Plant Comparison

Tea vs Red Clover

A side-by-side comparison of two medicinal plants — every documented constituent, action, use, safety note and cited source, assembled automatically from the Omnia Sana database.

First plant
Second plant
Show:
Plant ATeaCamellia sinensisTheaceaeFull monograph →
Plant BRed CloverTrifolium pratenseFabaceaeFull monograph →

At a glance

Tea and Red Clover: they share 8 indicated uses (arthritis / joint pain, blood sugar / diabetes support, cancer (anticancer research), …); 6 pharmacological actions in common.

TeaRed Clover
Constituents32
Pharmacological actions610
Indicated uses1116
Safety notes22
Cited sources2144
Indicated uses
Only Tea
Infection (general)MemoryMetabolic support
Shared (8)
Arthritis / joint painBlood sugar / diabetes supportCancer (anticancer research)Cardiovascular / heart healthCognitive functionInflammation (general)Skin irritationWounds
Only Red Clover
BronchitisCoughMenstrual crampsMuscle spasmRespiratory supportMenopauseHot flashesHigh cholesterol
Pharmacological actions
Only Tea
none
Shared (6)
Anti-inflammatoryAnticancer (preclinical)Antidiabetic (blood-sugar lowering)AntimicrobialAntioxidantNeuroprotective / cognition support
Only Red Clover
AntispasmodicExpectorantLipid-loweringVulnerary (wound healing)

Evidence face-off — shared uses

ConditionTeaRed CloverVerdict
Arthritis / joint pain1/105/10Stronger for Red Clover
Blood sugar / diabetes support1/102/10Comparable evidence
Cancer (anticancer research)8/107/10Comparable evidence
Cardiovascular / heart health1/109/10Stronger for Red Clover
Cognitive function1/108/10Stronger for Red Clover
Inflammation (general)1/105/10Stronger for Red Clover
Skin irritation1/105/10Stronger for Red Clover
Wounds1/107/10Stronger for Red Clover

Evidence scores (1–10) are computed from the tier of each cited source. “Comparable” means the two scores are within one point. Follow a score to its detailed sources.

Key Constituents

Catechins (EGCG, ECG) and polyphenols[1, 15]

Principal antioxidant polyphenols, most concentrated in minimally oxidised green tea; epigallocatechin gallate (EGCG) is the best studied.

CatechinsPhenolic compounds
Caffeine and theanine[1]

Caffeine gives tea its mild stimulant effect; L-theanine, a unique amino acid, is associated with calm alertness and modulates caffeine's effects.

Caffeine
Theaflavins and thearubigins[15]

Oxidative polymerisation products of catechins formed during black tea processing, contributing to black tea's colour and its own antioxidant profile.

Isoflavones (formononetin, biochanin A, daidzein, genistein)[14]

Phytoestrogenic isoflavones responsible for the plant's estrogenic and cardiovascular research interest; one of the richest known plant sources.

Flavonoids
Coumarins[40]

Contribute mild anticoagulant activity; relevant to the plant's caution around blood-thinning medication.

Coumarins

Pharmacological Actions

Anti-inflammatory[15]
Anticancer (preclinical)[4, 5, 9, 15]
Antidiabetic (blood-sugar lowering)[15]
Antimicrobial[8, 11, 12, 15]
Antioxidant[4, 6, 10, 15]
Neuroprotective / cognition support[6, 15]
Anti-inflammatory[4, 14, 17, 22, 28, 33, 34, 40, 41]
Antioxidant[4, 6, 14, 16, 17, 22, 28, 29, 40, 41]
Antispasmodic[8, 14, 40, 41]

Antispasmodic (cramp easing)

Expectorant[14, 40, 41]
Lipid-lowering[5, 11, 13]
Anticancer (preclinical)[16, 18, 19, 20, 21, 35, 36, 37]
Neuroprotective / cognition support[23, 30, 31, 32]
Antidiabetic (blood-sugar lowering)[24, 25, 38]
Antimicrobial[17, 27]
Vulnerary (wound healing)[17, 39]

