daytime · focus + memory + mental clarity

Lion's Mane + Vitamin D3 & K2

Real Lion's Mane mushroom — concentrated at an 8:1 extract ratio, paired with Vitamin D3 + K2 : the vitamins that help your brain and nerves work at their best.

$49.00 USD

RealLionsMane® 8:1 extract
Paired with Vitamin D3 + K2 the vitamins that help your brain and nerves do their job
Supports focus, memory, and mental clarity — without caffeine or stimulants
Made in an NSF certified US facility

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Fruiting-body Lion’s Mane, vitamin D3 and vitamin K2 — one capsule, one simple routine.

Meet BosWell Lion’s Mane + D3/K2: a mushroom-and-vitamin formula with clear amounts listed on every bottle.

Free shipping on every order, automatically applied at checkout. No code needed. No minimum purchase. Available to new and returning customers. Priority shipping is available at an additional charge.

What’s in each serving?

Lion’s Mane: 300 mg of organic fruiting-body extract (8:1).
Vitamin D3: 125 mcg (5,000 IU), as cholecalciferol.
Vitamin K2: 100 mcg, as menaquinone-7.
One bottle: 30 capsules and 30 servings.

Make it part of your routine

Recommended Usage: Take 1 capsule per day with food or as directed by your healthcare professional. Choose a one-time purchase if you want to start with a single bottle without a subscription.

Read the full formula

Other Ingredients: Hypromellose (capsule), Organic Nu-FLOW® (organic rice hulls), and Organic Nu-MAG® (organic rice extract, organic rice hulls, organic gum Arabic, organic sunflower oil). See the product label images for Supplement Facts and directions.

Warning: If pregnant, nursing, or taking any prescription drugs, consult your healthcare professional before use. Keep out of reach of children. Store in a cool, dry place that is away from sunlight. Tamper Evident: Sealed for your protection; do not use if the safety seal under the cap is broken or missing.

This product is a dietary supplement and is not intended to diagnose, treat, cure, or prevent any disease.

Before choosing this dose: 5,000 IU of vitamin D exceeds the general adult daily upper limit of 4,000 IU from all sources. Ask your clinician whether this dose is appropriate for you. Vitamin K can interact with warfarin.

Compare BosWell formulas and serving costs · See Science & Testing and available lot reports.

Lion's Mane + Vitamin D3 & K2

$49.00

Focused Support For Mind And Performance

Thoughtfully paired ingredients support focus, memory, clarity, and everyday cognitive performance naturally.

Mushroom + Vitamin Blends: Brain & Memory Support** · Inflammation Support** · Supports Stress Response** · Mood Support** · Mental Clarity** · Cognition Support** · Made with Fruiting Body

Why this bottle costs $49.

I made this formula because I couldn’t buy it — and once you price real ingredients honestly, this is what they cost.

Real Lion’s Mane fruiting body, concentrated 8:1 — not mycelium grown on grain and ground up, filler and all. Then D3 at a meaningful dose, paired with K2, because they work as a team and most brands leave one out.

Every batch comes out of an NSF-certified, cGMP facility and gets tested for quality, purity, and consistency before it reaches you. View the COA anytime.

Cheaper bottles exist. Flip them over and read the first ingredient — then you’ll know why.

Made From Real Fruiting Body Mushrooms
Concentrated 8:1 Extracts, Not Grain Fillers
Tested For Quality, Purity, And Consistency

Lion's Mane (Hericium erinaceus)

Lion's Mane is the mushroom most studied for its effects on the brain and nervous system. It contains natural compounds that support the growth of nerve connections: the same connections involved in memory, focus, and mental clarity.

Those compounds live in our 100% real Lion's Mane mushroom supplement,
concentrated at an 8:1 extract ratio so you get everything the mushroom has to offer.

Form: Real mushroom, not mycelium-on-grain
Extract ratio: Every gram of extract starts as 8 kg of dried mushroom.
Extraction: Hot water extracted from the fruiting body.
Sourcing: Traditional cultivation regions, finished in a US facility that follows pharmacy-grade manufacturing rules

Vitamin D3 (5,000 IU) +Vitamin K2 (100 mcg)

D3 and K2 are the vitamins that help the mushroom actually work. D3 supports the brain environment where Lion's Mane does its job. Your brain needs adequate D3 to build and maintain healthy nerve pathways.

