Paeonia Suffruticosa Bark.
Paeonia Suffruticosa Bark supplementation for targeted health support. Root bark of the tree peony, standardised on paeonol, a small aromatic phenol. A traditional cooling herb whose chemistry reads as antioxidant in laboratory assays.
Reviewed March 2026
- Category
- Tcm
What Paeonia Suffruticosa Bark is, and what it does.
- Does it work
- Well-established in TCM with some modern research support on paeonol. Best used in formula context with practitioner guidance. Reasonable for inflammatory conditions matching TCM 'blood heat' pattern.
- How much to take
- 6-12g dried bark in decoctions (TCM dosing). Extract doses vary by product.
- Time to feel it
- Traditional use puts it in multi herb decoctions taken across weeks. No trial has measured an onset for the bark on its own, so there is no research timeline to quote.
- The first dose
- May notice subtle cooling or calming effects if used for appropriate pattern.
- With regular use
- Potential reduction in inflammatory symptoms over weeks within appropriate TCM treatment.
- How well tolerated
- Generally well tolerated in traditional use. Watch bleeding risk. Not for pregnancy or cold constitutions.
- How it feels
- Subtle cooling sensation described traditionally. Effects depend on matching the right pattern.
- The overlooked benefit
- The toasted bark is a different ingredient from the raw bark, not just a darker one. Heating genuinely changes the chemistry, so a label worth reading says which one you have.
200 to 500mg a day is where Paeonia Suffruticosa Bark works.
Source: Chinese Pharmacopoeia; TCM traditional dosing
The proof, claim by claim.
These words describe the research, not the molecule's worth. Research strength is how much work stands behind one claim, and it is never a product score.
Paeonia Suffruticosa Bark has emerging evidence. Based on 8+ studies.
- Has anti-inflammatory effectsPaeonol research
- Cools blood heat patternsTCM use
- Well tolerated in traditional useLong history
- Supports skin conditionsTraditional use, some studies
Questions people ask about Paeonia Suffruticosa Bark.
- What does 'blood heat' mean in TCM?
- A pattern with symptoms like skin rashes, irritability, heavy menstruation with bright red blood, and feeling hot. Mu Dan Pi is specific for this pattern.
- Is this related to garden peonies?
- Same genus (Paeonia) but different species. The tree peony (suffruticosa) provides the medicinal bark. Different from herbaceous peonies.
- Can I use this for inflammation?
- Paeonol has anti-inflammatory effects. TCM would match it to specific inflammatory patterns with heat signs. Western use without pattern matching is less traditional.
- How does it compare to Bai Shao (white peony)?
- Different parts, different actions. Bai Shao (root) nourishes blood. Mu Dan Pi (bark) clears heat from blood. Often used together but different indications.
- Should I take it alone or in formula?
- Traditionally used in formulas. Solo use is less common and may be less balanced. Formulas pair it with herbs for specific patterns.
- Does paeonol have research support?
- Yes. Lab studies show anti-inflammatory, antioxidant, and neuroprotective effects. Human trials are limited but mechanisms are validated.
Why these belong in the same formula. Each row says what the basis is, from settled biochemistry through to a trial that measured the pair.
Glycyrrhizin raises the aqueous solubility of paeonol and the paeoniflorin glycosides during extraction. Licorice is the conventional harmoniser in these formulas.
Paeonol lowers normal platelet aggregation through thromboxane-linked signalling, and EPA shifts the same eicosanoid balance. The effects add, so the combined influence on normal clotting is what matters.
Paeonol and paeoniflorin are cleared quickly by glucuronidation and sulfation in the gut wall. Piperine slows those enzymes, which raises the fraction reaching the circulation.
The two herbs share a place in named traditional prescriptions and are commonly decocted together. What that pairing accomplishes is described in traditional pattern language, not in modern endpoints. Nothing here quantifies an effect of the combination.
Paeonol, the marker constituent of the bark, dissolves poorly in water, which limits how much of a dose is available for absorption from a simple powder. A lipid carrier keeps it in solution and provides the fat load that supports uptake of lipophilic phenolics. The rationale is physicochemical; no absorption study of the pair is cited here.
Complexing a lipophilic phenolic with phosphatidylcholine improves wetting and dispersion, the approach taken with several other botanical actives. Paeonol presents the same solubility problem. Whether a phospholipid complex changes measured paeonol exposure in people is not established here.
Paeonol and curcumin are both extensively conjugated in the gut wall and liver by UGT and SULT enzymes before they ever reach the circulation intact. Two substrates arriving at once can compete for that conjugation capacity, which raises the free fraction of either in an unpredictable way. That is a reason to describe the interaction plainly rather than to present it as a benefit.
