Waar moet je op letten bij het kopen van supplementen?

What should you pay attention to when buying supplements?

The world of supplements seems straightforward, until you look at a label full of complicated terms like magnesium oxide or methylcobalamin . Sounds professional, but is it actually good for your body?

At Optemuse, we want to help you make informed choices. In this blog post, we'll explain what to look for when choosing supplements. Because not all ingredients are created equal, and certainly not all equally effective.

Not all vitamins and minerals are the same

The amount of a vitamin listed on a jar doesn't tell the whole story. What really matters is whether your body can absorb it. This is called bioavailability, or: how much of the active ingredient actually reaches your bloodstream?

This is determined by the form in which a vitamin or mineral is present. Some forms are absorbed effortlessly by your body. Others are largely excreted, never doing anything for your health. A shame, isn't it?

Which shapes do you choose?

Below is an overview of well-absorbed forms versus less effective variants:

Examples of well-absorbable forms:

  • Magnesium: magnesium bisglycinate, magnesium citrate
  • Vitamin B12: methylcobalamin, adenosylcobalamin
  • Vitamin B11 (folate): 5-MTHF (as Quatrefolic®)
  • Vitamin D: D3 (cholecalciferol)
  • Zinc: zinc bisglycinate, zinc picolinate
  • Iron: iron bisglycinate, iron citrate

Examples you would rather avoid:

  • Magnesium oxide (poorly absorbed, has a laxative effect)
  • Cyanocobalamin (synthetic form of B12)
  • Synthetic folic acid (difficult for many women to convert)
  • Zinc oxide, iron fumarate, calcium carbonate (low absorption)

So it's not just what you swallow, but especially in what form .

And what about fillers?

Fillers are often used to make supplements more stable or to fill capsules. But here too, not all substances are created equal.

🚫 Fillers you should avoid:

  • Magnesium stearate – reduces solubility and may have a laxative effect
  • Microcrystalline cellulose (MCC) – may influence production and absorption
  • Maltodextrin – high glycemic index, may increase blood sugar levels
  • Sorbitol & mannitol – can cause digestive problems
  • Titanium dioxide – banned in some countries due to potential risks

What do we use at Optemuse?

We consciously choose natural fillers that are easily absorbed and consist of fatty acids that provide energy. No unnecessary additives, only functional ingredients that contribute to your health.

In summary: this is what you should pay attention to

Want to be sure you're buying a good supplement? Always check:

✅ Which form of the vitamin or mineral is used
✅ Whether it contains natural fillers
✅ Whether your body can actually absorb and use it
✅ Whether the brand is transparent about its choices

Cheap is (unfortunately) often expensive

If you choose the cheapest bottle at the drugstore, chances are you'll end up with fillers, synthetic forms, and low bioavailability. You'll be taking something daily that your body doesn't use much of and may even put more strain on your body. Invest a little more in quality—your body deserves it.

At Optemuse, we choose to keep our prices as low as possible. We want our natural solutions to be accessible to all women.

Still unsure? We're happy to help.

We understand that sometimes you can feel overwhelmed. Feel free to send us a message if you're unsure about a specific supplement or would like advice on what's right for your situation.

At Optemuse, your health is our top priority, and that includes transparency, quality, and knowledge.

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