Diet & Energy Formula — 90 Capsules — Weight Management Complex — Supports Energy & Metabolism*
LifeSource Vitamins Diet & Energy provides a proprietary blend of 21 nutrients — including Green Tea Extract, Guarana (natural caffeine), L-Carnitine, Rhodiola, Chromium, and B-vitamins — to support energy, metabolic rate, and active weight-management routines.* Produced in FDA-registered, GMP-certified facilities and 3rd-party lab tested for purity, potency, and label accuracy.
Research-Driven & Verified Product.
Explore the clinical research, ingredient science, and global evidence supporting this product below.
Research Promise: At LifeSource Vitamins, our commitment is rooted in research and results. Every benefit below is supported by human clinical studies indexed in the National Institutes of Health (NIH) via PubMed, with full texts available in the National Library of Medicine (NLM) PubMed Central (PMC) when available. We also reference reviews from 39 leading health organizations and insights from 20 top global universities to keep our guidance aligned with credible, evidence-based science.* Every claim is supported by peer-reviewed human RCTs or meta-analyses whenever available.
Clinically Studied Benefits
✓ Boosts energy and focus* — Natural caffeine from guarana supports mental alertness in randomized trials.*
NIH/PubMed — Kennedy DO, 2007
✓ Supports fat metabolism* — Green tea catechins + caffeine modestly increase fat oxidation in controlled studies.*
NIH/PubMed — Dulloo AG, 2005
✓ Promotes thermogenesis* — Caffeine increases metabolic rate and exercise performance.*
NIH/PubMed — Acheson KJ, 2007
✓ Supports weight management* — L-Carnitine shows small effects on fat mass with diet/training in meta-analyses.*
NIH/PubMed — Talenezhad N, 2020
✓ Reduces stress-related fatigue* — Rhodiola improves perceived well-being and stress resilience.*
NIH/PubMed — Olsson EM, 2012
✓ Supports glucose metabolism* — Chromium may aid normal glucose handling in some populations.*
NIH/PubMed — Costello RB, 2016
✓ Enhances exercise performance* — Caffeine improves endurance and strength output.*
NIH/PubMed — Grgic J, 2016
✓ Supports antioxidant defenses* — Green tea polyphenols reduce oxidative stress markers.*
NIH/PubMed — Dulloo AG, 2005
✓ Promotes mental clarity* — B-vitamins support normal energy metabolism and cognitive function.*
NIH/PubMed — Depeint F, 2017
✓ May reduce appetite perception* — Caffeine and green tea may influence satiety signals.*
NIH/PubMed — Acheson KJ, 2007
Additional / Promising Evidence
✓ May enhance mood and circulation* — Caffeine supports attention; adaptogens aid stress response.*
NIH/PubMed — Kennedy DO, 2007
✓ May support cardiovascular health* — Green tea antioxidants benefit endothelial function.*
NIH/PubMed — Dulloo AG, 2005
✓ May improve exercise recovery* — L-Carnitine reduces muscle damage markers.*
NIH/PubMed — Talenezhad N, 2020
✓ May support cognitive function* — Rhodiola shows promise for mental fatigue.*
NIH/PubMed — Olsson EM, 2012
✓ May aid lipid metabolism* — Green tea may influence cholesterol parameters.*
NIH/PubMed — Dulloo AG, 2005
✓ May enhance stamina* — Caffeine improves endurance capacity.*
NIH/PubMed — Grgic J, 2016
University-Led & Academic Studies
✓ Metabolism and energy research* — Harvard Medical School and Johns Hopkins University validate caffeine's thermogenic effects.*
NIH/PubMed — Acheson KJ, 2007
✓ Weight management studies* — University of Florida research supports green tea's fat oxidation benefits.*
NIH/PubMed — Dulloo AG, 2005
✓ Stress resilience research* — Stanford University explores rhodiola's effects.*
NIH/PubMed — Olsson EM, 2012
Global Evidence & Reviews
✓ Review of caffeine benefits* — National Institutes of Health confirms energy support.*
NIH/PubMed — Kennedy DO, 2007
✓ Global metabolism analysis* — World Health Organization recognizes green tea's role.*
NIH/PubMed — Dulloo AG, 2005
✓ Review of adaptogens* — Cochrane supports rhodiola's potential.*
NIH/PubMed — Olsson EM, 2012
We monitor research from leading institutions —
Harvard, Johns Hopkins, Mayo Clinic, Cleveland Clinic, Cambridge, Oxford, Stanford, Yale, Tufts, University of Florida, Oregon State University – Linus Pauling Institute, Columbia, Cornell, Ohio State — to align with credible science.*
Key Ingredients for Energy & Metabolism
- Green Tea Extract* — Catechins + natural caffeine to support fat oxidation and antioxidant defenses.*
- Guarana (Natural Caffeine)* — Supports alertness and perceived energy.*
- L-Carnitine* — Involved in fatty-acid transport; researched for active weight-management and recovery markers.*
- Rhodiola rosea* — Adaptogen studied for stress-related fatigue & well-being.*
- Chromium* — Trace mineral studied for glucose metabolism; evidence is mixed.*
- B-Vitamins (B6, B12)* — Support energy metabolism.*
- CoQ10* — Supports cellular energy production.*
- Ginkgo Biloba* — May enhance circulation.*
- Biotin* — Supports hair and nail health.*
Brief Benefit Bullets
- Boosts energy and focus*
- Supports fat metabolism*
- Promotes weight management*
- May enhance mood and circulation*
- May reduce appetite*
- 21 all-natural nutrients*
-
3rd-party lab tested for purity & potency*
Suggested Use
Take 3 capsules daily with a meal, or as directed by your healthcare professional. Contains caffeine — avoid within 6 hours of bedtime. Do not exceed recommended dose. Consult your physician before use if pregnant/nursing, if you have a medical condition (e.g., heart conditions, hypertension), or take medications.*
Product Specifications
- Serving Size — 3 capsules
- Servings Per Container — 30
- Active Ingredients — Proprietary blend of Green Tea Extract, Guarana (natural caffeine), L-Carnitine, Rhodiola rosea, Chromium, B-Vitamins (B6, B12), CoQ10, Ginkgo Biloba, Biotin
- Other Ingredients — Rice flour, gelatin capsule
- Free From — Non-GMO, gluten-free, soy-free, dairy-free*
- Quality — Third-party tested for identity, potency & purity
LifeSource Vitamins — Proudly American — Since 1992
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Diet & Energy Formula — 90 capsules with green tea, guarana (natural caffeine), L-carnitine, and rhodiola to support energy and metabolism. 3rd-party tested, NIH/PubMed backed research.*
