My evenings have completely changed
I used to be useless after 7pm. Now I have energy into the evenings and actually enjoy time with my family rather than just surviving until bedtime. Stack has genuinely changed my quality of life.
Nour M.
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Amino Acid600mg
BCAA
MUSCLE RECOVERY & PERFORMANCE FUEL
Dairy freeGluten freeSoy freeGMO free
$7.99/mo
30-day supply
Key Benefits
1
Supports muscle protein synthesis
2
Reduces exercise-induced muscle soreness
3
Promotes post-workout recovery
4
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.
Get your personalized dose⚗️
3rd Party Tested
🩺
Doctor Formulated
🛡️
cGMP Certified
The Details
Why you'll love it
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
Clinical Evidence
Key studies supporting BCAA, from peer-reviewed journals.
1
BCAAs lower muscle damage markers and ease soreness for up to 4 days
The effect of branched-chain amino acid on muscle damage markers and performance following strenuous exercise: a systematic review and meta-analysis — 2021
2
BCAAs reduce muscle soreness and speed recovery after exercise
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
What's Inside
Third-Party Tested
Every batch is independently tested by ISO-17025 accredited labs for purity, potency, and contaminants.
Doctor Formulated
Designed by healthcare professionals using evidence-based research and clinical expertise.
cGMP Certified
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
changed my whole routine tbh
used to take like 5 different supplements every morning and always forgot at least two of them. now i take one stack pack and that's it. so much simpler. and the results are actually better. wild.
Hazel B.
The value proposition is actually excellent
I calculated what I was spending on separate supplements, gym supplements, and energy drinks before Stack.
Tim A.
Simple, smart, and it actually works
The packaging is some of the nicest I've seen in wellness. But beyond aesthetics, the product delivers. My energy throughout the day is more stable and I'm recovering faster from workouts. I was genuinely skeptical.
Ashley N.
The inflammation reduction has been significant
I suffer from low-grade chronic inflammation and it affects everything - energy, mood, joint comfort. Stack's personalized formula has noticeably reduced these symptoms over three months. The targeted approach is clearly more effective than generic options.
Eric T.
My husband noticed before I did
About six weeks in my husband said I seemed more like myself - more energy in the evenings, less irritable, sleeping better. I hadn't even consciously registered how much had changed until he said it.
Amara S.
Personalized for you
Not sure if BCAA is right 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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