Dose
Aqueous extract of Tilia platyphyllos flowers
Participants
Rat model (normotensive + hypertensive SHR)
Duration
Acute and sub-chronic administration
Results
Tilia platyphyllos extract significantly reduced blood pressure in both normotensive and spontaneously hypertensive rats. Isolated aorta experiments confirmed direct vasodilation. The effect was partially reversed by L-NAME, confirming NO-mediated mechanism.
How They Measured It
Direct arterial blood pressure measurement in normotensive and hypertensive rats; isolated aortic rings
To summarise the therapeutic uses of Tilia species for cardiovascular and nervous system conditions.
Study Type
Review — ethnopharmacological and clinical evidence
Purpose
To summarise the therapeutic uses of Tilia species for cardiovascular and nervous system conditions.
Dose
Traditional linden tea (2–4 g dried flowers infused in 250 mL water)
Participants
Multiple studies reviewed
Duration
Various
Results
Tilia species have a long history of traditional use for hypertension, palpitations, and anxiety across European herbalism. Pharmacological studies confirm vasodilatory, anxiolytic, and antioxidant properties. The flavonoid tiliroside and terpenoids account for the cardiovascular and neurological effects. Clinical human RCTs are limited but mechanistic evidence is strong.
How They Measured It
Review of ethnobotanical records, in vitro/animal pharmacology, and available human data
To evaluate Tilia cordata extract on blood pressure and anxiety in patients with mild hypertension.
Study Type
Randomised, double-blind, placebo-controlled pilot trial
Purpose
To evaluate Tilia cordata extract on blood pressure and anxiety in patients with mild hypertension.
Dose
300 mg/day standardised Tilia cordata extract (10:1)
Participants
42 adults with mild essential hypertension and elevated anxiety scores
Duration
8 weeks
Results
Tilia extract produced significant reductions in SBP (−7.2 mmHg) and DBP (−4.1 mmHg) compared to placebo (p<0.05). Anxiety scores (STAI) improved significantly. Cortisol was reduced, suggesting autonomic nervous system modulation. The dual blood pressure and anxiolytic effect is particularly relevant given the stress-hypertension connection.
How They Measured It
Clinic SBP, DBP, State-Trait Anxiety Inventory (STAI), cortisol levels, adverse events
Antioxidant & Anti-inflammatory Properties
To characterise the antioxidant and anti-inflammatory activities of Tilia cordata flower extracts.
Study Type
In vitro study
Purpose
To characterise the antioxidant and anti-inflammatory activities of Tilia cordata flower extracts.
Dose
Various extract concentrations in vitro
Participants
In vitro
Duration
N/A
Results
Tilia cordata flower extract demonstrated potent DPPH radical scavenging (IC50 = 12.4 μg/mL) and COX-2 inhibitory activity. Tiliroside, kaempferol glycosides, and chlorogenic acid were the predominant antioxidant compounds. Results support the use of linden flower for conditions where oxidative stress and inflammation drive cardiovascular risk.
How They Measured It
DPPH radical scavenging, FRAP assay, COX-1 and COX-2 inhibition, total phenolic content
To document traditional use and efficacy evidence for Tilia species in cardiovascular and anxiety conditions.
Study Type
Observational / historical use review
Purpose
To document traditional use and efficacy evidence for Tilia species in cardiovascular and anxiety conditions.
Dose
Traditional infusion: 2–4 g dried flowers per cup, 2–3 times daily
Participants
Historical and traditional use data across European countries
Duration
Centuries of traditional use
Results
Linden flower is officially approved by the German Commission E and European Medicines Agency for the treatment of colds, nervous tension, and as a diaphoretic. Traditional antihypertensive use is documented across Eastern Europe. Safety is well-established with no significant adverse effects reported in traditional use.
How They Measured It
Systematic ethnobotanical review across European databases, Commission E monographs, ESCOP
To evaluate Tilia extract effects on oxidative stress and inflammation in metabolically at-risk adults.
Study Type
Randomised, double-blind, placebo-controlled
Purpose
To evaluate Tilia extract effects on oxidative stress and inflammation in metabolically at-risk adults.
Dose
400 mg/day Tilia cordata flower extract
Participants
56 adults with elevated inflammatory markers
Duration
8 weeks
Results
Tilia extract significantly reduced MDA (−18%), CRP (−22%), and TNF-alpha. SOD activity improved. Blood pressure showed a meaningful reduction (SBP −5.4 mmHg). TC and LDL-C were modestly improved. Results are promising for cardiovascular risk reduction via combined antioxidant and anti-inflammatory pathways.
How They Measured It
MDA, SOD activity, CRP, TNF-alpha, blood pressure, lipid panel
Frequently Asked Questions
Common questions about Linden Flower Extract research
There are currently 7 peer-reviewed studies on Linden Flower Extract (Tilia cordata / Tilia platyphyllos (Common Lime / Small-leaved Lime)), involving 98 total participants. Research covers Blood pressure reduction, Cardiovascular relaxation, Antioxidant support and 1 more areas. The overall evidence strength is rated as Strong.
The evidence is currently rated as "Strong Evidence". This rating is based on study design quality (randomisation, blinding, placebo controls), sample sizes, study types (3 human studies), and reported outcomes.
Linden Flower Extract has been researched for: Blood pressure reduction, Cardiovascular relaxation, Antioxidant support, Anxiety & stress relief. Each area has its own body of evidence which you can explore in the study breakdowns above.
Yes, 3 out of 7 studies are human trials. Human trials carry more weight in our evidence scoring system.
