Questions about HW6-Piceid
What is piceid?
A stilbene glucoside — resveratrol with a β-D-glucose ring attached at the 3-hydroxyl (resveratrol-3-O-glucoside, C₂₀H₂₂O₈, CAS 27208-80-6). The major resveratrol derivative in grape juice and the principal stilbene of Japanese knotweed root.
Is piceid the same thing as polydatin?
Yes — one molecule, two names (PubChem CID 5281718). Piceid comes from the Sitka spruce genus Picea (1976); polydatin from Polygonum cuspidatum, Japanese knotweed.
What does the HW6 designation mean?
HW6 is a Panacea Bio Chem research designation — an internal label for the company's polydatin formulation programme. Not a pharmacopoeia entry, not an INN, not a third-party classification.
Why is piceid studied as a resveratrol prodrug?
β-glucosidase enzymes remove the glucose cap and release free resveratrol — shown in vitro with Aspergillus oryzae (Wang et al., 2007). Free resveratrol's oral bioavailability in humans is below one percent due to rapid conjugation (Walle et al., 2004); the stable glucoside is the more delivery-friendly precursor. See The Research.
Where does piceid occur naturally?
Japanese knotweed roots (the commercial source), grape skins and juice, red wine, peanuts in smaller amounts, and Sitka spruce bark — the name's origin.
What is HPβCD and why does Panacea use it?
Hydroxypropyl-β-cyclodextrin, a water-soluble cyclodextrin used in formulation science to wet and solubilize poorly soluble compounds. Polydatin–cyclodextrin inclusion complexes have published precedent (Liu et al., 2015; Li et al., 2018). Panacea uses HPβCD as a polydatin wetting aid in the HW6 programme.
Is polydatin shown to treat anything?
No. The published pharmacology (reviews in Molecules, 2022, and Cell Biology International, 2026) is overwhelmingly cell and animal research. No human clinical outcome is established, and this site claims none.
What does Panacea claim for HW6-Piceid?
A research-stage formulation programme with engineered wetting and dispersion behavior — nothing more. No finished product, no clinical claim; in-house parameters remain Panacea intellectual property.