For the Trainers: How to Actually Use This With Your Clients
Written for my son, for his friends who train people for a living, and for my coach — who once told me I would be able to reach people he never could, because of what I have come through.
If you train people, you already know the first question and it is not does this work.
It is: could this cost my athlete their career.
So let us start there, because everything else is downstream of it.
I am not a trainer. What I am is the person who sat on the other side of it — the client who was doing everything right and still could not get well. My coach once told me that because of what I have come through, I would be able to reach people he never could. I have thought about that a great deal, and this is my attempt at it.
The certification question, answered honestly
Anyone competing in a drug-tested federation is held to strict liability. It does not matter how the substance got into them. It does not matter that it was not on the label. It is their body, so it is their sanction.
My coach competes natural. Twenty-one world titles, every one of them drug-tested.
Here is where Zinzino actually stands.
| Certification | What it means |
|---|---|
| Informed Sport | Every batch is tested for substances banned in sport, by LGC. Used widely in professional sport worldwide. |
| Cologne List | European doping-prevention program, independent testing for selected banned substances. |
| GMP & FSSC 22000 | Manufacturing quality standards at the facility producing the oil. |
The products covered include BalanceOil+, BalanceOil+ Premium, BalanceOil+ Vegan, Xtend, Xtend+, Protect+, ZinoBiotic+, ZinoShine+ and Viva+. BalanceOil moved from Informed Choice up to the fuller Informed Sport program in 2021, which took it from monthly testing to every-batch testing.
And now the three things you should say before your client says them
This is the part that separates you from someone selling. Volunteer the limitations.
- Certification is batch-specific. The correct instruction is always to check the specific batch number in the Informed Sport database before use. Put that on the fridge. Keep the receipt.
- This is not NSF Certified for Sport. USADA names NSF as the program it considers best suited for tested athletes, and some organizations — MLB clubs, for instance — will only provide NSF-certified products. If your athlete's governing body specifies NSF, this does not meet that standard. Say so plainly. Do not argue the point.
- No certification eliminates risk. USADA is explicit that batch certification significantly reduces but does not remove the chance of a positive test. Your athletes already know this. Hearing it from you builds trust rather than costing it.
One more, and it matters for a bodybuilding audience
Collagen Complex and HSN come through the acquired-brand side of the Zinzino store and are not on the Informed Sport list. Collagen is a category where contamination risk is real. Do not let those ride inside the certification story built for the core range.
What actually makes this different from every other supplement pitch
You can measure it.
That is the whole thing. Not a better fish oil. Not a proprietary blend. The ability to hand a client a number, change something, and hand them a different number four months later.
You already do this with everything else. Bodyweight. Lifts. Circumference. Photos. This is the same discipline applied to something they have only ever guessed at.
The blood spot samples go to Vitas Analytical Services in Oslo, an independent lab that also does contract work for universities and hospitals. That matters — the company selling the supplement is not the company grading the test.
The four tests, and what each one tells you about a client
| Test | What you learn | Price / Premier |
|---|---|---|
| BalanceTest | 11 fatty acids from a finger prick, including the EPA+DHA percentage. Their actual omega-3 status, not a guess. | $179 / $127 |
| Vitamin D | The most clinically actionable number on this list. See below. | $78 / $55 |
| HbA1c | Average glucose exposure over two to three months. A window into habitual fueling that a single session will never show you. | $78 / $55 |
| Gut Health | Gut and metabolic markers. Relevant for anyone with recurring GI complaints in heavy blocks. | $205 / $145 |
Two notes. The BalanceTest and the HbA1c test are not currently available in New York. And these are screening tools, not diagnostics — an abnormal result goes to a physician, not to you.
What the research supports, graded honestly
If you train people who read, some of them will check. So here is the evidence with the confidence attached, including where it is weak. A trainer who says "the performance data is not there yet" is a trainer whose other claims get believed.
Vitamin D — the strongest case on this list
Insufficiency is common in athletes, worse in winter, and dramatically worse in indoor athletes than outdoor ones. Which means the lifters and the gym-based population you work with are the highest-risk group.
The bone finding is the most consistent thing in the literature. Stress fractures affect roughly a fifth of competitors, most under twenty-five, concentrated in basketball, track, rowing, soccer and dance. A 25(OH)D level below about 75.8 nmol/L has been identified as a stress fracture risk factor.
The number worth quoting: in one collegiate cohort, nearly half of athletes tested deficient. After D3 supplementation, the stress fracture rate in that group fell from 7.51% to 1.65% against a retrospective control period.
That is a single-institution observational finding, not proof, and you should present it that way. It is still striking.
The critical nuance: correcting a deficiency helps. Supplementing an athlete who is already sufficient has not been shown to improve anything. That is the entire argument for testing instead of blanket-dosing a whole roster.
Omega-3 — good for recovery markers, not proven for performance
A 2024 systematic review of randomized trials in Nutrients looked at omega-3 and post-exercise inflammation across thirteen studies. Creatine kinase and lactate dehydrogenase were significantly higher in control groups in three of the four studies measuring them — meaning supplemented athletes showed less biochemical evidence of muscle damage. IL-6 improved. Glutathione ratios improved.
