The science · research library
Recovery isn't just muscle. It's metabolism.
Lean-ergy pairs 1,500 mg of L-Carnitine with green tea leaf extract. Below is the published research on both ingredients, sorted by who you are and how you train. We've included the studies that found no effect, because you should see those too.
01 · How it works
Two jobs. One shot.
Your cells use fatty acids as fuel inside the mitochondria, the engines in your cells. Long-chain fatty acids can't get in on their own. L-Carnitine helps transport them there.
Fatty acids
Long-chain fatty acids are fuel your body can use, but they can't cross into the mitochondria by themselves.
The shuttle
L-Carnitine carries them across the mitochondrial membrane, working with an enzyme called CPT.
Energy
Inside, the fatty acids are broken down into usable energy for training and everyday life.
Where green tea comes in
Green tea's catechins, mainly EGCG, are studied for their role in fat oxidation.13 One proposed mechanism: EGCG may lower malonyl-CoA, a molecule that normally holds CPT back. Less brake on CPT could mean the L-Carnitine shuttle runs more freely.14
Not yet tested together in a clinical trialHow much is in a shot
Most cited trials used 1–3 g a day. Lean-ergy's 1,500 mg sits toward the lower end of that range.
Shaded band: the 1–3 g/day range used in most trials.
02 · Find research for you
What the studies found
Choose what you train for and who you are. Each card tells you what the study tested, on whom, at what dose, and where its limits are.
03 · What's in a shot
Short label. On purpose.
| L-Carnitine | 1,500 mg |
| Serving | 30 mL ready to drink |
| Sugar | 0 g |
| Energy | 5 kcal |
| Daily use | 1 shot a day |
Ingredients: purified water, green tea leaf extract, L-Carnitine, citric acid, natural flavours.
Safety: check with your doctor if
- You have a heart condition or take regular medication. Long-term L-Carnitine use can raise TMAO, a compound still being studied for heart health.20
- You're pregnant, breastfeeding or trying to conceive. Speak to your doctor before using it.
- You're managing PCOS or menopause with medication. Lean-ergy is a functional shot, not a medicine or a treatment for any condition.
- It's for a child. Lean-ergy is not intended for children.
Why we read all of this
My dad used it for marathon training. My mum used it for yoga.
Seeing one ingredient fit two very different routines in the same house is why we went looking for the research behind it. This page is what we found, including the parts that don't flatter the product.
One family's story, not a clinical result. Everyone's experience is different, and it isn't a substitute for advice from your doctor.04 · References
Read the studies yourself
Make it a daily habit
One shot a day. 18 shots in the 3 Week Stack, or 30 in the Monthly Stack.
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