From Farm to Farmaceutical
Every product here comes from a manufacturer with its own farms, its own chemists and its own clinical program. That is unusual in this category, and it is the whole reason this shop carries these brands and not others. Below is what that actually means, with the receipts.
Grown where the plant is from
Noni is hand-harvested in French Polynesia, which is the fruit's native range rather than a plantation convenient to a factory. The fucoidan in the LIMU line comes from Undaria pinnatifida, the brown seaweed species most of the published work on that compound is based on.
Species and origin matter here because fucoidan concentration varies widely between seaweeds, and by how the seaweed is processed after harvest.
The research, in plain language →Formulated by someone who signs their name to it
The Nutrifii daily foundation line was developed under Dr. Ray Strand, MD, who practiced family medicine for forty years before moving into nutritional medicine and is Partner.Co's chief medical officer. He works with a scientific leadership team that includes a registered dietitian, a naturopath and an ethnobotanist with eight patents.
A named formulator with a public record is checkable. Most supplement brands do not offer one.
Partner.Co's scientific leadership team →Checked by people with nothing to gain
14 of the 52 products here carry at least one third-party certification: an outside body that tested the product or audited the plant that made it. That is the part of a supplement label you can actually verify, because the certifier is a separate organisation with its own reputation at stake.
The full list is below, including what each mark does and does not tell you.
See every certification →
The scale behind the shelf
What happens before it reaches you
Supplements are barely pre-market regulated in the United States, so every brand says its process is rigorous and almost none of it is independently observed. Here is the chain as Partner.Co describes it, with the parts an outsider can actually verify marked as such.
- 01Their account
Sourced from nature
Ingredients are grown and harvested where the plant is native rather than where a factory happens to be. Noni comes from French Polynesia; the fucoidan is from Undaria pinnatifida.
- 02Their account
Proven ingredients
Formulas are built on ingredients with published human research behind them. The research is real and citable, but it is research on the ingredient, which is not the same as a trial of the finished product.
- 03Their account
Scientifically tested
Partner.Co reports quality and safety testing at multiple points in manufacture. This is the manufacturer testing itself, and no outside party publishes those results, so it rests on the company's word.
- 04Verifiable
Third-party validated
Outside bodies test the product or audit the plant that made it, and publish or maintain their own registers. This is the one link in the chain you can confirm without asking anyone here to be believed.
- 05Verifiable
Named formulators
The daily foundation line was developed under Dr. Ray Strand, MD, with a scientific leadership team whose members are listed publicly by name and credential.
Two of the five are checkable by a stranger. It is worth knowing which three are not.
Third-Party Certifications
Each of these is an outside organisation that tested a product or audited the facility that made it. None of them is an endorsement: a certification tells you what is in the bottle and how it was made, not what it will do for you.
NSF Certified
2 productsNSF, formerly NSF International, is an independent testing and certification company accredited by the American National Standards Institute. Its supplement program checks that what is on the label is in the bottle, and audits the facility that made it.
Verify at the source ↗
Cologne List
12 productsThe Cologne List screens supplements for substances on the World Anti-Doping Agency's prohibited list, at a laboratory that specializes in doping analysis. It is the check competing athletes are told to look for.
- Nutrifii Optimal-M & Optimal-V
- Nutrifii Vináli
- Tahitian Noni Juice
- Tahitian Noni Pouches
- Nutrifii Probiotiix
- MagniGlow
- Slenderiiz Beauty Boost
- Slenderiiz Power Boost
- Slenderiiz PureNourish
- Nutrifii Magnical-D
- Nutrifii Rejuveniix
- Sugar Stop: A Sugar & Carb Blocker
Friend of the Sea
1 productFriend of the Sea certifies marine ingredients against sustainable sourcing criteria and audits the supply chain behind them.
Verify at the source ↗
Kosher Certified
3 productsCertified by OK Kosher Certification, which reviews every ingredient and inspects the plant where the product is made rather than reviewing paperwork alone.
Verify at the source ↗
Halal Certified
2 productsCertified by the Halal Foundation. Partner.Co holds this certification in the United Arab Emirates, Indonesia and Nigeria.
Verify at the source ↗
Listed in the PDR
4 productsThe Physicians' Desk Reference, published by ConnectiveRx, is the product reference that sits in clinical practices. A listing puts the full product information in front of physicians and pharmacists.
Verify at the source ↗14 of the 52 products in this shop carry at least one of these marks. The rest are not uncertified because they failed anything; certification is voluntary and costs the manufacturer money, so it tends to be sought where customers ask for it.
Read it yourself
The documents behind everything on this page, so you can check any of it yourself.
The Journal
Plain-language breakdowns of the research behind fucoidan, cellular nutrition and noni's iridoids, with the limitations stated.
Read →Slenderiiz Drops, reviewed
An independent look at the product, including the 31 percent of reviewers who rated it three stars or lower and the conditions the clinical trial actually ran under.
Read →Dosage guide
The official serving size for every product we carry, read live from the manufacturer's own fact sheets.
Read →These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure or prevent any disease.