MUSCLE RECOVERY & PERFORMANCE FUEL
30-day supply
Key Benefits
Supports muscle protein synthesis
Reduces exercise-induced muscle soreness
Promotes post-workout recovery
Helps preserve lean muscle mass
Wellness Goals
Recommended Dose
600mg
Take one 1,000mg capsule daily. For optimal results, take before or immediately after exercise. On rest days, take with a meal. BCAAs work best as part of a protein-sufficient diet.
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Doctor Formulated
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The Details
Of the 20 amino acids your body uses to build protein, three stand out for their unique role in muscle: leucine, isoleucine, and valine — the branched-chain amino acids. Unlike other amino acids that are metabolized in the liver, BCAAs are metabolized directly in muscle tissue, making them an immediate fuel source during exercise.
Leucine is the star of the trio. It's the primary trigger for mTOR, the molecular switch that turns on muscle protein synthesis. Without adequate leucine, your muscles simply can't rebuild efficiently after training. Isoleucine supports glucose uptake into muscle cells, and valine helps prevent the central fatigue that sets in during prolonged exercise.
Research consistently shows that BCAA supplementation reduces delayed-onset muscle soreness (DOMS), decreases markers of exercise-induced muscle damage, and helps preserve lean muscle mass during calorie restriction or intense training blocks. Whether you're lifting heavy, running long, or just trying to bounce back faster between sessions, BCAAs give your muscles what they need.
Research
Key studies supporting BCAA, from peer-reviewed journals.
The effect of branched-chain amino acid on muscle damage markers and performance following strenuous exercise: a systematic review and meta-analysis — 2021
Branched-chain amino acid supplementation and exercise-induced muscle damage in exercise recovery: a meta-analysis — 2017
Study titles are simplified for readability. Provided for informational purposes — not medical advice.
Transparency
Every batch is independently tested by ISO-17025 accredited labs for purity, potency, and contaminants.
Designed by healthcare professionals using evidence-based research and clinical expertise.
Manufactured in cGMP & UL certified, FDA-registered facilities with a flawless inspection record.
As with any natural health product, consult your healthcare practitioner. Store in a cool, dry place. Keep out of reach of children. Discontinue use immediately if you experience an adverse event.
What people say
Really good supplement brand. The daily pack format is so convenient and I've been 100% consistent because of it. The quiz was genuinely thorough. Knocked one star off because I'd love the option to add or remove individual supplements as I learn more about my body.
I've tried so many supplements and honestly nothing has worked like this. The quiz is actually thorough and the results show it. Energy is UP, recovery is UP, sleep is SO much better. Can't believe it took me this long to find this brand.
Three weeks in and I already feel the difference. My morning energy is COMPLETELY different. No more dragging myself out of bed. The personalization through the quiz is what makes it work — it's not just a generic multivitamin. Stack actually thought about what MY body needs.
I've been on a health optimization journey for about three years and have tried what feels like every supplement brand on the market. Most of them are either generic multivitamins dressed up in pretty packaging, or they're so specific that you need to be a nutritionist to understand what you're actually taking. Stack sits in a completely different category. The quiz is the first thing that impressed me. It asks genuinely intelligent questions — not just 'how old are you and what's your gender' but questions about your diet, your sleep patterns, your stress levels, your exercise frequency. It felt like a real consultation rather than a data collection exercise. The pack that arrived was clearly personalized to my answers. After six weeks, the improvements have been consistent and measurable: better sleep quality, more stable energy throughout the day, and noticeably faster recovery after my runs. My partner commented that I seemed more 'on' in the evenings rather than crashing after dinner. The daily pack format is brilliant for compliance — I've been 100% consistent because the habit is so frictionless. One pack, done, every morning. No bottles, no measuring, no forgetting half of them. Genuinely one of the best health investments I've made.
My focus at work has been sharper and I'm waking up without that groggy feeling I used to have every morning. Told two friends about Stack already. Customer support was also really helpful when I had a question about one of the ingredients.
honestly wasn't sure about it at first but three weeks in and i'm so glad i tried it. energy is way better, i'm sleeping properly for the first time in months. the quiz was really detailed which gave me confidence it was actually personalized. would 100% recommend.
Personalized for you
Take our 2-minute Health Assessment and let our AI build your personalized stack — every supplement chosen for your specific goals.
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