Antioxidant ·Emerging evidence ·Reviewed May 2026
Tangeretin is a polymethoxylated flavone found concentrated in the peel of tangerines and other citrus fruits. It is studied in preclinical models for lipid-lowering, anti-inflammatory, insulin-sensitizing, and antioxidant effects. Human evidence is very limited, and most data come from cell and animal studies.
The bottom line
Evidence rating emerging. Most-documented uses: may support healthy lipid and cholesterol levels (preclinical), may support insulin sensitivity and glucose metabolism (preclinical), antioxidant activity. 9 sources indexed (2004–2020), with 5 interaction records on file.
Core mechanism
Tangeretin's fully methoxylated structure improves its metabolic stability and membrane permeability relative to non-methoxylated citrus flavonoids. In preclinical work it modulates lipid metabolism by influencing hepatic enzymes involved in cholesterol and triglyceride handling, activates AMP-activated protein kinase (AMPK) and PPAR pathways linked to fatty acid oxidation and glucose uptake, and suppresses pro-inflammatory signaling through inhibition of NF-kappaB and downstream cytokines such as TNF-alpha and IL-6. It also scavenges reactive oxygen species and upregulates endogenous antioxidant defenses including the Nrf2 pathway. These mechanisms are largely characterized in vitro and in rodent models rather than in humans.2,6
As a lipophilic methoxylated flavone, tangeretin has low aqueous solubility and is better absorbed with dietary fat. Methoxylation improves metabolic stability and oral bioavailability relative to common citrus flavonoids, but overall human absorption data are sparse.
Ranked by evidence and value.
Real-world pricing across three quality tiers. Assumes Standardized citrus peel polymethoxyflavone extract (capsule).
Isolated tangeretin is a niche ingredient, so most affordable products are broad citrus PMF or nobiletin-and-tangeretin extracts where tangeretin is a minor component. High-purity isolated tangeretin and formulated (phospholipid/SEDDS) softgels sit at the premium end. Prices are approximate US retail and vary with PMF standardization and purity. Updated 2026-06-04.
Dose: Extract supplying ~50-150 mg total polymethoxyflavones daily (tangeretin a fraction of this)6
Timing: With the largest fat-containing meal, once daily
Evidence for tangeretin on lipids derives mainly from animal and in vitro work suggesting effects on lipid metabolism and LDL handling; robust human trials on isolated tangeretin are lacking, so benefits are unproven. Not a substitute for statins or other prescribed lipid therapy.
Dose: Extract supplying ~50-100 mg total polymethoxyflavones daily2,3
Timing: With food, once daily or split with meals
Tangeretin shows antioxidant and anti-inflammatory activity in laboratory models. Human clinical confirmation is limited; treat as a dietary adjunct rather than a treatment.
Dose: Extract supplying ~50-100 mg total polymethoxyflavones daily
Timing: With a fat-containing meal, once daily
Interest is driven by preclinical signals on metabolic and inflammatory pathways shared with the related PMF nobiletin. There is no human longevity data for tangeretin; this is speculative use.
Where this appears in the symptom-to-supplement map, ranked by relevance.
Tangeretin, a polymethoxylated citrus flavone, has been shown in animal and cell models to reduce hepatic apolipoprotein B secretion and the assembly of VLDL, and to favorably modulate lipid-regulating pathways, which lowers circulating LDL cholesterol and triglycerides.1,2
Lipid-lowering data are largely preclinical (rodent and HepG2 cell studies); robust human trials specific to tangeretin are lacking, so effects in people are not established.
Tangeretin suppresses NF-kB and MAPK signaling and downregulates pro-inflammatory mediators such as TNF-alpha, IL-6 and inducible nitric oxide synthase, while scavenging reactive oxygen species.1,2
Anti-inflammatory and antioxidant effects are well characterized in cell and animal studies; clinical confirmation of reduced inflammatory biomarkers in humans is still lacking.
Tangeretin activates the Nrf2/ARE antioxidant response and upregulates endogenous enzymes such as superoxide dismutase, catalase and glutathione peroxidase, increasing cellular defense against reactive oxygen species.9,3
Antioxidant induction is consistently shown in preclinical work; direct human biomarker outcomes for tangeretin specifically have not been established.
In experimental models tangeretin improves insulin signaling and glucose uptake and reduces hepatic gluconeogenesis, partly through activation of AMPK and PPAR-related pathways, which can lower fasting glucose.3,5
Evidence is preclinical; no well-powered human glycemic trials exist. Should not replace established glucose-lowering therapy and should be discussed with a clinician if diabetic.
Tangeretin and quercetin are plant flavonoids with overlapping antioxidant and anti-inflammatory actions and are commonly combined in citrus and bioflavonoid formulas.
Recommendation: Combining is reasonable for antioxidant and anti-inflammatory goals; take with food to improve flavonoid absorption. No special separation is required.
Tangeretin is a recognized inhibitor of cytochrome P450 enzymes (notably CYP1A2 and CYP3A4), and berberine also inhibits CYP3A4 and CYP2D6, so combining them may compound effects on the metabolism of co-administered drugs.
Recommendation: The two supplements together are generally tolerated, but use caution if you also take narrow-therapeutic-index medications metabolized by CYP3A4 or CYP1A2 and consult a clinician or pharmacist.
Tangeretin and curcumin act through complementary anti-inflammatory and antioxidant pathways and may provide additive support against low-grade inflammation.
Recommendation: Reasonable to combine for anti-inflammatory and metabolic goals; take with food. No separation needed, though both can modulate drug metabolism so review concurrent medications.
Tangeretin and omega-3 fish oil work through complementary mechanisms to improve lipid profiles and reduce vascular inflammation.
Recommendation: Reasonable to combine for cardiometabolic support; take with food, no separation required.
As a polyphenolic flavone, tangeretin can complex with non-heme iron in the gut and may modestly reduce its absorption when taken in the same meal.
Recommendation: Separate tangeretin-containing citrus extracts from oral iron supplements by about 2 hours if you are repleting iron status.
Numbered references. Citations throughout the page link here.
Methoxylation enhances the metabolic stability and lipophilic absorption of citrus flavones relative to non-methoxylated analogs.
Polymethoxylated citrus flavones reduced serum lipids and improved insulin sensitivity in an insulin-resistant rodent model.
Tangeretin attenuated pro-inflammatory cytokine production and NF-kappaB activation in cell models.
Tangeretin reduced reactive oxygen species and protected cells against oxidative damage.
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