ESSENTIAL BRAIN & LIVER NUTRIENT
30-day supply
Key Benefits
Essential nutrient for brain and liver function
Supports cell membrane integrity
Promotes acetylcholine production for memory
Supports fetal brain development during pregnancy
Recommended Dose
420mg
Take one 250mg capsule daily with food. Eggs are the richest dietary source of choline (one egg provides about 150mg), so if you eat eggs regularly, supplementation bridges the gap. If you follow a plant-based diet, supplementation is particularly important.
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The Details
Choline was only recognized as an essential nutrient by the Institute of Medicine in 1998, which partly explains why it's still under the radar for most people. Here's the reality: over 90% of Americans don't meet the adequate intake for choline. That's a problem, because choline is essential for brain function, liver health, and cellular integrity.
In the brain, choline is the precursor to acetylcholine — the neurotransmitter responsible for memory, learning, and muscle control. Low acetylcholine is associated with age-related cognitive decline and is a hallmark of Alzheimer's disease. Adequate choline intake supports sharp memory and clear thinking across the lifespan.
Choline is also critical for liver health. It's required to produce phosphatidylcholine, the primary component of VLDL particles that export fat from the liver. Without enough choline, fat accumulates in the liver — and choline deficiency is now recognized as a contributor to non-alcoholic fatty liver disease. If you're pregnant or planning to become pregnant, choline is especially important: it supports fetal brain development and neural tube closure.
Research
Key studies supporting Choline, from peer-reviewed journals.
Prenatal choline supplementation improves child sustained attention: a 7-year follow-up of a randomized controlled feeding trial — 2022
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.
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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.
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