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Amino-XR intra-workout BCAA supplement in jar, supporting muscle endurance and hydration during training
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  • Amino-XR intra-workout BCAA supplement in jar, supporting muscle endurance and hydration during training
  • Athlete drinking Amino-XR intra-workout BCAA supplement to reduce fatigue and support muscle recovery
  • Amino-XR intra workout BCAA drink with lime slices and text highlighting benefits on a white background
  • Amino-XR supplement benefits infographic showing muscle preservation, endurance, hydration, and BCAA support
  • Amino-XR BCAA supplement - no fillers, 42 servings, vegan friendly, fully recyclable, made in the UK
  • Amino-XR BCAA 2:1:1 formula with L-Leucine, L-Isoleucine, L-Valine, electrolytes, and hydration support
  • Mixing Amino-XR BCAA supplement in water for intra-workout hydration and endurance
  • Man holding a black water bottle with text about its use during exercise on a black background
Amino-XR

Amino-XR

£21.99

Amino-XR is a premium BCAA and essential amino acid blend designed for men and women who want to enhance muscle recovery, maintain lean muscle, and improve training endurance. Ideal for athletes, gym-goers, and anyone engaging in high-intensity or prolonged workouts, Amino-XR supports energy levels, reduces fatigue, and protects muscle tissue during exercise.

340g Powder
Benefits

• Supports muscle repair and recovery
• Reduces post-workout soreness
• Preserves lean muscle during exercise
• Enhances endurance and training performance
• Supports hydration during workouts
How to use

Mix 1 serving with 200–250 ml of water and sip during or immediately after training. For maximum recovery and endurance, combine Amino-XR with PX-Protein post-workout.

Clean, Effective Formulas

No fillers. No unnecessary additives. Just proven ingredients that work.

Mind & Body Support

Every product is designed to boost focus, energy, recovery, and overall wellbeing.

UK-Made Quality

Manufactured in the UK to the highest standards for safety, purity, and trust.
Athlete sipping Amino-XR intra-workout to reduce fatigue and support muscle recovery

Amino-XR.
Intra workout BCAA drink.

Amino-XR is a clean intra-workout amino acid supplement designed to support muscle preservation, endurance, hydration, and recovery during training, using a 2:1:1 BCAA ratio.

Key amino acids and their role:

L-Leucine – Triggers muscle protein synthesis
L-Isoleucine – Supports energy metabolism during exercise
L-Valine – Helps delay fatigue during endurance activity

Fuel your workout.
Protect your muscle.

Preserves Lean Muscle During TrainingBCAAs help reduce muscle protein breakdown, especially during intense or fasted workouts.

Preserves Lean Muscle During Training
BCAAs help reduce muscle protein breakdown, especially during intense or fasted workouts.

Supports Endurance and PerformanceAmino acids provide fuel during exercise, helping maintain training output and stamina.

Supports Endurance and Performance
Amino acids provide fuel during exercise, helping maintain training output and stamina.

Aids Faster RecoverySupports muscle repair and reduces exercise-induced soreness when used during or after training.

Aids Faster Recovery
Supports muscle repair and reduces exercise-induced soreness when used during or after training.

Supports Hydration During ExerciseIdeal as an intra-workout drink, helping maintain fluid balance and performance.

Supports Hydration During Exercise
Ideal as an intra-workout drink, helping maintain fluid balance and performance.

When to use
Olli Amino-XR
Amino-XR BCAA 2:1:1 formula showing L-Leucine, L-Isoleucine, L-Valine and electrolytes

Before training.

Support muscle preservation during fasted workouts.
Athlete sipping Amino-XR intra-workout to reduce fatigue and support muscle recovery in a gym

During training.

Fuel endurance and hydration intra-workout.
Man drinking from BCAA from a water bottle

After training.

Support recovery and reduce muscle soreness.
Amino-XR intra-workout BCAA supplement supporting muscle endurance and hydration being poured into a shaker

How it
Works.

Amino-XR delivers a precise combination of BCAAs (L-Leucine, L-Isoleucine, L-Valine) and essential amino acids that fuel muscle tissue during workouts. These amino acids delay fatigue, support protein synthesis, and help the body recover more effectively after intense training. When taken during exercise, Amino-XR maintains energy, reduces muscle damage, and helps preserve lean muscle mass.

