Anserine and balenine

Anserine: β-alanyl-1-methyl-L-histidine (also written β-alanyl-N-π-methylhistidine); Balenine: β-alanyl-3-methyl-L-histidine, ophidine. Together with carnosine they are the histidine-containing dipeptides (HCDs)

Food-derived & nutrition

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Summary

Class: Naturally occurring methylated analogues of carnosine (profile 10): dipeptides of β-alanine and a methylated histidine. Anserine is abundant in chicken, turkey, salmon and tuna muscle; balenine in whale and some snake and fish muscle, now sourced mainly from opah (moonfish)
Mechanism: Buffer acid, chelate metals, quench reactive carbonyls and aldehydes, and (anserine) resist breakdown by serum carnosinase better than carnosine, so may deliver HCD activity to tissues
Routes studied: Oral (chicken-extract capsules, anserine/carnosine blends, balenine-enriched fish extracts)
Dose range reported: Human trials: anserine ~500 mg + carnosine ~250 mg/day (3:1 blend) for 12 weeks; chicken breast extract 0.5–2 g/day; balenine extracts ~200–500 mg/day in small pilot studies †. Typical products 300–1,000 mg/day
Half-life: Anserine plasma half-life short (tens of minutes) but longer than carnosine because serum carnosinase (CN1) hydrolyses it slowly; balenine is reported to be even more resistant
Storage: Dry capsules or powder: room temperature, sealed
Regulatory status: Food ingredients / supplements; no medicinal approval

Doses are as reported in studies or by the community — never recommendations.

1What it is

Carnosine, anserine and balenine are three closely related dipeptides that animals concentrate in muscle and brain. They differ only in a methyl group on the histidine ring: none (carnosine), on one nitrogen (anserine) or on the other (balenine). Humans make and store carnosine but not anserine or balenine; we only get those from eating meat and fish. Chicken breast is especially rich in anserine, and the Japanese tradition of chicken-essence drinks is the origin of most of the human research. Balenine was first found in whale meat and is now extracted from opah, a large tropical fish; it is a niche Japanese ingredient.

Because carnosine is destroyed within minutes of absorption by the human enzyme carnosinase, interest in anserine and balenine rests on their being tougher versions of the same molecule.

2How it's thought to work

Carnosinase resistance. anserine is hydrolysed more slowly by CN1 than carnosine, and balenine more slowly still, so oral intake produces measurable plasma levels where carnosine often does not (Everaert 2012).

Antioxidant and anti-glycation. scavenge reactive carbonyls and hydroxyl radicals, inhibit advanced glycation end-product (AGE) formation and lipid peroxidation .

pH buffering. the imidazole ring buffers intracellular acid, the basis of carnosine's sports interest; methylation changes the pKa slightly.

Brain blood flow and inflammation. in older adults, anserine/carnosine supplementation preserved blood flow in the posterior cingulate cortex and lowered inflammatory cytokines in exploratory analyses (Hisatsune 2016).

Precursor. anserine may be demethylated to carnosine in some tissues; in humans the extent is unclear.

Methylated relatives of carnosine found in bird and whale muscle, with the same imidazole chemistry: acid buffering and carbonyl capture. The methyl group makes them more resistant to carnosinase, which is the usual argument for taking them instead.Schematic — not to scale

3What the research shows

Graded A (small)

Memory and cognition in older adults (anserine/carnosine blend)

Randomised, placebo-controlled Japanese trials of a 3:1 anserine:carnosine blend (≈750 mg/day) for 12 weeks or 3 months in healthy older adults reported preserved verbal episodic memory and preserved blood flow in memory-related brain regions versus placebo (Hisatsune 2016, J Alzheimers Dis, n≈39; Rokicki 2015, Front Aging Neurosci). Follow-up trials in mild cognitive impairment found benefit mainly in APOE4 carriers in secondary analyses (Katakura 2017; Masuoka 2019, Nutrients). A meta-analysis of HCD supplementation found a small improvement in delayed recall (Schön 2019 †). All trials small, mostly one research group, several funded by the ingredient manufacturer. [3][4][5][6]

Fatigue and exercise (chicken extract, anserine)

Small Japanese and Taiwanese trials of chicken essence or anserine-rich extracts report reduced subjective fatigue and improved recovery; low quality.

