About Great Billiom
Great Billiom is a dietary supplement brand operated by Billiom Limited. It makes three supplements, Nattokinase 10,800 FU, DAO Enzyme (Extra Strength) and Citicoline CDP Choline (Extra Strength), each sold at $19.99 on Amazon in the United States.
What We Make
Nattokinase 10,800 FU combines nattokinase, a fibrinolytic enzyme from fermented soybeans, with Vitamin K2 (MK-7) 180 mcg and Serrapeptase 240,000 SPU. A bottle holds 90 delayed-release vegetarian capsules. The 2-capsule serving delivers 10,800 FU, for 45 servings per bottle. It supports healthy blood flow and circulation. Contains soy. $19.99.
DAO Enzyme (Extra Strength) provides 30,000 HDU of diamine oxidase per capsule, with one capsule per serving. A bottle holds 60 capsules, a two-month supply. It supports dietary histamine metabolism and comfortable digestion. $19.99.
Citicoline CDP Choline (Extra Strength) provides 500 mg per capsule and 1,000 mg per 2-capsule serving. A bottle holds 90 capsules, a 45-day supply. It supports memory, focus and mental clarity. $19.99.
How We Choose Doses
We formulate at the doses used in published research, not at the lowest amount that lets an ingredient appear on a label. Our nattokinase serving of 10,800 FU matches the higher of the two dose arms in Chen et al. 2022 (Frontiers in Cardiovascular Medicine), a retrospective study of 1,062 participants followed for 12 months. That study was observational, not randomized or placebo-controlled, and we describe it that way every time we cite it.
How We Choose What We Make
Every Great Billiom product starts with one ingredient that has published research behind it. We add a new product only when there is research to anchor its dose and an independent lab test to confirm what is in the capsule. That is why our range grows one product at a time.
How We Test
Our products are tested by Eurofins, an independent third-party laboratory separate from the manufacturer, for identity, potency, purity, heavy metals and microbial contamination. Identity confirms the ingredient is what the label says. Potency confirms the amount. Purity, heavy metals and microbial testing check what should not be in the capsule at all.
Where to Buy
Great Billiom products are sold on Amazon in the United States. All three are listed on our Amazon store page. Subscribe & Save brings the price to $17.99 per bottle. We do not sell through any other channel.
How We Write
Our sourcing, authorship and corrections policy is published in full on our Editorial Standards page.
Contact
Email: help@thegreatbilliom.com
US address: 98 Wadsworth Blvd, Lakewood, CO 80226
Great Billiom is a brand of Billiom Limited, registered in England and Wales, company number 16175650.
Registered office: 5th Floor, 167–169 Great Portland Street, London W1W 5PF.
Frequently Asked Questions
Who makes Great Billiom supplements?
Great Billiom is a dietary supplement brand operated by Billiom Limited, reachable at help@thegreatbilliom.com and 98 Wadsworth Blvd, Lakewood, CO 80226. The company formulates and sells three products: Nattokinase 10,800 FU, DAO Enzyme (Extra Strength) and Citicoline CDP Choline (Extra Strength).
Where can I buy Great Billiom?
Great Billiom sells on Amazon in the United States only, through its Amazon store page. All three products are $19.99, or $17.99 per bottle with Subscribe & Save. The brand does not sell through any other retailer or channel.
Are Great Billiom supplements third-party tested?
Yes. Great Billiom products are tested by Eurofins, an independent third-party laboratory separate from the manufacturer. Testing covers identity, potency, purity, heavy metals and microbial contamination, confirming that what is on the label is in the capsule and that unwanted contaminants are not.
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.