Coffea liberica (Coffea liberica): Benefits, Dosage, Safety & Evidence

Questions fréquentes

How does Coffea liberica work as a stimulant?

Coffea liberica works primarily through its caffeine content, which acts as a central nervous system stimulant by blocking adenosine receptors in the brain. Adenosine normally promotes sleepiness and relaxation, so blocking these receptors increases alertness and reduces fatigue. The herb also contains chlorogenic acid, which contributes antioxidant activity and may support cognitive function. These combined compounds provide the characteristic stimulant effects. Evidence level: C, based on established caffeine pharmacology and traditional use.

Is Coffea liberica safe to drink during pregnancy?

No, Coffea liberica is considered unsafe during pregnancy due to its caffeine content. Caffeine crosses the placenta and can increase risks of miscarriage, low birth weight, and developmental issues. Pregnant women are generally advised to limit caffeine intake to 200mg daily or avoid it entirely. The stimulant properties may also affect fetal heart rate and development. Women who are breastfeeding should likewise exercise caution, as caffeine passes into breast milk and may cause irritability in infants. Evidence level: C.

What is the recommended dosage for Coffea liberica?

The recommended adult dosage for Coffea liberica is 1-2 cups daily as a beverage. This moderate intake provides stimulant benefits while minimizing adverse effects. Individual tolerance varies based on body weight, caffeine sensitivity, and health status. New consumers should start with smaller amounts to assess tolerance. Those with cardiovascular conditions or anxiety should consult healthcare providers before use. Evidence level: C, based on traditional use patterns and general caffeine guidelines.

Does Coffea liberica interact with any medications?

Yes, Coffea liberica can interact with several medications due to its caffeine content. It may increase effects of stimulants and reduce effectiveness of sedatives or anxiolytics. Caffeine can interact with certain antidepressants, potentially causing dangerous blood pressure spikes. It may also affect blood thinners, thyroid medications, and some antibiotics. The diterpenes in coffee can affect liver enzyme function, altering how some drugs are metabolized. Always consult a healthcare provider about potential interactions with your specific medications. Evidence level: C.

What are the side effects of Coffea liberica?

Common side effects of Coffea liberica include insomnia, nervousness, restlessness, and heart palpitations due to its caffeine content. Some individuals experience digestive upset, increased heart rate, elevated blood pressure, or headaches. Those with cardiovascular conditions or anxiety disorders are more susceptible to adverse effects. Side effects typically occur with excessive consumption or in caffeine-sensitive individuals. Reducing intake or avoiding consumption in late afternoon can help minimize sleep disturbances. Evidence level: C.

Fiche d'information compilée à partir de PubMed

Cette fiche a été compilée à partir de résumés PubMed (NIH) avec l'assistance d'une IA. Chaque affirmation factuelle est citée par un article PubMed réel (voir la liste des sources). Elle n'a pas encore été révisée par un humain — confirmez auprès d'un professionnel de santé avant utilisation.

Compilé à partir de 30 articles PubMed · modèle : gemma4:31b

Résumé

Coffea liberica is a coffee species known for its high resistance to leaf rust and adaptability to climate challenges [PMID:35965645, PMID:40781487]. It is the third most commercially important coffee species, though scientific knowledge of its bioactive characteristics is limited compared to Arabica and Robusta [PMID:42123881].

Contexte

Coffea liberica, originating in Liberia, West Africa, is a coffee variety that accounts for less than 2% of global commercial coffee production [PMID:37701201]. It includes varieties such as C. liberica var. liberica and C. liberica var. dewevrei (Excelsa) [PMID:42123881, PMID:40781487]. The species is noted for its climate resilience and high resistance to the devastating leaf rust disease caused by Hemileia vastatrix [PMID:35965645, PMID:38540822].

Usages traditionnels

Coffee leaves are consumed as infusions in several countries for traditional medicinal purposes [PMID:30326634].

Composés actifs

C. liberica contains caffeine, alkaloids (including trigonelline), and phenolic compounds such as caffeoylquinic acids (CQAs), specifically 3-CQA, 4-CQA, and 5-CQA [PMID:36032408, PMID:30326634, PMID:35474051]. It also contains total phenolic content (TPC) and total flavonoid content (TFC) in its pulp and silverskin [PMID:37701201, PMID:37823107]. Additionally, microproteins designated as coffeetides (cL1-6) have been isolated from its husk [PMID:37764332].

Synthèse des preuves

The available evidence is primarily based on phytochemical analysis, genomic sequencing, and agricultural reviews (Level C and D). There are no clinical trials or systematic reviews regarding the medicinal efficacy of Coffea liberica in humans.

Sources PubMed

1.PMID: 35965645 (2022) — The complete chloroplast genome of Coffea liberica (Gentianales: Rubiaceae). · Mitochondrial DNA. Part B, Resources
2.PMID: 42123881 (2026) — Liberica Coffee (Coffea liberica): A Bibliometric Analysis and Targeted Review of Physical, Bioactive, and Sensory Characteristics. · Molecules (Basel, Switzerland)
3.PMID: 38540822 (2024) — Shaping the Future of Coffee: Climate Resilience, Liberica's Rise, and By-Product Innovation-Highlights from the International Coffee Convention 2023 (ICC2023). · Foods (Basel, Switzerland)
4.PMID: 34207718 (2021) — Digested Civet Coffee Beans (Kopi Luwak)-An Unfortunate Trend in Specialty Coffee Caused by Mislabeling of Coffea liberica? · Foods (Basel, Switzerland)
5.PMID: 42129927 (2026) — Unlocking the Quality Potential of Liberoid Coffee: Advances in Composition, Processing, and Microbial Fermentation.

Coffea liberica

Sources et citations

Calculer une dose sûre de Coffea liberica

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Questions fréquentes

Résumé

Contexte

Usages traditionnels

Composés actifs

Synthèse des preuves

Sources PubMed

Sources gouvernementales

Coffea liberica

Sources et citations

Calculer une dose sûre de Coffea liberica

Plantes associées

Pastinaca sativa

Alexanders

Cercis siliquastrum

Questions fréquentes

Résumé

Contexte

Usages traditionnels

Composés actifs

Synthèse des preuves

Sources PubMed

Sources gouvernementales