01 · 50+
Lifters over 50
Ageing muscle needs a louder signal. 3 g of leucine puts every bar at the top of the range researchers suggest for older adults.
Leucent 3.0 · High-leucine protein bar
Protein is a number. Leucine is the switch.
Leucent 3.0 is a protein bar built around the one amino acid that tells your muscles to build: 3 grams of leucine in every bar.
02 · The problem
Most protein bars feed you. Few flip the switch.
Labels sell protein by the gram. Your muscles respond to something more specific. A bar built on 15 grams of mixed protein usually delivers around 1.5 grams of leucine, often less when collagen or soy makes up the protein count.
You ate the protein. The signal stayed quiet.
- Typical bar
- 15 g protein
- Leucine
- ~1.5 g
- Signal
- Partial
03 · The threshold
There's a line. Most snacks stop short of it.
Research on muscle protein synthesis points to roughly 2.5–3 grams of leucine in a single sitting as the point where the building signal fully switches on. Older adults may need the top of that range or more.
We built the bar backwards from that line.
Leucine threshold · ~2.5–3 g per meal
Read: the leucine threshold →04 · The molecule
Three BCAAs. One of them does the talking.
Leucine, isoleucine and valine are the branched-chain amino acids. Leucine is the one that activates mTORC1, the pathway that starts muscle protein synthesis. The other two come along for the ride.
That's why we don't sell a BCAA blend. We just put in more leucine.
05 · The formula
3.0 g leucine. Nothing added for show.
3.0g leucine per bar
| Protein | 21 g · whey isolate, milk protein |
|---|---|
| Leucine, total | 3.0 g · 2.1 g natural + 0.9 g added L-leucine |
| Calories | 220 kcal |
| Sugars | 4 g |
| Fibre | 9 g |
Flavours · Cacao Salt · Vanilla Oat · Peanut Malt
Full formula & ingredients →
06 · Who it's for
Built for people who count the right thing.
02 · Cutting
Cutting phases
Fewer calories means every gram has to work. 3 g of leucine and 21 g of protein in 220 kcal.
03 · Plant-leaning
Mostly-plant eaters
Plant proteins usually carry less leucine. One bar alongside a plant meal tops up the gap.
07 · Compare
Leucine per bar, not protein per bar.
| Bar type | Protein | Leucine |
|---|---|---|
| Collagen-based bar | 10–15 g | < 0.5 g |
| Mixed / soy protein bar | 15–20 g | ~1.2–1.8 g |
| Whey protein bar | 20 g | ~2.0–2.2 g |
| Leucent 3.0 | 21 g | 3.0 g |
08 · Questions, answered
Questions, answered.
How much leucine is in a protein bar?
Most protein bars contain about 1–2 g of leucine. Bars with 15–20 g of mixed protein usually deliver 1.2–1.8 g, and collagen-based bars under 1 g. Leucent 3.0 contains 3.0 g per bar.
What is the leucine threshold?
It's the amount of leucine in one meal needed to fully switch on muscle protein synthesis. Research suggests roughly 2.5–3 g per sitting, and 3 g or more for adults over 50. More on the threshold.
Which protein bar has the most leucine?
Leucent 3.0 is built around leucine, with 3.0 g per 55 g bar: about 2.1 g from whey isolate and milk protein plus 0.9 g of added L-leucine. Most bars contain 1–2 g. See the comparison.
Is leucine better than BCAAs?
Leucine is the BCAA that switches on muscle building, but it works best inside complete protein. That's why we add leucine to 21 g of dairy protein instead of using a BCAA blend. Leucine vs BCAAs.
What's a good protein bar for lifters over 50?
Adults over 50 experience anabolic resistance and benefit from about 3 g of leucine per feeding. Leucent 3.0 delivers 3.0 g of leucine with 21 g of complete protein. More for lifters over 50.
Can I get 3 g of leucine from plant protein?
Yes, but it takes more. Pea and soy protein are about 8% leucine, so you need roughly 35–40 g of plant protein to reach 3 g. A high-leucine snack alongside a plant meal can close the gap. Plant-based leucine guide.
Pre-production · First batch
The first batch is small. Get on the list.
