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Flavonoid / CD38 inhibitor

Apigenin · Apigenin (4',5,7-trihydroxyflavone)

A plant flavonoid that may slow the age-related NAD+ drain by inhibiting the CD38 enzyme.

D
Evidence grade
Mostly animal
Strongest study
Tier 2 · 2 linked studies

Short answer

Biologically interesting but human evidence is thin. Very safe at supplement doses (50 to 500 mg/day). Reasonable as a low-cost add-on to a NAD+ strategy, not a lead actor.

Product and dose overview

Apigenin (Apigenin (4',5,7-trihydroxyflavone)) is a flavonoid / cd38 inhibitor with evidence grade D, meaning it is primarily supported by animal studies. We track 3 products containing Apigenin. Typical doses range from 50 to 250 mg per serving. The top-ranked product scores 5.9 out of 10 on our composite scale (dose, evidence, price, testing, transparency). Prices range up to $55.00 per month.

Evidence grade: D Products in database: 3 Category: Flavonoid / CD38 inhibitor

Top Apigenin products

ProductBrandDosePrice/mo3rd-party testedScore
Apigenin SupplementDouble Wood Supplements50 mg$24.95Yes5.9
Senolytic ActivatorLife Extension50 mg$19.89Yes5.7
Pure ApigeninDoNotAge250 mg$55.00Yes5.5

Scores are editorial judgments, not a scientific standard. See how we score.

What it is

Apigenin is a flavonoid found in parsley, chamomile, celery, and grapefruit. In cell studies it blocks an enzyme called CD38 that consumes NAD+ as we age.

Why people take it

The theory: less CD38 activity means less NAD+ destruction, so your NAD+ pool stays higher for longer. Direct human trials on aging endpoints are not yet available; most evidence is preclinical or mechanistic.

Our verdict

Biologically interesting but human evidence is thin. Very safe at supplement doses (50 to 500 mg/day). Reasonable as a low-cost add-on to a NAD+ strategy, not a lead actor.

Structure & class

4',5,7-Trihydroxyflavone. Non-competitive CD38 inhibitor; also modulates NF-κB, mTOR, and estrogen receptor β signalling in vitro.

Mechanism & clinical data

Preclinical data (Escande 2013; Chini 2020) show CD38 inhibition and elevated NAD+ in mouse tissues. Senolytic activity demonstrated in vitro alongside fisetin/quercetin. No published human RCT on healthspan endpoints as of 2026.

Pharmacokinetics

~90 min in humans; low oral bioavailability.

Dose & forms

Trial dose
50 mg
/ day
Range in trials
25 to 500 mg
/ day
Common forms
Capsule, Powder

What to watch out for

Bioavailability is low without a fat carrier or phytosome form; grapefruit-derived apigenin retains CYP3A4 interaction risk.

Safety limits and interactions

When a product exceeds the UL or contains an ingredient with clinically significant interactions, a "Review advised" flag appears on its product page and links here.

Safety note
No formal UL. Generally recognized as safe with no reported toxicity from typical dietary or supplemental intake (e.g., 50 mg/day); sedation/muscle relaxation only reported at extreme experimental doses.

Source: https://pmc.ncbi.nlm.nih.gov/articles/PMC6472148/

Where this dose comes from

The trial dose above is our editorial pick from the published human trials for this ingredient. We choose the dose that the best-available studies used on the endpoint most relevant to longevity. The range shows the lowest and highest doses tested in published trials. The landmark studies below are the papers we read to set it. You can click through and check our work.

When new trials publish, our automated sweeps flag them. If a new study materially changes the dose, we update it through editorial review and record the old dose, new dose, and the triggering study in every affected product's recommendation history. The dose is never changed automatically.

Regulatory status

EUFood supplement, permitted (novel food status product-specific)
USDietary supplement, no NDI restriction
UKFood supplement, permitted
CANHP

Timeline

Regulatory events, evidence grade changes, and key research milestones for Apigenin, most recent first. Studies link to the paper; regulatory entries name and link the responsible authority.

