Carnosine

Dipeptide / Naturally Occurring Beta Alanyl L HistidineRx: OtcCompound: Research

Also known as: beta-alanyl-L-histidine, Ignotine, L-Carnosine, N-beta-alanyl-L-histidine

Educational Only — Not medical advice. Consult a qualified clinician before using any peptide.

Summary

Carnosine is a naturally occurring dipeptide (beta-alanine + L-histidine) found at high concentrations in skeletal muscle, brain, and heart tissue. It functions as a pH buffer in exercising muscle, a broad-spectrum antioxidant, and an anti-glycation agent. It is widely sold as a dietary supplement and is under active research for applications in aging, metabolic disease, neurodegeneration, and athletic performance.

Mechanism of Action

Acts as a intracellular buffer (pH regulation), antioxidant (scavenges reactive oxygen species and reactive carbonyl species), metal ion chelator (zinc, copper), inhibitor of glycation and carbonylation, and modulator of muscle contractility via interaction with actin-myosin cross-bridges.

Routes of Administration

OralTopical

Goals & Uses

  • Exercise performance and muscle bufferingAthletic PerformanceModerate
  • NeuroprotectionNeurologyLow
  • Metabolic syndrome / glycemic controlMetabolic HealthModerate
  • Wound healing and skin anti-agingDermatologyLow
  • Ocular health (cataracts)OphthalmologyLow
  • Anti-aging / cellular protectionLongevityLow

Contraindications

  • Known hypersensitivity to carnosine or beta-alanineAllergyHigh
  • Carnosinemia (carnosinase deficiency)Metabolic DisorderHigh

Adverse Effects

  • Gastrointestinal discomfortGastrointestinalUncommon
  • Neurological effects in carnosinemiaNeurologicalRare
  • Paresthesia / tinglingNeurologicalUncommon

Drug Interactions

  • Zinc supplements / zinc-containing compoundsLow
  • Antidiabetic agentsLow

Population Constraints

  • Renal impairmentOrgan ImpairmentRelative
  • Pediatric populationsAgeRelative
  • Pregnancy and lactationReproductiveRelative

Regulatory Status

  • European UnionUnapprovedAvailable as a food supplement; no EMA drug approval.
  • United StatesUnapprovedSold as a dietary supplement (DSHEA); not FDA-approved as a drug for any indication.
  • United KingdomUnapprovedAvailable OTC as a supplement; no MHRA drug approval.

Classified as a dietary supplement in the United States (not FDA-approved as a drug). Not approved as a pharmaceutical in the EU or UK. Research use in various jurisdictions. L-Carnosine supplements are commercially available OTC worldwide.

Evidence & Sources

No sources recorded yet.

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