Camellia Sinensis Veridis Extract
Also known as: Camellia sinensis, Green tea, Black tea, White tea, Oolong tea, Camellia Sinensis Veridis
Overview
Camellia sinensis is a plant species whose leaves and buds are used to produce various types of tea, including green tea, black tea, white tea, and oolong tea. Camellia Sinensis Veridis typically refers to green tea extract, which is derived from the unfermented leaves of the plant and is rich in polyphenols, particularly catechins like epigallocatechin gallate (EGCG). Green tea extract is widely consumed as a dietary supplement due to its potential antioxidant and health-promoting properties. It is available in various forms, including capsules, powders, and liquid extracts. Research suggests potential benefits for weight management, cardiovascular health, and cognitive function, although the quality of evidence varies. The extract's high antioxidant content is believed to contribute to its overall health benefits.
Benefits
Green tea extract, derived from Camellia sinensis, is often promoted for its potential health benefits. Some studies suggest it may aid in weight loss by increasing metabolism and fat oxidation, although results are mixed. Evidence also indicates potential benefits for cardiovascular health, such as improving cholesterol levels and blood pressure, but the strength of evidence varies. The antioxidant properties of green tea extract, primarily due to its high catechin content, may help protect against cellular damage from free radicals. Some research suggests potential cognitive benefits, such as improved mood and alertness, possibly due to the presence of L-theanine. However, more rigorous, well-designed trials are needed to fully understand and confirm these benefits.
How it works
Camellia sinensis extract, particularly green tea extract, exerts its effects through several mechanisms. Its high concentration of catechins, especially EGCG, acts as a potent antioxidant, scavenging free radicals and reducing oxidative stress. EGCG may also influence lipid metabolism by inhibiting enzymes involved in fat storage and promoting fat oxidation. Additionally, it may affect insulin sensitivity and glucose metabolism. Theanine, another component of green tea, can influence neurotransmitter activity in the brain, potentially promoting relaxation and improving mood. These compounds interact with various biological pathways, contributing to the extract's potential health benefits.
Side effects
Camellia sinensis extract is generally considered safe when consumed in moderate amounts, but it can cause side effects in some individuals, particularly due to its caffeine content. Common side effects include jitteriness, insomnia, anxiety, and increased heart rate. Gastrointestinal issues such as nausea, stomach upset, and diarrhea may also occur. Rare but more serious side effects include potential liver toxicity, especially at high doses. Green tea extract may interact with certain medications, such as blood thinners and stimulants. It is contraindicated in individuals with caffeine sensitivity, and caution is advised during pregnancy and breastfeeding due to the caffeine content. Individuals with liver problems should also exercise caution. High doses should be avoided to minimize the risk of adverse effects.
Dosage
The recommended dosage of Camellia sinensis extract, particularly green tea extract, varies depending on the intended use and individual tolerance. A typical dosage range is 250-1000 mg per day, with some studies using up to 1200 mg per day. For potential weight loss benefits, a dosage of 500-1000 mg per day is often recommended. It is best taken before meals to potentially enhance fat burning. Capsules and tea forms are common. Bioavailability may be improved with certain formulations or when consumed with food. While generally safe, exceeding 1200 mg per day is not recommended due to the potential for adverse effects. Individuals should start with a lower dose and gradually increase it while monitoring for any side effects.
FAQs
Is green tea extract safe?
Green tea extract is generally safe in moderate amounts, but high doses can cause side effects like jitteriness and liver problems. Consult a healthcare provider before use.
When is the best time to take green tea extract?
It is often recommended to take green tea extract before meals to potentially enhance fat burning. However, individual responses may vary.
Can green tea extract help with weight loss?
Some studies suggest green tea extract may aid in weight loss, but results are mixed. It is not a magic bullet and should be combined with a healthy diet and exercise.
Are there any drug interactions with green tea extract?
Yes, green tea extract may interact with certain medications, such as blood thinners and stimulants. Consult a healthcare provider if you are taking any medications.
What are the common side effects of green tea extract?
Common side effects include jitteriness, insomnia, and gastrointestinal upset. Rare but more serious side effects include potential liver toxicity at very high doses.
Research Sources
- https://pubmed.ncbi.nlm.nih.gov/33737989/ – This study investigated the impact of green tea consumption on metabolic syndrome components in Korean adults. The results indicated that green tea consumption was associated with a reduced risk of hypertriglyceridemia and abdominal obesity in men, suggesting potential benefits for metabolic health. The study highlights the need for further research to confirm these findings and explore the underlying mechanisms.
- https://pubmed.ncbi.nlm.nih.gov/40314930/ – This research explored the effects of tea consumption on cardiovascular health. The meta-analysis suggested potential benefits for cardiovascular health, though the evidence was not uniformly strong. The study underscores the importance of considering the type and amount of tea consumed when evaluating its impact on cardiovascular outcomes.
- https://clinmedjournals.org/articles/jnmdc/journal-of-nutritional-medicine-and-diet-care-jnmdc-8-057.php?jid=jnmdc – This study assessed the effects of tea components on cognition and found that theanine, a compound found in green tea, may have positive effects on mood and sleep. The research suggests that theanine could be a valuable component for improving cognitive function and promoting relaxation. However, the study was not specific to *Camellia Sinensis Veridis* extract.
- https://www.ema.europa.eu/en/documents/herbal-report/final-assessment-report-camellia-sinensis-l-kuntze-non-fermentatum-folium_en.pdf – This final assessment report by the European Medicines Agency provides a comprehensive overview of Camellia sinensis (L.) Kuntze non-fermentatum folium (green tea leaves). It includes information on its traditional use, pharmacological effects, safety, and quality. The report serves as a scientific basis for the evaluation of herbal medicinal products containing green tea leaves.
- https://www.mdpi.com/2076-3417/12/12/5874 – This review examines the potential health benefits of green tea catechins, focusing on their antioxidant and anti-inflammatory properties. It discusses the role of catechins in preventing chronic diseases and promoting overall well-being. The review highlights the need for further research to fully elucidate the mechanisms of action and optimize the use of green tea catechins for health promotion.