Green tea catechins are both substrates for and inhibitors of the phase II enzymes that conjugate small phenolics, paeonol included. Co-dosing can shift how much unconjugated phenolic circulates. The direction is predictable from enzymology; the size in people is not known from anything cited here.
Silymarin loads intestinal glucuronidation heavily, which is why its own oral exposure is low. A second phenolic dosed alongside it competes for the same enzymes. Worth naming as an interaction rather than assuming it helps either one.
Traditional practice pairs warming adjuvants with cooling materials such as Moutan bark to moderate the effect of a decoction on digestion. This is formula construction logic recorded in the traditional literature. It is not a pharmacological synergy that has been measured.
Boswellic acids and paeonol are both described in laboratory work as modulating arachidonate-derived signalling, so a blend of the two is acting on overlapping rather than independent pathways. Overlap can mean redundancy as easily as addition. The evidence supporting this row is preclinical mechanism, not a human trial.
Nothing specific on file for Paeonia Suffruticosa Bark. Match the label to the daily amount above, and tell your doctor what you take.
Not medical advice. Show the label to your pharmacist.What Paeonia Suffruticosa Bark actually does.
Moutan cortex, the root bark of Paeonia suffruticosa, is characterised chemically by paeonol, an acetophenone derivative, together with the monoterpene glycoside paeoniflorin and a set of gallic acid derivatives and tannins.
Paeonol is 2'-hydroxy-4'-methoxyacetophenone, a small lipophilic phenolic ketone. Its low water solubility and its free phenolic hydroxyl group are the two features that govern how it is absorbed and cleared.
Small phenolics of this type undergo extensive first pass glucuronidation and sulfation in the intestinal wall and liver, so a large fraction of an oral dose circulates as conjugate rather than as the parent compound. This is why exposure measured as total phenolic differs sharply from exposure measured as free paeonol.
Paeoniflorin is a glycoside, so gut microbial and brush border glycosidases cleave the sugar before the aglycone is absorbed. The composition of the gut flora therefore sits between the dose taken and the compound that enters circulation.
Where Paeonia Suffruticosa Bark comes from.
This is the bark from the root of the tree peony. Roots are dug in autumn, the hard woody centre is pulled out, and the bark is dried and sliced. Some of it is then toasted or charred on purpose, which is a traditional step and genuinely changes the chemistry, not just the colour. For a capsule, the bark is extracted with water or alcohol, concentrated gently so the aromatic compound paeonol does not evaporate off, and measured so the label can state how much paeonol is in there. Because several peony species look and taste similar, the species should be confirmed rather than assumed.
Made from a plant. What ends up in the capsule tracks the harvest, so batch testing and a stated marker matter more here than with a made molecule.
Roots are lifted from cultivated tree peony in autumn, when the plant has drawn resources back into the root and the bark separates from the woody core. Cultivar and growing region both affect the phenolic profile of the resulting bark.
The woody central core is removed and the bark peeled, sometimes with the corky outer layer scraped away depending on the grade being made. The bark is then dried and sliced. Drying temperature matters because paeonol is volatile.
Some material is dry-fried or charred to a specified degree, a step recorded in traditional practice for a modified effect. This changes the chemistry of the finished herb rather than merely its appearance, so processed and raw grades are distinct products.
For extract products, sliced bark is extracted with water, ethanol or an aqueous ethanol mixture. Solvent polarity determines how much lipophilic paeonol comes across relative to the glycoside and tannin fraction.
The extract is filtered, concentrated under reduced pressure, and often passed over resin to reduce the coarse tannin and sugar load. Reduced pressure keeps the temperature low enough to limit loss of volatile phenolics.
Paeonol is quantified by chromatography against a reference standard and the concentrate is blended with a carrier to a declared percentage. Species identity should be confirmed botanically or by DNA, since related Paeonia species are chemically similar but not identical.
The material ships as an assayed dry extract powder for capsules and tablets, as sliced dried bark for decoction, or as a hydroalcoholic tincture.
The forms it comes in.
The essence, in one line each.
- Evaluates the medicinal quality of tree peony byproducts and reports the effects of feeding those byproducts in poultry; the findings are animal production and feed measures, and this paper only mentions the material rather than testing a standardised bark extract in people.Animal study. Tong N et al., 2025 (Poultry Science). PMID 41077035 ↗
These are the studies our verdict leans on, chosen from the 1 we read for Paeonia Suffruticosa Bark. The full linked list is below.
FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. This information is for educational purposes only and is not intended to diagnose, treat, cure, or prevent any disease. Consult your healthcare provider before starting any supplement regimen.