Traditional & Indicated Uses

Arthritis / joint pain[15]Traditional · 1/10

inferred from anti-inflammatory action

Evidence: 1
Label: Arthritis / joint pain
Blood sugar / diabetes support[15, 17]Traditional · 1/10

inferred from antidiabetic action

Evidence: 1
Label: Blood sugar / diabetes support
Cancer (anticancer research)[5, 9]Good · 8/10

inferred from anticancer action

Evidence: 8
Label: Cancer (anticancer research)
Cardiovascular / heart health[15, 17]Traditional · 1/10
Evidence: 1
Label: Cardiovascular / heart health
Cognitive function[15, 18]Traditional · 1/10

inferred from neuroprotective action

Evidence: 1
Label: Cognitive function
Infection (general)[15]Traditional · 1/10

inferred from antimicrobial action

Evidence: 1
Label: Infection (general)
Inflammation (general)[15]Traditional · 1/10

inferred from anti-inflammatory action

Evidence: 1
Label: Inflammation (general)
Memory[15, 18]Traditional · 1/10

inferred from neuroprotective action

Evidence: 1
Label: Memory
Metabolic support[15, 17]Traditional · 1/10
Evidence: 1
Label: Metabolic support
Skin irritation[15]Traditional · 1/10

inferred from anti-inflammatory action

Evidence: 1
Label: Skin irritation
Wounds[15]Traditional · 1/10

inferred from antimicrobial action

Evidence: 1
Label: Wounds
Arthritis / joint pain[14, 34, 40, 41]Moderate · 5/10

inferred from anti-inflammatory action

Evidence: 5
Label: Arthritis / joint pain
Bronchitis[14, 40, 41]Moderate · 5/10

inferred from expectorant action

Evidence: 5
Label: Bronchitis
Cardiovascular / heart health[2, 10, 13, 14, 16, 33, 40, 41]Strong · 9/10
Evidence: 9
Label: Cardiovascular / heart health
Cough[14, 40, 41]Moderate · 5/10

inferred from expectorant action

Evidence: 5
Label: Cough
Inflammation (general)[14, 28, 40, 41]Moderate · 5/10

inferred from anti-inflammatory action

Evidence: 5
Label: Inflammation (general)
Menstrual cramps[8, 14, 40, 41]Moderate · 5/10
Evidence: 5
Label: Menstrual cramps
Muscle spasm[8, 14, 40, 41]Moderate · 5/10

inferred from antispasmodic action

Evidence: 5
Label: Muscle spasm
Respiratory support[14, 40, 41]Moderate · 5/10

inferred from expectorant action

Evidence: 5
Label: Respiratory support
Skin irritation[7, 14, 40, 41]Moderate · 5/10

inferred from anti-inflammatory action

Evidence: 5
Label: Skin irritation
Menopause[1, 5, 11, 12, 15]Strong · 9/10
Evidence: 9
Label: Menopause
Hot flashes[1, 5, 11, 12]Strong · 9/10
Evidence: 9
Label: Hot flashes
High cholesterol[5, 11, 13]Strong · 9/10
Evidence: 9
Label: High cholesterol
Cancer (anticancer research)[16, 18, 19, 20, 21, 35, 36, 37]Good · 7/10

inferred from anticancer action

Evidence: 7
Label: Cancer (anticancer research)
Blood sugar / diabetes support[24, 25, 38]Traditional · 2/10
Evidence: 2
Label: Blood sugar / diabetes support
Cognitive function[23, 30, 31, 32]Good · 8/10

inferred from neuroprotective action

Evidence: 8
Label: Cognitive function
Wounds[17, 39]Good · 7/10

inferred from vulnerary action

Evidence: 7
Label: Wounds

Safety, Cautions & Contraindications

Safety note[15, 17, 18]Serious

Generally safe in moderate consumption. High caffeine intake may cause insomnia, anxiety, palpitations, or dependence. Large amounts of green tea extract supplements may be hepatotoxic (rare). May reduce iron absorption if consumed with meals. Avoid very high supplement doses during pregnancy.

Safety note[15, 17, 18, 19]Caution

Duke (2002) rates tea (Camellia sinensis) as ++ and notes anti-aggregant, antioxidant, anticariogenic, and antibacterial activities at the experimental level (score 1). The catechins (EGCG, ECG) and polyphenols are responsible for the antioxidant and anticancer properties under research investigation. Duke notes that green tea preserves more polyphenols than black tea due to less oxidation. Regular tea consumption is associated with reduced cardiovascular risk. Excess consumption (>10 cups daily) may cause fluoride-related bone changes. Caffeine content is relevant for sleep disturbance, anxiety, and interactions with cardiovascular medications (Duke, 2002).