Who Amino-XR is for

  • People training fasted
  • Endurance and high-volume trainers
  • Those looking to preserve lean muscle during workouts
  • Anyone wanting intra-workout hydration and recovery support
Amino-XR BCAA & Amino Acid Supplement – OLLI

Who it’s not for

  • Those looking for a complete protein meal replacement
  • People not engaging in regular exercise
Athlete holding Amino-XR intra-workout BCAA supplement to reduce fatigue and support muscle recovery BCAA amino powder

BCAA drink for intra-workout endurance

BCAA and essential amino acid blend for muscle repair, endurance, and hydration. Reduces fatigue during training and supports recovery. Perfect for active adults and high-intensity workouts.

Amino-XR supplement container with lemon and lime flavor on a light green background

How OLLI Amino-XR stands out

Flavoured BCAA drinks

Many BCAA products rely on artificial flavours and sweeteners with minimal functional support.

Leucine-only formulas

Some supplements isolate leucine without supporting EAAs, reducing effectiveness.

Where OLLI Amino-XR wins

OLLI Amino-XR delivers a balanced BCAA and EAA profile using a proven 2:1:1 ratio, designed for real-world training performance, muscle preservation, and hydration without unnecessary additives.

Frequently Asked Questions
Amino-XR
What are the main benefits of taking BCAAs for training?

BCAAs (Branched-Chain Amino Acids) - Leucine, Isoleucine, and Valine are essential for muscle recovery and reducing protein breakdown. They are metabolised directly in the muscle, providing a quick energy source during workouts and helping to pre-serve lean muscle mass during intense training or dieting.
When should I drink BCAAs: Pre-workout or Intra-workout?

BCAAs are highly versatile but are most popular as an intra-workout drink. Sipping them during your exercise session keeps a steady supply of amino acids in your bloodstream, helping to delay fatigue and reduce muscle soreness (DOMS) post-exercise.
Does this BCAA powder contain sugar or caffeine?

Our BCAA drink mix is designed to be clean and effective. It is usually sugar-free (check label) and caffeine-free, making it perfect for evening workouts where you want muscle support without the stimulant crash or disrupted sleep associated with pre-workouts.
Why is the 2:1:1 ratio of Leucine, Isoleucine, and Valine important?

The 2:1:1 ratio is the most clinically studied blend. Leucine is the primary driver of muscle protein synthesis (growth), while Isoleucine and Valine assist with energy and glucose uptake. This optimal ratio ensures you get the maximum anabolic (growth) signal without wasting ingredients.
Can BCAAs help me lose weight or burn fat?

While not a "fat burner," BCAAs support weight loss by preserving metabolic muscle tissue while you are in a calorie deficit. By preventing muscle loss, they help maintain your metabolic rate, ensuring that the weight you lose comes from fat stores rather than muscle.

Scientific Evidence

Amino-XR is not just flavoured water; it is formulated based on clinical research into human performance. We rely on peer-reviewed data to determine our specific 2:1:1 ratio and ingredient profile.
Muscle Protein Synthesis (The "Trigger")

The Claim: Leucine is the "key" that starts the engine of muscle repair.

The Evidence: Research published in the Journal of Physiology highlights that while all amino acids are important, Leucine is the primary driver of Muscle Protein Synthesis (MPS). However, data suggests Leucine works best when supported by other Essential Amino Acids (EAAs), which is why we don't isolate it completely.

  • Reference: Wilkinson, D. J., et al. (2013). Effects of leucine and its metabolite β-hydroxy-β-methylbutyrate on human skeletal muscle protein metabolism. The Journal of Physiology.
    Reference
Reducing Muscle Soreness (DOMS)

The Claim: Drinking BCAAs reduces the severity of soreness after training.

The Evidence: A meta-analysis in Nutrition examined multiple studies and found that BCAA supplementation significantly decreased Delayed Onset Muscle Soreness (DOMS) compared to a placebo. This allows for higher training frequency and intensity.

  • Reference: Rahimi, M. H., et al. (2017). Branched-chain amino acid supplementation and exercise-induced muscle damage in exercise recovery: A meta-analysis of randomized clinical trials. Nutrition.
    Reference
Fighting Central Fatigue

The Claim: BCAAs help you feel less tired during long workouts.

The Evidence: This mechanism is known as the "Central Fatigue Hypothesis." During exercise, free tryptophan enters the brain and converts to serotonin, causing tiredness. BCAAs compete with tryptophan for entry into the brain, effectively "blocking" some of this fatigue signal and lowering Perceived Exertion (RPE).

  • Reference: Blomstrand, E. (2006). A role for branched-chain amino acids in toxicity of central fatigue. The Journal of Nutrition.
    Reference

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