Posted by Matt Harrison
on August 12, 2025
Resveratrol is one of the most studied plant compounds in longevity research. It also has a well-known problem: getting it into the body in a usable form. Here is what the research actually says, and why we chose a liquid liposomal format.
Absorbed, but not for long
A key human study found that most oral resveratrol is absorbed from the gut, but the body then processes it very quickly, mainly in the gut wall and liver, so only a tiny fraction circulates unchanged. The researchers described this as high absorption but very low bioavailability. It is why the dose on a label does not tell you much on its own.
What a liposome is
A liposome is a microscopic sphere made from phospholipids, the same type of fat that makes up our own cell membranes. In a liposomal supplement, the active ingredient is held inside or within these spheres. The idea is that this protects the compound and changes how it is taken up, compared with a dry powder.
Why liquid?
Liposomes form and stay stable in liquid, which is why we use a liquid format rather than putting the ingredient in a capsule. Each 5 ml serving of our Liposomal Resveratrol contains 100 mg of trans-resveratrol, the form used in most research.
| Liquid liposomal | Capsule or powder | |
|---|---|---|
| Format | Resveratrol carried in phospholipid spheres, suspended in liquid | Dry resveratrol powder |
| Dosing | Measured by volume (5 ml = 100 mg) | Fixed per capsule |
| Supporting ingredients | Water, glycerol, phospholipids, malic acid, rosemary extract | Varies; often capsule shell and processing aids |
| Taking it | Mixed with water or taken directly | Swallowed whole |
What we don't know yet
To be straightforward: most research on improving resveratrol's bioavailability is laboratory work or studies of other delivery technologies, and human studies of liposomal resveratrol specifically are still limited. We think liposomal delivery is the most sensible format available, and we would rather tell you where the evidence stands than overstate it.
How to compare products
- Form: trans-resveratrol is the form used in most research.
- Dose per serving: look for a clear figure in mg.
- Source: most resveratrol comes from Japanese knotweed root.
- Testing: knotweed extracts should be tested for emodin. Ours is tested for emodin and PAH.
Food supplements should not replace a varied, balanced diet and a healthy lifestyle.
Sources
Walle T, Hsieh F, DeLegge MH, Oatis JE, Walle UK. High absorption but very low bioavailability of oral resveratrol in humans. Drug Metabolism and Disposition. 2004;32(12):1377–1382. Full text