Safety note[14, 40, 41]Caution

Generally safe in normal dietary amounts. Isoflavones are phytoestrogens — exercise caution in oestrogen-receptor-positive breast cancer patients or those taking hormone therapies. May interact with warfarin (antiplatelet activity). Avoid in pregnancy and breastfeeding. Well tolerated in most adults.

Safety note[14, 40, 41, 42]Caution

Duke (2002) rates red clover as +++ and provides clinical evidence (score 2) for estrogenic activity — the plant is one of the richest plant sources of isoflavones (formononetin, biochanin A, daidzein, genistein). Clinical applications include menopausal symptom relief, osteoporosis prevention, and cardiovascular protection in peri-menopausal women. Dose: standardized extract providing 40–160 mg isoflavones daily. Duke cautions that due to strong estrogenic activity, red clover is not recommended in estrogen-dependent cancers (breast, uterine) or alongside hormone replacement therapy without medical supervision. Anti-coagulant coumarins are also present (Duke, 2002).

External Ids

Gbif: 3189635
Wikidata: Q101815
Gbif: 8324121
Wikidata: Q156635

Botanical Description

Evergreen shrub or small tree with glossy, dark green, leathery, finely toothed leaves. Small, fragrant, white flowers with a prominent central boss of yellow stamens are borne singly or in small clusters in the leaf axils. Commercial tea is made from the young leaves and unopened leaf buds ('sprouts'), processed differently to yield green, black, white or oolong tea from the same species.[15]

Height: 1-9 m (kept pruned to 1-1.5 m under cultivation)
Habit: Evergreen shrub or small tree, usually kept pruned as a shrub
Leaves: Glossy, dark green, leathery, finely toothed
Flowers: Small, fragrant, white, with a prominent boss of yellow stamens
Stem: Woody, branching, evergreen
Root: Deep taproot
Fruit: Woody capsule containing a few large seeds
Flowering Period: Autumn to winter

Short-lived perennial herb with trifoliate leaves, each leaflet oval and often marked with a pale chevron, arising from a spreading, slightly hairy stem. Dense, rounded, pink to magenta flower heads are borne at the stem tips.[40]

Height: 20-60 cm
Habit: Short-lived perennial herb, spreading via a branching taproot
Leaves: Trifoliate, each leaflet oval with a pale chevron marking, slightly hairy
Flowers: Dense, rounded heads of small pink to magenta pea-like flowers
Stem: Slightly hairy, branching, spreading
Root: Branching taproot with nitrogen-fixing root nodules
Fruit: Small pod containing 1-2 seeds, enclosed within the dried flower head
Flowering Period: May-September

Habitat

Native to the subtropical and tropical forests and hillsides of East and South Asia (China, India, Myanmar); cultivated extensively across Asia, Africa and elsewhere on well-drained, acidic upland soils.[15]

Grows in meadows, pastures, roadsides and grassy waste ground; native to Europe, western Asia and North Africa and widely naturalised and cultivated as a forage crop elsewhere.[40]

Harvesting

The youngest leaves and unopened leaf buds ('flush') are hand- or machine-picked repeatedly through the growing season; how the fresh leaf is subsequently processed (withered, rolled, oxidised, fixed and dried) determines whether it becomes green, black, white or oolong tea.[15]

Parts: Leaf, Young sprouts
Season: Repeated flushes through the growing season

The flowering heads are picked at full bloom in summer and dried quickly in a warm, shaded, airy place to preserve isoflavone content and colour.[40]

Parts: Flower, Leaf
Season: Summer, at full bloom

Traditional Uses

Tea has an ancient East Asian tradition as both a beverage and a medicinal tonic, used for alertness, digestion and general wellbeing; green tea in particular has a long-standing reputation, now widely studied, as an antioxidant, cardiometabolic and cognitive-support beverage.[1, 15]

Red clover flower has a long folk tradition as a blood-purifying and expectorant remedy for coughs and skin complaints, and more recently has become one of the most studied herbal sources of isoflavone phytoestrogens, researched for menopausal symptom relief and cardiovascular and bone support.[14, 40, 41]

Preparations

Infusion (green tea)[15]

Young leaf, minimally oxidised, infused in hot water; the least-processed and most-studied form for antioxidant polyphenol content.

Standardised extract[15]

Concentrated leaf extract standardised to catechin (e.g. EGCG) content, taken as capsules; used in some clinical studies, though high-dose extracts carry rare hepatotoxicity concerns.

Infusion (flower)[40]

Dried flower heads infused in hot water as a traditional tea for coughs and as a general tonic.

