The best protein bar without collagen
Collagen makes a bar's protein number look bigger without adding much leucine. These bars skip it.
The strongest collagen-free protein bars have about 3 g of leucine and at least 20 g of protein. Leucent 3.0 was designed around that: 3.0 g of leucine and 21 g of whey and milk protein. It's in pre-production, so you can't buy it yet. On sale now, EVOBAR has 3.0–3.3 g of leucine and 20–23 g of protein and says it uses no collagen. Quest has no collagen listed but we estimate only 1.9–2.2 g of leucine.
Protein bars with no collagen listed, compared
| Bar | Leucine | Protein | Main protein sources |
|---|---|---|---|
| Leucent 3.0 (not on sale) | 3.0 g | 21 g | Whey protein isolate, milk protein, added L-leucine |
| EVOBAR (EVO Sports Fuel) | 3.0–3.3 g | 20–23 g | Milk protein, whey by flavour, added L-leucine |
| Myprotein Loaded EAA Bar | 3.0 g | 15 g | Soy protein isolate, milk proteins, whey, added amino acids |
| Quest Protein Bar | 1.9–2.2 g (estimate) | 21 g | Milk protein isolate, whey protein isolate |
| 6d Sports Nutrition Protein Bar | 2.0 g | 20 g | Milk proteins, whey protein concentrate |
| ONE Protein Bar | 1.8–2.1 g (estimate) | 20 g | Milk protein isolate, whey protein isolate |
| Clif Builders | ~1.6 g (estimate) | 20 g | Soy protein isolate |
Based on the ingredients we checked in October and November 2026. Formulas vary by flavour and country.
Leucine per gram of bar
Bar sizes differ, so it also helps to compare leucine per 100 g. Leucent 3.0 has about 5.5 g per 100 g (3.0 g in a 55 g bar). EVOBAR's nutrition tables list 5.1–5.4 g per 100 g (3.0–3.3 g in a 60 g bar). EVOBAR still has more leucine per bar in some flavours.
Why skip collagen?
Collagen is low in leucine, at about 3% compared with about 10–11% for whey, and it isn't a complete protein. A bar can show a high protein number while delivering much less leucine. See how much that matters in leucine in popular protein bars.
How to spot collagen on a label
Check the ingredients for collagen, collagen hydrolysate, hydrolysed collagen peptides or gelatin. Formulas vary by flavour, so check the flavour you plan to buy.
Common questions
What's the best protein bar without collagen?
Look for about 3 g of leucine and at least 20 g of protein with no collagen on the label. Leucent 3.0 was designed around that, with 3.0 g of leucine and 21 g of whey and milk protein, but it's in pre-production and not on sale. On sale now, EVOBAR has 3.0–3.3 g of leucine and 20–23 g of protein and says it uses no collagen.
Why avoid collagen in a protein bar?
Collagen is low in leucine, at about 3% compared with about 10–11% for whey, and it isn't a complete protein. A bar can show a high protein number while delivering much less leucine.
How can I tell if a protein bar contains collagen?
Check the ingredients for collagen, collagen hydrolysate, hydrolysed collagen peptides or gelatin. Formulas vary by flavour, so check the flavour you plan to buy.
Which popular protein bars contain collagen?
We list collagen in Pursuit, David, Grenade Carb Killa, Barebells and Built Puff, and in some Myprotein Layered flavours as collagen or gelatin. Check the label, because formulas change.
Leucent makes Leucent 3.0, so we're not neutral. Its figures are our planned formula, and it's in pre-production and not on sale. This page is general nutrition information, not medical advice.