Graded B/C

Blood pressure, uric acid, kidney

Anserine reportedly lowers serum uric acid in a small Japanese trial and reduces kidney injury markers in diabetic rodents. Human evidence thin.

Graded C/D

Balenine

Rodent and in-vitro studies show antioxidant and anti-fatigue activity; a few small open-label human pilots from Japan on fatigue and muscle function exist but are not placebo-controlled or widely published †. Evidence is essentially preclinical.

Glycation, diabetes complications

Rodent and cell work for the whole HCD class; human trials mostly with carnosine (profile 10).

4Reported side effects and interactions

Literature-reported

well tolerated in the cognition trials; no serious adverse events; occasional GI complaints.

Community-reported

essentially none specific; mild nausea with chicken-extract products; paraesthesia reported only with β-alanine (free), not with the dipeptides.

Theoretical. histidine-containing dipeptides chelate zinc and copper; very high intakes could affect trace-metal status. Chicken and fish source extracts are relevant for poultry or fish allergy and for purine-sensitive individuals. People with the rare CN1 deficiency (carnosinaemia) accumulate HCDs.

Interactions. none established.

Markers researchers commonly monitor

Marker	Why it's watched
Cognitive testing (e.g. word-list recall)	the trial outcome; a consistent app-based test is the realistic equivalent.
hs-CRP and IL-6	exploratory inflammation markers used in the Japanese trials.
HbA1c and fasting glucose	relevant to the anti-glycation hypothesis in people with prediabetes.
Serum uric acid	reported to fall in one small trial; easy to track.
Serum zinc and copper	only with very high chronic intake, because of chelation.
No compound-specific blood markers are established

Free for everyone. Safety information is never behind a paywall.

5Formulation and handling

Sold as capsules of chicken breast extract standardised to anserine+carnosine content, as purified anserine (often chemically synthesised or from fish), or as balenine-enriched opah extracts (Japan). Blend ratios vary; the trial evidence is on a 3:1 anserine:carnosine blend. Store dry at room temperature; hygroscopic. No calculator applies.

6Commonly studied alongside

Carnosine (profile 10 — the parent dipeptide), β-alanine (the carnosine precursor used in sport), creatine, omega-3 fatty acids (cognitive context).

Informational cross-links. Not stack recommendations.

7Regulatory status by region

Region	Status (checked —)
United States	Dietary supplement / food ingredient (chicken extract); no approved claims
European Union	Food supplement if from conventional meat/fish extracts; isolated or synthetic anserine may need Novel Food authorisation †; no authorised health claim
United Kingdom	As EU
Australia	Food / listed complementary medicine depending on presentation
South Africa	Food / complementary medicine †
Sport	Not prohibited by WADA

8Open questions

Whether anserine's benefits are its own or come from conversion to carnosine in tissue.
Independent replication of the cognition trials outside Japan and outside the originating group.
Any human data for balenine beyond pilot studies.

9References

1Boldyrev AA, Aldini G, Derave W (2013). Physiology and pathophysiology of carnosine. Physiol Rev. PubMed · DOI
2Everaert I et al. (2012). Low plasma carnosinase activity promotes carnosinemia after carnosine ingestion in humans. Am J Physiol Renal Physiol. PubMed · DOI
3Hisatsune T et al. (2016). Effect of anserine/carnosine supplementation on verbal episodic memory in elderly people. J Alzheimers Dis. PubMed · DOI
4Rokicki J et al. (2015). Daily carnosine and anserine supplementation alters verbal episodic memory and resting state network connectivity in healthy elderly adults. Front Aging Neurosci. PubMed · DOI
5Katakura Y et al. (2017). Anserine/carnosine supplementation suppresses the expression of the inflammatory chemokine CCL24 in peripheral blood mononuclear cells from elderly people. Nutrients. PubMed · DOI
6Masuoka N et al. (2019). Effects of anserine/carnosine supplementation on mild cognitive impairment with APOE4. Nutrients. PubMed · DOI
7Derave W et al. (2010). Muscle carnosine metabolism and β-alanine supplementation in relation to exercise and training. Sports Med. PubMed · DOI
8Yamada S et al. (2021). Balenine: a review of its food sources, physiological functions and analytical methods [verify title/journal]. Food Chem. PubMed

References are being resolved to PubMed/DOI identifiers; links search PubMed for the citation until then.

† Being confirmed by our reviewers against current sources.

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11Page history

31 Oct 2026Profile published — awaiting medical review

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