PRO
Kyle Raison
PCA Pro
30 Servings | Natural Muscle Builder
"Great to see this available in Europe, Efectiv are ahead of the curve."
Unleash your natural potential
144% More Strength¹ and 159% Greater Activation of Muscle Protein Synthesis²
Superior MPS activation
60% More Anabolic Than Leucine²
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for Next Day Delivery
£29.99
EFECTIV® MPS185
DL185™, or L-Leucyl-L-Leucine Monohydrate, consists of two L-leucine molecules that are enzymatically bonded together. Leucine is well-established as a key regulator of muscle protein synthesis (MPS). It activates the mTOR pathway, which is critical for initiating protein translation and muscle growth[1]. However, research suggests that leucine alone may not be sufficient to maximally stimulate MPS[2].
This is where DL185™ comes in, harnessing the highly established anabolic power of leucine, resulting in meaningful performance benefits when combined with training.
60% increase in MPS VS leucine
185% faster absorption than leucine
145% increase in total strength
189% increase in lower body strength
DL185™ Dileucine
2000mg
Detailed Breakdown
| Nutrient | Per 4 capsules |
|---|---|
| DL185™ Dileucine (L-Leucyl-L-Leucine Monohydrate) | 2000 mg |
Ingredients
DL185™ Dileucine (L-Leucyl-L-Leucine Monohydrate), Brown Rice Flour (Gluten Free), Silicon Dioxide, Magnesium Stearate, HPMC (hydroxypropyl methylcellulose) Vegetarian Capsule Shell.
!
Allergen Advice
No known allergens. Manufactured in a GMP Certified factory that handles fish, celery, soya, nuts, wheat and gluten.
✓
Vegan Friendly✓
GMP✓
Made in the UK1
Remove Lid
Take out 4 capsules
2
4 Capsules
Drink with a small glass of water
3
Replace Lid
Store in a cool, dark place
Water
Take capsule with a glass of water
Creatine
Stack with creatine for a performance boost
Recommended Timing
Pro Tip
Take alongside your post-workout shake/meal to boost muscle protein synthesis
Standard Delivery
2-3 Working Days - £1.99
Free over £20Express Delivery
Next Working Day
£2.9930-Day Money Back Guarantee
Train with confidence. If you don't feel the difference, return the unused portion for a full refund.
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EFECTIV® MPS185 (with DL-185®) | 30 Servings | Muscle Builder
30 Servings / 120 Capsules
£39.99
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Proven by Performance
The Science Behind The Formula
By working with top manufacturers in the UK, we're able to source and use the highest quality ingredients and flavours, with all of our products meeting the highest UK food safety standards.
Science Backed Formula
Our products are formulated to work, using clinically studied dosages.
Maximum Effectiveness
No fillers, no guesswork, just clinically supported ingredients that deliver.
"Bioavailability is the key to effective sports nutrition."
m. bowering, expert formulator
The Efectiv Difference
Why athletes choose us over the competition.
EFECTIV
Leucine
Chemical Structure
Dipeptide made of two leucine molecules bonded together
Single essential branched-chain amino acid (BCAA)
Primary Role
Enhances MPS, strength, and recovery via peptide signaling pathways
Acts as the key amino acid trigger for MPS by activating the mTOR pathway
Absorption Mechanism
Absorbed via peptide transporters (PEPT1)
Absorbed as a free amino acid through amino-acid transporters
Effect on MPS
40–60% greater MPS stimulation vs leucine
Well-established baseline stimulator of MPS, but may not maximize it alone
Evidence maturity
New ingredient with limited but emerging human studies
Extensively researched amino acid with decades of nutrition and exercise science data
World Class Performance
Trusted by Champions.
50+ Athletes
+30
Bodybuilding
Abou Konate
Strongman
Chris Harrison
Bodybuilding
Lewis Barker
Mountaineering
Chris Tomlinson
crossfit•hyrox•bodybuilding•crossfit•hyrox•bodybuilding•
Transparent Label
Inside the Scoop.
We don't hide behind proprietary blends. Every ingredient is listed with its exact dosage so you know exactly what you're fueling your body with.
2000mg
DL185™ Dileucine
Research grade anabolic peptide
DL 185®, or L-Leucyl-L-Leucine Monohydrate, consists of two L-leucine molecules that are enzymatically bonded together.
Lab Verified
Certificate of Analysis
We believe in radical transparency. Every batch is tested by an independent ISO 17025 accredited laboratory for banned substances and protein content.
Open CertificateProduct
EFECTIV® MPS185 (with DL-185®) | 30 Servings | Muscle Builder
Status
PASS
Heavy Metals
Not Detected
Microbiology
Pass
Protein Content
25.2g / 25g
RECOMMENDATIONS
Pairs Well With
Muscle Builder
✓
2.4g PeptiStrong
✓
Natural Muscle Builder
£29.99
Testesterone Support
✓
Natural Testosterone | Stress Relief
✓
190 kcal per bottle
£29.99
60 Servings
✓
Reduce stress and support relaxation
✓
Supports energy and overall wellbeing
£17.99
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Frequently Asked Questions
DiLeucine DL185 is a dipeptide form of leucine, designed to support muscle protein synthesis and recovery more efficiently than standard leucine.
Unlike standard leucine, DiLeucine DL185 is bonded as a dipeptide, which may allow for faster absorption and improved utilisation in the body.
It helps support muscle growth, recovery, and performance, particularly around training.