Micronized Resveratrol: What It Means and Why It Matters
Why particle size matters for a poorly soluble compound
Dissolution rate scales with surface area. Take a fixed mass of powder and grind it finer and the total surface exposed to intestinal fluid rises sharply, even though the mass is unchanged. For compounds that dissolve readily this is irrelevant. For resveratrol, which does not, it is one of the few levers available without changing the molecule.
Micronization typically brings particles into the low micron range. The powder looks and weighs the same; what changes is how fast it can go into solution.
Micronized is not the same as standardised
| Label term | What it tells you |
|---|---|
| Trans-resveratrol | The isomer present. Trans is the studied form; cis is not. |
| Standardised to X% | How much of the extract is actually resveratrol. |
| Micronized | Particle size has been reduced. Says nothing about purity. |
| Emodin-free | Tested for emodin, a compound in Japanese knotweed with laxative effects. |
These are independent claims. A product can be micronized and impure, or pure and coarse. Only a certificate tells you which.
Where resveratrol comes from
Most supplemental resveratrol is extracted from Japanese knotweed (Polygonum cuspidatum) rather than grapes, simply because the concentration is far higher. That origin is also why emodin testing matters: emodin occurs naturally in the same plant and needs to be controlled for.
What we make
X500 is 500 mg of micronized trans-resveratrol per capsule, one capsule per serving. Nitro 250 Synergy combines micronized resveratrol with polydatin, the glucoside form, at 250 mg per serving. Both are tested for purity and emodin every batch.
Check the batch before you buy
Resveratrol Certificates of Analysis | All resveratrol supplements | Resveratrol bioavailability
Common questions
Is micronized resveratrol better absorbed?
Micronization increases dissolution rate, which is a prerequisite for absorption. It does not overcome resveratrol's rapid metabolism, which is a separate issue covered on the bioavailability page.
Does micronized powder taste different?
Finer powders can feel smoother but the taste is unchanged. Capsules avoid the question entirely.
This page is educational and describes particle science and extract labelling. Food supplements should not be used as a substitute for a varied and balanced diet and a healthy lifestyle. 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.
