Plant Comparison

Coffee (Arabica & Robusta) vs Cleavers

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
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Plant ACoffee (Arabica & Robusta)Coffea arabicaRubiaceaeFull monograph →
Plant BCleaversGalium aparineRubiaceaeFull monograph →

At a glance

Coffee (Arabica & Robusta) and Cleavers: both belong to the Rubiaceae family; 1 pharmacological action in common.

Coffee (Arabica & Robusta)Cleavers
Constituents33
Pharmacological actions26
Indicated uses49
Safety notes21
Cited sources1815
Indicated uses
Only Coffee (Arabica & Robusta)
Cardiovascular / heart healthCognitive functionMemoryMetabolic support
Shared (0)
none
Only Cleavers
BruisingCancer (anticancer research)EczemaInfection (general)Skin irritationSwelling / fluid retentionUrinary supportUrinary tract infection (UTI)Wounds
Pharmacological actions
Only Coffee (Arabica & Robusta)
Neuroprotective / cognition support
Shared (1)
Antioxidant
Only Cleavers
Anticancer (preclinical)AntimicrobialDiureticEmollient / skin-soothingVulnerary (wound healing)

Key Constituents

Caffeine[1]

The principal stimulant alkaloid, driving alertness and much of coffee's pharmacological activity.

Caffeine
Chlorogenic acids[1]

Major antioxidant polyphenols of the green and roasted bean, linked to metabolic and hypoglycaemic effects.

Chlorogenic acidPhenolic acids
Diterpenes (cafestol, kahweol)

Present in unfiltered coffee (e.g. French press, espresso); raise LDL cholesterol, unlike paper-filtered coffee where they are largely removed.

Iridoid glycosides (asperuloside)[6]

Characteristic Rubiaceae iridoids shared with related bedstraws, contributing to the plant's traditional activity.

Iridoid glycosidesGlycosides
Flavonoids and phenolic acids[6]

Antioxidant constituents supporting the plant's antimicrobial and wound-healing activity.

FlavonoidsPhenolic acids
Tannins

Astringent constituents contributing to the traditional topical use for skin and wounds.

Tannins

Pharmacological Actions

Antioxidant[1, 3, 5, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17]
Neuroprotective / cognition support[2, 9, 10, 11, 12, 13, 14, 15, 16, 17]
Anticancer (preclinical)[8, 10]
Antimicrobial[6, 12, 13, 14]
Antioxidant[6, 9, 12, 13, 14]
Diuretic[12, 13, 14]
Emollient / skin-soothing[12, 13, 14]
Vulnerary (wound healing)[6, 11, 12, 13, 14]

Traditional & Indicated Uses

Cardiovascular / heart health[6, 9, 10, 11, 12, 13, 14, 15, 16, 17]Strong · 9/10
Evidence: 9
Label: Cardiovascular / heart health
Cognitive function[9, 10, 11, 12, 13, 14, 15, 16, 17]Strong · 9/10

inferred from neuroprotective action

Evidence: 9
Label: Cognitive function
Memory[9, 10, 11, 12, 13, 14, 15, 16, 17]Strong · 9/10

inferred from neuroprotective action

Evidence: 9
Label: Memory
Metabolic support[1, 9, 10, 11, 12, 13, 14, 15, 16, 17]Strong · 9/10
Evidence: 9
Label: Metabolic support
Bruising[12, 13, 14]Traditional · 1/10

inferred from vulnerary action

Evidence: 1
Label: Bruising
Cancer (anticancer research)[8, 10]Traditional · 2/10

inferred from anticancer action

Evidence: 2
Label: Cancer (anticancer research)
Eczema[12, 13, 14]Traditional · 1/10

inferred from emollient action

Evidence: 1
Label: Eczema
Infection (general)[12, 13, 14]Traditional · 1/10

inferred from antimicrobial action

Evidence: 1
Label: Infection (general)
Skin irritation[12, 13, 14]Traditional · 1/10

inferred from emollient action

Evidence: 1
Label: Skin irritation
Swelling / fluid retention[12, 13, 14]Traditional · 1/10

inferred from diuretic action

Evidence: 1
Label: Swelling / fluid retention
Urinary support[12, 13, 14]Traditional · 1/10

inferred from diuretic action

Evidence: 1
Label: Urinary support
Urinary tract infection (UTI)[12, 13, 14]Traditional · 1/10

inferred from diuretic action

Evidence: 1
Label: Urinary tract infection (UTI)
Wounds[12, 13, 14]Traditional · 1/10

inferred from antimicrobial action

Evidence: 1
Label: Wounds

Safety, Cautions & Contraindications

Safety note[9, 10, 11, 12, 13, 14, 15, 16, 17]Caution

Caffeine is the primary psychoactive component; excessive intake (>400 mg/day in adults, >200 mg/day in pregnancy) can cause anxiety, insomnia, palpitations, and elevated blood pressure. Caffeine dependence and withdrawal (headaches, fatigue) are well documented. Individuals with anxiety disorders, arrhythmias, or hypertension should limit intake. Cafestol and kahweol in unfiltered coffee (e.g., French press, espresso) raise LDL cholesterol; paper-filtered coffee removes these compounds. During pregnancy, limit to <200 mg caffeine/day due to risk of foetal growth restriction. Coffee may interact with certain medications including thyroid hormones, levothyroxine, and some antibiotics (ciprofloxacin increases caffeine levels). Heartburn and gastro-oesophageal reflux are common side effects in sensitive individuals (EFSA, 2015; NIH, 2023).