  • 2025-04 Regulatory single source
    EU Court sharpens the bar for botanical health claims
    A Court of Justice of the European Union ruling in April 2025 further tightened the requirements for how botanical ingredients (herbs, plant extracts) can be marketed with health claims in the EU, effectively removing much of the flexibility of the on-hold list.
  • 2024-06 Regulatory confirmed
    EU report identifies 117 supplement substances as potential health risks
    The HoA Working Group on Food Supplements (26 European countries) published its first report evaluating 117 substances used in food supplements. Of these, 65 were assessed as likely novel foods, 6 were already regulated, 34 had insufficient data, and 12 were prioritized for Article 8 restriction under Regulation (EC) No 1925/2006. The 12 priority substances include ashwagandha, curcumin, melatonin, piperine, St. John's wort, coumarin, p-synephrine, maca, holy basil, Melaleuca, black cohosh, and L-tryptophan. The report drew on 1,500 RASFF alerts reviewed between 2017 and mid-2022.
  • 2020 Research milestone
    Chini et al. 2020 (Cell Metabolism)
    CD38 identified as major NAD+ase driving NAD+ decline with aging, pharmacological CD38 inhibition (including flavonoids like apigenin) reversed tissue NAD+ loss in mice.
  • 2013 Research milestone
    Escande et al. 2013 (Diabetes)
    Apigenin inhibited CD38 in vitro and raised NAD+ in mouse tissues, improving metabolic markers.
  • 2006-12 Regulatory confirmed
    EU Health Claims Regulation adopted
    Regulation (EC) No 1924/2006 laid down harmonised rules for nutrition and health claims made on foods, including supplements. Only claims listed in the EU Register of authorised claims can be used. Rejected botanical claims are held in a separate on-hold list.
  • 1997 Regulatory confirmed
    EU introduces the Novel Food Regulation
    Regulation (EC) No 258/97 required any food or food ingredient without a history of consumption in the EU before 15 May 1997 to be authorised before being placed on the market. This is the framework that captures NMN, spermidine as a supplement ingredient, urolithin A, and many other longevity actives.

Landmark studies

Found in these products (3)

All products in our catalog that contain Apigenin, ranked by our overall score. Ranking is editorial, never paid.

Double Wood Supplements
Senolytic
Active per serving
Apigenin 50 mgCapsule · 120 servings
Price per serving
$0.21$24.95 · 120 servings
Testing
3rd-party listed · public lab certificate

Status as recorded in the catalog from brand materials; not independently verified by NO1GEVITY.

Score & research context 5.9/10

Editorial score, not proof that this product works. Research-dose calculations are not dosing advice.

100%
of trial dose
$0.21
per research-dose day, not label serving
0Trial dose2×
Catalog price · Confirm current price with doublewoodsupplements.com
Life Extension
Autophagy
Ingredients listed
3 ingredients listedlargest listed: Fisetin 312 mg
Price per serving
$1.66$19.89 · 12 servings
Testing
3rd-party listed · no public lab certificate

Multi-ingredient bundle

Status as recorded in the catalog from brand materials; not independently verified by NO1GEVITY.

Score & research context 5.7/10

Editorial score, not proof that this product works. Research-dose calculations are not dosing advice.

100%
of trial dose
$2.66
per research-dose day, not label serving
0Trial dose2×
Catalog price · Confirm current price with www.lifeextension.com
DoNotAge
NAD+ booster
Precursor per serving
Apigenin 250 mgCapsule · 366 servings
Price per serving
$0.15$55.00 · 366 servings
Testing
3rd-party listed · no public lab certificate

Status as recorded in the catalog from brand materials; not independently verified by NO1GEVITY.

Score & research context 5.5/10

Editorial score, not proof that this product works. Research-dose calculations are not dosing advice.

100%
of trial dose
$0.03
per research-dose day, not label serving
0Trial dose2×
Catalog price · Confirm current price with donotage.org
Editorial guides

Buying guides and comparisons

Neighbouring molecules

Related ingredients

See all in Flavonoid / CD38 inhibitor →

Molecules in the same class, plus the actives most often formulated alongside Apigenin in our catalogue.

FisetinCstacked together in 1 productQuercetin PhytosomeBstacked together in 1 product

See Apigenin in context: the mechanism it acts through, the biomarker it moves, the products that dose it, and the trials that tested it.

View Apigenin on the Longevity Map →

Frequently asked questions

What is Apigenin?

Apigenin is a flavonoid found in parsley, chamomile, celery, and grapefruit. In cell studies it blocks an enzyme called CD38 that consumes NAD+ as we age.

What dose of Apigenin should I take?

The trial dose in published human studies is 50 mg per day, with a range of 25 to 500 mg per day. Always consult a qualified clinician before starting any supplement.

Is Apigenin safe?

No formal UL. Generally recognized as safe with no reported toxicity from typical dietary or supplemental intake (e.g., 50 mg/day); sedation/muscle relaxation only reported at extreme experimental doses.

What is the best Apigenin supplement?

We track 3 products containing Apigenin. The top-ranked product scores 5.9 out of 10 on our composite scale, which evaluates dose, evidence, price, third-party testing, and transparency. See the comparison table above. Scores are editorial judgments, not a scientific standard.

What is the evidence grade for Apigenin?

Apigenin has evidence grade D, meaning it is primarily supported by animal studies. Grade A means replicated human RCTs with hard endpoints. Grade B means human RCTs with biomarker outcomes. Grade C means mixed or small human trials. See our evidence grading methodology.

Independently checked

Data verification

Evidence grade
D
Mostly animal
Research dose
50 mg
Products tracked
3
Updated continuously
Safety signal
No formal UL. Generally recognized as safe with no report...

Evidence grades are reviewed when new human RCTs are published. Product counts update automatically as new products are added. Dose ranges reflect published trial data, not brand recommendations. Read how we verify.