Oxyphyte Green Tea Leaf Extract
Also known as: Green Tea Extract, Camellia sinensis Extract, EGCG Extract, Oxyphyte Extract, Oxyphyte Green Tea Leaf Extract
Overview
Oxyphyte Green Tea Leaf Extract is derived from the leaves of the Camellia sinensis plant, which is well-known for its high catechin content, particularly epigallocatechin gallate (EGCG). This extract is celebrated for its strong antioxidant properties, aiming to enhance total antioxidant capacity (TAC) and reduce oxidative stress markers such as malondialdehyde (MDA). Available in various formats like capsules and powders, it serves as a versatile supplement for health enthusiasts. An extensive body of research, including systematic reviews and meta-analyses, supports the effectiveness and safety of green tea extract, suggesting benefits ranging from improved metabolic health to superior antioxidant defenses. Users often report benefits from both short-term and long-term usage of this extract, with particular emphasis on its role in enhanced overall well-being and metabolic improvement.
Benefits
Oxyphyte Green Tea Leaf Extract is associated with several evidence-based benefits. A systematic review highlighted a substantial increase in total antioxidant capacity (TAC) with a weighted mean difference (WMD) of 0.20 mmol/L (95% CI: 0.09, 0.30, p < 0.001). Additionally, the supplement shows potential for body composition improvement, indicated by a reduction in body mass index (BMI) with a WMD of -0.43 kg/m² (95% CI: -0.73, -0.13, p = 0.005). It may also positively influence obesity-related hormones like adiponectin. Notably, both healthy individuals and those with obesity see benefits, though results may vary based on dose and baseline health status. Research supporting these claims is generally of high quality, employing diverse methodologies and populations.
How it works
Green tea catechins, particularly EGCG, exert their antioxidant effects by scavenging free radicals and boosting the body's natural antioxidant defenses. The extract significantly influences metabolic and cardiovascular health by modulating oxidative stress. EGCG interacts with various molecular pathways related to inflammation, cell signaling, and antioxidant defense mechanisms, contributing to improved overall health and enhanced body composition.
Side effects
Oxyphyte Green Tea Leaf Extract is broadly regarded as safe when consumed in moderate quantities; however, high doses may result in adverse effects. Common experiences include gastrointestinal discomfort, although these occurrences are infrequent. Rare but serious side effects such as allergic reactions or liver toxicity can arise, especially in individuals consuming high doses or those with pre-existing liver concerns. Caution is necessary for potential drug interactions, particularly with anticoagulants due to the extract's high catechin levels. Pregnant or nursing women should seek guidance from healthcare providers, given the limited safety data for these populations.
Dosage
To effectively increase total antioxidant capacity, a minimum dosage of approximately 400 mg/day is recommended. Optimal dosages typically range from 400 mg to 800 mg per day, with some evidence suggesting higher doses could yield additional benefits. While no established maximum safe dose exists, caution is advised for those exceeding 1,200 mg/day. To enhance absorption, it is beneficial to take the extract with meals. Although both green tea extract and brewed tea confer benefits, the extract format is generally preferred for its superior bioavailability of catechins. Co-ingestion with vitamin C may further improve absorption rates.
FAQs
How long does it take to see benefits?
Benefits on total antioxidant capacity (TAC) can appear in both short and long-term supplementation, typically noticeable within a few weeks.
Is it safe for everyone?
While generally safe, individuals with liver issues or those on certain medications should consult a healthcare provider before use.
How does it interact with other supplements or medications?
Green tea extract may interact with blood thinners; consult a healthcare provider for personalized advice.
What are the expected results?
Users can expect an increase in TAC, potential reduction in oxidative stress markers, and improvements in body composition.
Can I take it with food?
Yes, taking green tea extract with meals may enhance its absorption and effectiveness.
Research Sources
- https://pubmed.ncbi.nlm.nih.gov/16577856 – This systematic review analyzed various studies on green tea extract and its benefits, concluding that regular consumption leads to significant increases in antioxidant capacity and health improvements, particularly in metabolic functions.
- https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4231567/ – This meta-analysis examined the impact of green tea extract on body composition, confirming reductions in body mass index (BMI) and improvements in obesity-related metabolic parameters among diverse populations.