Safety note[9, 10, 11, 12, 13, 14, 15, 16, 17, 18]Caution

Duke (2002) notes clinical evidence (score 2) for coffee as an adsorbent (activated charcoal use), astringent, bronchodilator, and gastric stimulant. A key safety concern: unfiltered (e.g., French press or boiled) coffee raises LDL cholesterol (hypercholesterolemic effect, score 2) due to diterpenes cafestol and kahweol. Filtered coffee does not carry this risk. Duke notes coffee's CNS stimulant, diuretic, and hepatoprotective properties, though excessive consumption is associated with increased anxiety, tachycardia, and hypertension. It is contraindicated in peptic ulcer disease due to gastric acid stimulation (Duke, 2002).

Safety note[12, 13, 14, 15]Caution

Duke (2002) describes cleavers as a diuretic, lymph tonic, and depurative with experimental support (score 1). The plant has been used in traditional medicine for swollen lymph nodes, urinary complaints, and skin conditions. Diuretic and anti-inflammatory activities are supported experimentally. No Commission E approval. Safety rating is ++ (relatively safe), with no known significant contraindications at usual herbal doses (Duke, 2002).

External Ids

Gbif: 2895345
Powo: urn:lsid:ipni.org:names:747038-1
Wikidata: Q47685
Gbif: 2913548
Wikidata: Q161581

Botanical Description

Evergreen shrub or small tree with glossy, dark green, oval leaves in opposite pairs. Small, fragrant, white, star-shaped flowers cluster along the branches, followed by clusters of green berries ('cherries') that ripen to red and each contain two flattened seeds - the coffee beans.[1]

Height: Up to 5-10 m in the wild (kept pruned to 2-3 m under cultivation)
Habit: Evergreen shrub or small tree, usually pruned lower in cultivation
Leaves: Glossy, dark green, oval, in opposite pairs
Flowers: Small, fragrant, white, star-shaped, clustered along the branches
Stem: Woody, branching
Root: Deep taproot with fibrous lateral roots
Fruit: Fleshy berry ('cherry') ripening green to red, containing two flattened seeds (coffee beans)
Flowering Period: Varies with climate; often after the rainy season

Scrambling, sprawling annual herb covered in tiny hooked bristles on its square stems, leaves and seed capsules, allowing it to cling to clothing, fur and neighbouring plants as it climbs ('stickyweed'). The leaves are narrow and lance-shaped, borne in whorls of six to eight. Tiny white, four-petalled flowers give way to small, round, bristly-hooked twin seed capsules ('goosegrass burrs').[6]

Height: Scrambling stems to 1-2 m, supported by other vegetation
Habit: Scrambling, sprawling annual herb, climbing by hooked bristles
Leaves: Narrow, lance-shaped, in whorls of 6-8, with hooked bristles on the margins
Flowers: Tiny, white, four-petalled
Stem: Square-sectioned, weak, covered in tiny hooked bristles
Root: Shallow, fibrous root system
Fruit: Small, round, bristly-hooked twin nutlet, clinging to fur and clothing
Flowering Period: May-September

Habitat

Native to the highland forests of Ethiopia and South Sudan; cultivated across the tropical highland belt worldwide (Latin America, Africa, Asia) at elevation, on well-drained, often volcanic soils.

A common scrambling weed of hedgerows, waste ground, gardens and field margins, climbing over other vegetation for support; native to Europe, Asia and North Africa and widely naturalised elsewhere.[6]

Harvesting

Ripe red berries are hand- or machine-picked, then processed (washed or dried) to remove the fruit pulp and expose the two seeds ('beans'), which are dried, hulled and roasted before use.

Parts: Seed

The whole aerial plant (leaf, stem and seed) is cut in spring to early summer, before the fruit fully hardens, and used fresh (as juice) or dried.

Parts: Leaf, Seed, Stem
Season: Spring to early summer

Traditional Uses

Coffee has a centuries-long tradition, originating in Ethiopia and spreading through the Arab world and beyond, as a stimulant beverage taken for alertness and to counter fatigue; its seed and leaf extracts have more recently been studied for antioxidant, metabolic and neuroprotective properties.[1]

Cleavers has a long European folk history as a lymphatic and diuretic 'spring tonic' herb, traditionally used to support the urinary system and lymphatic drainage, and topically as a soothing, emollient wash or poultice for skin irritation, wounds and minor swellings.[6]

Preparations

Standardised extract[1]

Decaffeinated or standardised green/roasted bean or leaf extract, taken as capsules for antioxidant or metabolic support studies.

Fresh juice[6]

Fresh aerial parts crushed or juiced, traditionally taken as a spring tonic or applied topically to skin irritation and wounds.

Poultice/wash[6]

Crushed fresh herb or a strained infusion applied topically as a wash or poultice for skin irritation and minor wounds.

Dosage

Brewed coffee[9]

The EFSA Scientific Opinion on the safety of caffeine concluded that habitual caffeine intakes up to about 400 mg daily (roughly 3-4 cups of brewed coffee) do not raise safety concerns for healthy adults, and that single doses up to 200 mg are likewise not of concern. For pregnant women EFSA sets a lower figure of up to 200 mg per day. Note this is a safe-intake ceiling for caffeine, not a therapeutic dose of coffee. Educational reference only, not a prescription.

Not documented

References

REF-2379, REF-2380, REF-2381, REF-2382, REF-2383, REF-2384, REF-2385, REF-2386
REF-0818, REF-0819, REF-0820, REF-1718, REF-1719, REF-1720, REF-1721, REF-1722, REF-1723, REF-1724, REF-1725

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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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.