1. Green Tea Extract (EGCG)
Green Tea Extract is VittaBurn's primary fat-burning ingredient, providing epigallocatechin gallate (EGCG) — the most researched natural thermogenic antioxidant. EGCG inhibits COMT, the enzyme that degrades norepinephrine in fat tissue, allowing sustained fat-release signals throughout the day. It also activates AMPK for cellular lipolysis. A 2009 meta-analysis (Hursel & Westerterp-Plantenga, PMID: 19597519) confirmed 31% improvement in weight maintenance with green tea catechins. A 2008 trial (Venables et al., PMID: 18326618) demonstrated 4.6-fold fat oxidation increase when combined with caffeine.
2. Maca Root Extract
Maca Root (Lepidium meyenii) from the Peruvian Andes is a well-researched adaptogen supporting energy, endurance, and hormonal balance. Its glucosinolates and macamides modulate the hypothalamic-pituitary axis, supporting adrenal health and cortisol regulation. For weight management, Maca addresses the fatigue and motivational decline that accompany caloric restriction — the single most common reason people abandon weight loss programmes before achieving meaningful results. Modern research confirms its effects on physical energy, stamina, and reproductive hormone balance.
3. Grape Seed Extract
Grape Seed Extract provides OPCs — oligomeric proanthocyanidin complexes — among the most potent plant-derived antioxidants known. OPCs inhibit pancreatic lipase activity, reducing dietary fat absorption in the intestine. They simultaneously improve microvascular circulation, increasing oxygen and nutrient delivery to metabolically active muscle tissue. Published studies confirm Grape Seed Extract reduces markers of oxidative stress and inflammation that impair fat metabolism in overweight individuals, making it a uniquely dual-action ingredient: reducing fat intake and improving fat burning simultaneously.
4. Guarana Seed Extract
Guarana (Paullinia cupana) provides slow-release natural caffeine, bound to tannins that deliver sustained metabolic stimulation over 4-6 hours rather than the sharp spike-and-crash of free caffeine. This gradual release makes Guarana the ideal caffeine source for all-day fat-burning support — synergising with Green Tea EGCG throughout the active day rather than only in the morning. Research confirms the Guarana-EGCG combination increases total fat oxidation during exercise by 4.6 times versus placebo (PMID: 18326618). Guarana also contains theobromine and theophylline for additional metabolic support.
5. Siberian Ginseng (Eleuthero)
Siberian Ginseng (Eleutherococcus senticosus) is one of the most studied adaptogenic herbs in clinical literature. Its eleutherosides regulate the HPA axis, reducing cortisol during periods of physical and psychological stress. Chronically elevated cortisol drives abdominal fat accumulation and leptin resistance — two of the most persistent barriers to weight loss in adults over 35. By normalising cortisol, Siberian Ginseng removes a major hormonal obstacle to fat burning. Published research confirms significant improvements in endurance performance, VO2 max, and stress resilience with regular supplementation.
6. Astragalus Root Extract
Astragalus membranaceus has been used in Traditional Chinese Medicine for over 2,000 years and is now intensively researched in Western pharmacology for immune modulation and metabolic support. Its polysaccharides (APS) act as prebiotics, supporting gut microbiome diversity — particularly species like Lactobacillus and Bifidobacterium that are inversely correlated with obesity. Its anti-inflammatory flavonoids reduce systemic inflammation that impairs insulin sensitivity and fat cell metabolism. Research in Molecular Medicine confirms Astragalus polysaccharides improve glucose metabolism and insulin sensitivity in metabolically compromised subjects.