How to choose a good dietary supplement?

Red flags to avoid (and how to make the right choice)

The dietary supplement market is booming. Between marketing promises, incomprehensible ingredient lists and highly variable prices, it is becoming difficult to know what is actually effective … and what is not.

Here are the 3 main red flags to know to make an informed choice — and avoid paying for a product that does not live up to its promises.

1. ❌ A plant is listed… but no active ingredient is specified

This is the most common mistake.

Many supplements simply state:

“Turmeric 500 mg”
“Ashwagandha 600 mg”

But without specifying the quantity of active ingredient .

👉 However, it is these active molecules that make the product effective:

  • curcuminoids (turmeric)
  • withanolides (ashwagandha)
  • ginsenosides (ginseng)

Why is this a problem?

Two products can display the same dose… but have 10 times different effectiveness.

  • 500 mg of turmeric powder → ~15 mg of active ingredients
  • standardized extract → ~90–100 mg of active ingredients

👉 Without this information, you don't know what you're actually taking .

✔️ What to look for

  • a clear standardization
  • the exact quantity of active ingredients

👉 This is exactly the approach of Nutrifix , which systematically indicates the active ingredients (e.g. curcuminoids, withanolides) for total transparency .

2. ❌ Difficult-to-assimilate forms

Not all nutrients are created equal.

Let's take a simple example: magnesium.

  • magnesium oxide → poorly absorbed
  • magnesium bisglycinate → very well absorbed

👉 On the label, it always says “magnesium”.
👉 In your body, the effect is completely different.

Why is this a problem?

You can consume a decent dose… but absorb almost nothing .

✔️ What to look for

  • bioavailable forms (bisglycinate, citrate…)
  • formulas designed to be used by the body

👉 Nutrifix favours easily absorbed forms (such as bisglycinate) and adds useful cofactors (B6, taurine, etc.).

3. ❌ A long… and unnecessary list of ingredients

Many supplements contain:

  • maltodextrin
  • titanium dioxide
  • silica
  • magnesium stearate

These ingredients are used to facilitate industrial production , not to improve your health.

Why is this a problem?

  • no nutritional benefit
  • sometimes poorly tolerated
  • dilute the overall quality of the product

✔️ What to look for

  • a short formula
  • few excipients
  • simple vegetable capsules

👉 Nutrifix formulas are intentionally free of unnecessary additives , with a “clean label” approach.

4. ❌ No information on concentration (extraction ratio)

It's a detail that almost no one notices... and yet it's essential.

An 8:1 extract means:

  • 8 g of plant → 1 g of extract

👉 So much more focused.

Why is this a problem?

Two products can display:

  • 500 mg

But correspond to:

  • 500 mg of raw plant
  • or 4000 mg plant equivalent (concentrated extract)

👉 Efficiency has nothing to do with it.

✔️ What to look for

  • an extraction ratio (4:1, 8:1…)
  • or a clear standardization

👉 Nutrifix indicates these ratios when relevant, which is a real signal of quality .

5. ❌ A vague origin and little commitment

Finally, the quality of a supplement also depends on:

  • its origin
  • its manufacturing methods
  • his commitments

✔️ What to look for

  • a transparent brand
  • controlled production
  • clear commitments (organic, vegan, sustainable)

👉 Nutrifix checks these boxes:

  • 🇧🇪 Designed in Belgium
  • 🇫🇷 Made in France
  • organic whenever possible
  • vegan
  • certified sustainable fishing (for omega-3 and collagen)

In summary: how to recognize a good supplement?

A good dietary supplement should be:

✔️ Transparent (active ingredients clearly indicated)
✔️ Effective (easily absorbed forms)
✔️ Concentrated (standardized extracts)
✔️ Simple (without unnecessary additives)
✔️ consistent with your values

Why this is important to us (and to you)

At VOW, we believe that a dietary supplement should be:

  • understandable
  • useful
  • honest

Not just a marketing promise.

That's why we chose Nutrifix : a brand that puts clarity and quality back at the center , without compromise.

💡 Key takeaways

👉 If you don't understand the label, there's often a problem.
👉 And if the active ingredients are not listed, there is a good chance that the product will not be optimal.

 

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