K2 makes sure the D3 gets directed correctly: to your bones and brain, not your arteries. Most people in North America are low on D3. Most Lion's Mane supplements don't include it at all. We do — because half a protocol is not a protocol.

Fruiting body extract, not grain filler.

Supports brain, bones, and immunity.

Simple ingredients with transparent dosing.

Questions, answered.

Clear answers helping smart buyers compare formulas, ingredients, testing, pricing, and results before switching.

What makes BosWell Lion's Mane different from other Lion's Mane supplements?

Most Lion's Mane supplements — including the powder you mix into your coffee — are not made from the actual mushroom. They're made from the roots of the mushroom grown on oats or rice. The brand grinds up the whole thing and calls it "mushroom powder." It's like paying for olive oil and getting the cardboard box it shipped in. BosWell uses 100% real Lion's Mane mushroom — the part you'd recognize in the woods — concentrated 8:1 (8 pounds in, 1 pound out). Then we pair it with Vitamin D3 and K2, because those are the vitamins your brain needs to actually benefit from Lion's Mane. If your current Lion's Mane says "mycelium" or "oat substrate" on the label, that's the reason it's not working.

How long until I notice something?

Most customers notice sharper afternoons by day 7. The "I notice when I forget it" feeling usually arrives around day 14. Real mushroom extracts build over time — they work quietly in the background, not like a caffeine hit. Give it a full 30 days before you judge it.

Is this like a nootropic or brain drug?

No — Lion's Mane is a mushroom, not a drug. It supports the conditions your brain needs to function well, over time. Most customers describe it as "less fog" or "more ease" rather than a dramatic spike. If you're looking for a caffeine hit, this isn't it. If you're looking for steady, sustainable afternoon clarity, that's what this is for.

Will this interact with my medication?

Check with your doctor first if you take blood thinners, diabetes medication, or immune-affecting drugs, or if you're allergic to mushrooms. Lion's mane is well-tolerated by most people, but only your prescriber knows your full picture.

Why I Made Lion's Mane + D3/K2

Lion's Mane is the first blend I formulated. I’d been diagnosed with a condition that meant I’d have to take vitamin D for the rest of my life. After trying many brands, I wasn’t satisfied with what I found on the market, so I made my own.

Lion’s Mane earned its place for its neuroprotective qualities — care for my long-term cognition. D3 and K2 are not an afterthought in this formula — they’re the reason the mushroom has what it needs to do its job.

— Elizabeth Boswell, Founder

Made From Real Fruiting Body Mushrooms
Concentrated 8:1 Extracts, Not Grain Fillers
Tested For Quality, Purity, And Consistency

Lion's Mane + Vitamin D3 & K2

What’s in each serving?

Make it part of your routine

Read the full formula

Targeted Daily Benefits

Focused Support For Mind And Performance

Focus

Brain & Memory Support

Mental Clarity

Brain & Nerve Support

Before you keep scrolling

Why this bottle costs $49.

Built For Everyday Wellness And Resilience

Meal-Time Support

Clearer Afternoons

Coffee-Free Clarity

Focused Sessions

Real Mushroom Extracts

Ingredient 1

Lion's Mane (Hericium erinaceus)

Ingredient 2

Vitamin D3 (5,000 IU) +Vitamin K2 (100 mcg)

Supplement Facts + How To Take

Clear Formula. Easy Daily Routine.

Supplement Facts

How to take

1 capsule during the day, with food.

Cognitive Wellness Comparison

Why Targeted Ingredients Deliver Better Results

Lion's Mane + D3 + K2

Multi-Mushroom Gummies

What people are saying — in their own words.

Howie Mandel

Colleen Oneill

Madison Johnston

From customers who've tried the rest.

Customer Reviews

Frequently Asked Questions.

Questions, answered.

Build your ritual.

A note from Elizabeth

Why I Made Lion's Mane + D3/K2

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