Standardized isoflavone extract[14]

Standardized isoflavone extract in tablet form, the form used in most menopause-related clinical research.

Dosage

Infusion[16]

The EU herbal monograph on green tea leaf (Camelliae sinensis non fermentatum folium) gives, for adults and elderly, 1.8-2.2 g of the whole or comminuted leaf in 100-150 mL of boiling water as an infusion, 3-5 times daily; a powdered herbal substance at 390 mg three times daily (up to 5 if necessary) is also listed. Contraindicated in gastric and duodenal ulcers, cardiovascular disorders such as hypertension and arrhythmia, and hyperthyroidism. Not recommended under 18 years. Educational reference only, not a prescription.

Standardized extract[14]

Clinical research commonly uses around 40-80 mg isoflavones daily. Educational reference only, not a prescription.

References

REF-0755, REF-0756, REF-0757, REF-1960, REF-1961, REF-1962, REF-1963, REF-1964, REF-1965, REF-1966, REF-1967, REF-1968, REF-1969, REF-1970
REF-1104, REF-1105, REF-1106, REF-1107, REF-1108, REF-1109, REF-1110, REF-1111, REF-1112, REF-1113, REF-2344, REF-2345, REF-2346, REF-0013, REF-2347, REF-2889, REF-2890, REF-2891, REF-2892, REF-2893, REF-2894, REF-2895, REF-2896, REF-2897, REF-2898, REF-2899, REF-2900, REF-2923, REF-2924, REF-2925, REF-2926, REF-2927, REF-2928, REF-2929, REF-2930, REF-2931, REF-2932, REF-2933, REF-2934

Drug Class Interactions

Safety note[20, 21]Caution
Drug Class: antihypertensives
Mechanism: Green tea catechins block an intestinal uptake transporter (OATP1A2) that some blood-pressure medicines rely on for absorption. In a controlled study, drinking green tea cut blood levels of the beta-blocker nadolol by about 85% and blunted its blood-pressure-lowering effect. If you take nadolol (or other OATP-transported medicines), separate green tea from the dose by several hours and keep intake consistent; watch that your blood pressure stays controlled.
Reviewed By: Omnia Sana (owner-authorized)
Reviewed Date: 2026-07-03
Safety note[43, 44]Caution
Drug Class: hormonal-therapies
Mechanism: Red clover is rich in isoflavones that act like weak oestrogens; its safety alongside hormone medicines (such as the contraceptive pill, HRT, or breast-cancer hormone treatments like tamoxifen) or in hormone-sensitive conditions is not established, so combined use warrants caution and medical advice.
Reviewed By: Omnia Sana (owner-authorized)
Reviewed Date: 2026-07-03

Lookalikes Review

Outcome: none-known
Reviewed By: Omnia Sana (owner-authorized)
Reviewed Date: 2026-07-07
Outcome: none-known
Reviewed By: Omnia Sana (owner-authorized)
Reviewed Date: 2026-07-07