Where it gets mixed: delayed onset muscle soreness gave inconsistent results, TNF-alpha showed no difference, and CRP reached significance in only two of thirteen. Effective doses in these studies ran around 2,400 mg per day for four to five weeks.
So here is the sentence to use with a client, and I would use it word for word:
"Omega-3 is a recovery-support intervention with good biomarker evidence and inconsistent performance evidence. If someone tells you it makes you faster, they are ahead of the data. What it appears to do is reduce the biochemical cost of hard training."
Beta-glucan — fewer days lost
This one maps directly onto the outcome you actually get judged on: availability.
Prolonged intense exercise produces a window of depressed immune function, which is why athletes get sick after marathons. In Austin Marathon runners supplementing for 45 days either side of the race, insoluble yeast beta-glucan significantly reduced total upper respiratory infection severity and symptomatic days versus placebo. An earlier trial in 75 marathon runners found reduced infection symptoms alongside better mood and vigor.
Honest caveat: those trials used specific characterized preparations. Beta-glucan is not one interchangeable ingredient. The right statement is that this is the ingredient class studied in athletes, not that this specific product was studied in athletes.
A safety flag you need to know
Yeast beta-glucan — in Xtend, Xtend+ and Protect+ — is an immune-activating compound, and it carries a standing caution for anyone with an autoimmune condition or taking immunosuppressant medication. That includes biologics, methotrexate and steroids, not just transplant patients.
You will have clients in that category and some of them will not have told you. Ask, and route them to their physician. The oat beta-glucan in ZinoBiotic+ is a different molecule and does not carry the same concern.
Where your scope ends
Worth being direct about this, because it protects you.
Individualized nutrition prescription generally belongs to a registered dietitian, ideally one credentialed in sports dietetics, or to a physician. Personal trainers can and do give general nutrition education, but in most states writing someone a nutrition plan is outside scope.
Your role here is education and access to testing. Interpretation of an abnormal result and any individualized plan goes up the chain.
Saying that out loud does two things. It shows you understand the professional landscape, and it keeps you out of trouble. Build the referral into how you present this, not into a disclaimer at the end.
How to actually work it into what you already do
Here is the practical sequence.
- Test yourself first. Take the products, take the retest at 120 days, and have your own before and after. You cannot walk a client through something you have not done.
- Add it at intake. You already take baseline measurements on day one. This is one more, and it is the only one they have never had.
- Correct what is actually low. Not everything. What the test says.
- Retest at 120 days. That interval matches red blood cell turnover, which is why it is 120 and not an arbitrary number.
- Put the two results next to their training numbers. Same review session. Same page. That is the conversation nobody else in their life is having with them.
If you earn a commission on what you recommend, say so before you recommend it. Once, plainly, without apologizing for it: "I'm a partner with this company and I earn on it. Here's the certification documentation and the published research so you can evaluate it without me."
Trainers who disclose get trusted. Trainers who get found out do not.
The four-customer thing
This is the part I most want you to understand, because it changes the entire conversation with a client.
If someone refers four people onto subscriptions of equal or greater value than their own, their monthly order becomes free. They just pay shipping. It is called Zinzino4Free, and it applies to ordinary customers — no business, no team, no recruiting, nothing to sign up for.
Think about what that means in a gym.
Your client is already training alongside four people who ask what they are taking. That conversation happens whether or not anyone plans it. All you are doing is telling them that if those four actually order, theirs stops costing anything.
"Get four training partners on it and yours is free" is a complete, honest, checkable sentence. There is no income claim in it, nothing to join, and nothing to explain twice.
It works for you too. Four clients on subscriptions and your own is covered.
And it is the healthiest version of this business, because it is built on people who genuinely use the product rather than people trying to build something. That is the part regulators care about, and honestly it is the part I care about.
What not to say
Short list. Keep it somewhere you can see it.
- Never treats, prevents, cures or heals anything. Supports, contributes to, helps maintain.
- Not "reduces inflammation." Supports a normal inflammatory response.
- Not "prevents stress fractures." Vitamin D status is associated with bone health and deficiency is a modifiable risk factor.
- Not "clinically proven." Studied in randomized trials. Evidence suggests.
- Not "improves performance." Supports recovery, and performance effects are not established.
- Never diagnose anything from a home test. It screens and tracks. A physician interprets.
- Never quote what anyone might earn. Not a figure, not a range, not a lifestyle.
Every one of those substitutions is both safer and more accurate. You lose nothing.
The short version
Lead with the certification, because that is the question in the room whether or not anyone asks it. Then lead with the testing, because that is what makes this different from every tub in the supplement store.
Grade your evidence honestly and say the weak parts out loud. Know where your scope stops. Disclose that you earn on it.
And tell everyone about the four.
Coach, this is something I have prayed for. I am sharing it in case it is useful to you, to your beautiful wife, and to anyone fortunate enough to be in your inner circle.
With much love,
Steffi
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. I am an independent Zinzino partner and I earn a commission on sales. Home tests are screening tools and not diagnostic; abnormal results should be reviewed by a physician. Certification status, pricing and state availability change — verify against current official sources before relying on anything here. Anyone taking medication or managing a health condition should speak with their physician before adding a supplement.
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