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| Form | Bioavailability | Best For |
|---|---|---|
| Aqueous Stem Extract | Unknown (no human pharmacokinetic data) | The form used in the original animal studies; water-based extraction |
| Powdered Stem Extract (10:1 or 20:1) | Unknown | Concentrated capsule form commonly sold in supplements; standardization varies widely |
Bioavailability: Unknown (no human pharmacokinetic data). Best for: The form used in the original animal studies; water-based extraction.
Bioavailability: Unknown. Best for: Concentrated capsule form commonly sold in supplements; standardization varies widely.