References & Sources

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    https://doi.org/10.2174/1871523015666160915154443
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  15. Chacko, S.M. et al (2010) 'Beneficial effects of green tea: a literature review'. Traditional / reference
    https://scholar.google.com/scholar?q=Beneficial%20effects%20of%20green%20tea%3A%20a%20literature%20review
  16. European Medicines Agency (HMPC) (2013) 'Community herbal monograph on Camellia sinensis (L.) Kuntze, non fermentatum folium'. Available at: https://www.ema.europa.eu/en/documents/herbal-monograph/final-community-herbal-monograph-camellia-sinensis-l-kuntze-non-fermentatum-folium_en.pdf Traditional / reference
    https://www.ema.europa.eu/en/documents/herbal-monograph/final-community-herbal-monograph-camellia-sinensis-l-kuntze-non-fermentatum-folium_en.pdf
  17. Drake, V.J (2015) 'Tea catechins and cardiovascular disease risk', 74(1), pp. 39--46. Traditional / reference
    https://scholar.google.com/scholar?q=Tea%20catechins%20and%20cardiovascular%20disease%20risk
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    https://scholar.google.com/scholar?q=L-theanine%2C%20a%20natural%20constituent%20in%20tea%2C%20and%20its%20effect%20on%20mental%20state
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  1. Kanadys, W., Baranska, A., Blaszczuk, A., Polz-Dacewicz, M. and others (2021) 'Evaluation of Clinical Meaningfulness of Red Clover (Trifolium pratense L.) Extract to Relieve Hot Flushes and Menopausal Symptoms in Peri- and Post-Menopausal Women: A Systematic Review and Meta-Analysis of Randomized Controlled Trials', Nutrients, 13(4), pp. 1258. doi:10.3390/nu13041258 Meta-analysis / review
    https://doi.org/10.3390/nu13041258
  2. Kanadys, W., Baranska, A., Jedrych, M., Religioni, U. and others (2019) 'Effects of red clover (Trifolium pratense) isoflavones on the lipid profile of perimenopausal and postmenopausal women-A systematic review and meta-analysis', Maturitas, 132, pp. 7-16. doi:10.1016/j.maturitas.2019.11.001 Meta-analysis / review
    https://doi.org/10.1016/j.maturitas.2019.11.001
  3. Yokoyama, S.I., Kodera, M., Hirai, A., Nakada, M. and others (2020) 'Red Clover (Trifolium pratense L.) Sprout Prevents Metabolic Syndrome', Journal of Nutritional Science and Vitaminology, 66(1), pp. 48-53. doi:10.3177/jnsv.66.48 Preclinical
    https://doi.org/10.3177/jnsv.66.48
  4. Gosciniak, A., Szulc, P., Zielewicz, W., Walkowiak, J. and others (2023) 'Multidirectional Effects of Red Clover (Trifolium pratense L.) in Support of Menopause Therapy', Molecules, 28(13), pp. 5178. doi:10.3390/molecules28135178 Meta-analysis / review
    https://doi.org/10.3390/molecules28135178
  5. Booth, N.L., Piersen, C.E., Banuvar, S., Geller, S.E. and others (2006) 'Clinical studies of red clover (Trifolium pratense) dietary supplements in menopause: a literature review', Menopause, 13(2), pp. 251-264. doi:10.1097/01.gme.0000198297.40269.f7 Meta-analysis / review
    https://doi.org/10.1097/01.gme.0000198297.40269.f7
  6. Oza, M.J. and Kulkarni, Y.A (2020) 'Trifolium pratense (Red Clover) Improves SIRT1 Expression and Glycogen Content in High Fat Diet-Streptozotocin Induced Type 2 Diabetes in Rats', Chemistry & Biodiversity, 17(4), pp. e2000019. doi:10.1002/cbdv.202000019 Preclinical
    https://doi.org/10.1002/cbdv.202000019
  7. Circosta, C., De Pasquale, R., Palumbo, D.R., Samperi, S. and others (2006) 'Effects of isoflavones from red clover (Trifolium pratense) on skin changes induced by ovariectomy in rats', Phytotherapy Research, 20(12), pp. 1096-1099. doi:10.1002/ptr.2017 Preclinical
    https://doi.org/10.1002/ptr.2017
  8. Brandli, A., Simpson, J.S. and Ventura, S (2010) 'Isoflavones isolated from red clover (Trifolium pratense) inhibit smooth muscle contraction of the isolated rat prostate gland', Phytomedicine, 17(11), pp. 895-901. doi:10.1016/j.phymed.2010.05.006 Preclinical
    https://doi.org/10.1016/j.phymed.2010.05.006
  9. Burdette, J.E., Liu, J., Lantvit, D., Lim, E. and others (2002) 'Trifolium pratense (red clover) exhibits estrogenic effects in vivo in ovariectomized Sprague-Dawley rats', The Journal of Nutrition, 132(1), pp. 27-30. doi:10.1093/jn/132.1.27 Preclinical
    https://doi.org/10.1093/jn/132.1.27
  10. Jiang, Y.B. and Yang, Y.R (2016) 'Trifolium pratense isoflavones improve pulmonary vascular remodelling in broiler chickens', Journal of Animal Physiology and Animal Nutrition, 100(6), pp. 1159-1168. doi:10.1111/jpn.12424 Preclinical
    https://doi.org/10.1111/jpn.12424
  11. Yigit, E. and Unsal, S (2024) 'Isoflavones obtained from red clover improve both dyslipidemia and menopausal symptoms in menopausal women: a prospective randomized placebo-controlled trial', Climacteric, 27(6), pp. 548-554. doi:10.1080/13697137.2024.2393121 Randomized trial
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Generated automatically from the Omnia Sana plant database and its cited sources. For educational purposes only — not medical advice. Always consult a qualified practitioner before using medicinal plants.