ZINC L-CARNOSINE
Zinc L-Carnosine (polaprezinc) is a chelated complex of zinc and L-carnosine designed to adhere to the gastrointestinal mucosa for targeted mucosal protection. It supports gut barrier integrity, promotes wound healing, and exhibits antioxidant and anti-Helicobacter pylori activity.
Zinc L-Carnosine is a chelated complex of zinc and the dipeptide L-carnosine, primarily used for gastrointestinal health and mucosal protection. It works by stabilizing gut integrity, reducing inflammation, providing antioxidant effects, and stimulating repair processes in the digestive tract. The compound is also being investigated for potential benefits in immune function, wound healing, and metabolic health.
Research
Reported Effects
Illness Prevention:: Highly effective for immune support when taken consistently, with users reporting 50-100mg zinc reducing cold frequency and severity dramatically. Gut Health:: Particularly effective for protecting intestinal lining and healing gastrointestinal damage, especially NSAID-induced issues. Individual Variability:: Effectiveness depends heavily on baseline zinc status, with deficient individuals seeing most dramatic benefits. Timing Matters:: Most effective when taken at first signs of illness or used preventatively rather than waiting until symptoms are severe
- Highly effective for immune support when taken consistently, with users reporting 50-100mg zinc reducing cold frequency and severity dramatically
- Particularly effective for protecting intestinal lining and healing gastrointestinal damage, especially NSAID-induced issues
- Effectiveness depends heavily on baseline zinc status, with deficient individuals seeing most dramatic benefits
- Most effective when taken at first signs of illness or used preventatively rather than waiting until symptoms are severe
Safety Profile
Safety Profile: Zinc L-Carnosine
Common Side Effects
- Mild nausea and constipation
- Metallic taste
- Headache
- Mild abdominal discomfort
- Copper depletion risk with chronic use (same as zinc carnosine; these are the same compound, with "L-carnosine" specifying the L-isomer)
Serious Adverse Effects
- Copper deficiency: The primary long-term concern; zinc doses above 40 mg/day elemental zinc increase risk significantly; can cause irreversible neurological damage (copper-deficiency myelopathy) if unrecognized
- High-dose zinc toxicity: severe GI symptoms, dehydration
- Immune dysfunction with chronic excessive zinc intake
- Rare hypersensitivity reactions
Contraindications
- Known allergy to zinc or carnosine
- Pre-existing copper deficiency
- Wilson's disease
- Severe renal insufficiency
- Concurrent high-dose zinc from other sources exceeding the tolerable upper intake level (40 mg elemental zinc/day for adults)
Drug Interactions
- Fluoroquinolone and tetracycline antibiotics: Chelation reduces antibiotic absorption; space dosing by at least 2 hours
- Penicillamine and trientine: Mutual absorption interference
- Bisphosphonates: Zinc may reduce absorption; separate dosing
- Thiazide diuretics: Increased zinc excretion
- Copper supplements: Often co-administered to prevent depletion; standard ratio is 15 mg zinc : 1 mg copper
Population-Specific Considerations
- Identical to zinc carnosine: Zinc L-carnosine and zinc carnosine refer to the same chelated compound (zinc bonded to L-carnosine)
- GI health: Well-studied for gastric mucosal protection, NSAID-induced GI damage, and intestinal permeability
- Recommended monitoring: Serum zinc, copper, ceruloplasmin, and CBC with differential for long-term users
- Pregnancy: Zinc is essential during pregnancy, but supplemental zinc carnosine specifically lacks pregnancy safety data; standard prenatal zinc supplementation is preferred
- Elderly: May benefit from GI mucosal support; monitor copper status especially in those with marginal nutrition
Pharmacokinetic Profile
Molecular Structure
- Formula
- C9H12N4O3Zn
- Weight
- 289.6 Da
- PubChem CID
- 9817450
- Exact Mass
- 288.0201 Da
- TPSA
- 109 Ų
- H-Bond Donors
- 2
- H-Bond Acceptors
- 6
- Rotatable Bonds
- 5
- Complexity
- 254
Identifiers (SMILES, InChI)
InChI=1S/C9H14N4O3.Zn/c10-2-1-8(14)13-7(9(15)16)3-6-4-11-5-12-6;/h4-5,7H,1-3,10H2,(H3,11,12,13,14,15,16);/q;+2/p-2/t7-;/m0./s1
IGXZLYMCFZHNKW-FJXQXJEOSA-LSafety Profile
Common Side Effects
- Copper Depletion:: Most commonly reported issue with long-term high-dose zinc (>40mg daily), causing fatigue, anemia, neurological symptoms, and white hair
- Mood Changes:: Some users report irritability, anger, or anhedonia with excessive zinc intake, particularly doses above 25mg daily
- Nausea:: Taking zinc on empty stomach commonly causes stomach upset; best taken with food to minimize gastrointestinal discomfort
- Mineral Imbalances:: Long-term supplementation without copper can lead to trace mineral deficiencies requiring comprehensive supplementation or blood testing
References (8)
- [8]A comparison of the cellular actions of polaprezinc (zinc-L-carnosine) and ZnCl2
→ Polaprezinc demonstrated superior cellular protection compared to zinc chloride under oxidative stress conditions while providing similar zinc-related benefits, indicating the carnosine component adds protective value.
- [1]Zinc carnosine, a health food supplement that stabilises small bowel integrity and stimulates gut repair processes
→ Zinc carnosine significantly reduced indomethacin-induced intestinal damage in animal models and improved gut permeability in human volunteers, demonstrating protective effects on small bowel integrity and stimulation of gut repair mechanisms.
- [2]Efficacy of zinc carnosine in the treatment of colorectal cancer and its potential in combination with immunotherapy in vivo
→ Zinc-L-carnosine showed anti-tumor effects in colorectal cancer models by inhibiting proliferation, invasion, and migration while enhancing the tumor immune microenvironment, suggesting potential as adjuvant cancer therapy.
- [3]Zinc L-Carnosine Protects CCD-18co Cells from L-Buthionine Sulfoximine-Induced Oxidative Stress via the Induction of Metallothionein and Superoxide Dismutase 1 Expression
→ Zinc L-carnosine protected colon cells from oxidative stress by upregulating antioxidant enzymes metallothionein and superoxide dismutase 1, demonstrating cellular protective mechanisms.
- [4]Polaprezinc (Zinc-L-Carnosine Complex) as an Add-on Therapy for Binge Eating Disorder and Bulimia Nervosa, and the Possible Involvement of Zinc Deficiency in These Conditions: A Pilot Study
→ In a 16-week trial, polaprezinc (150mg/day) significantly reduced binge eating episodes and improved zinc deficiency symptoms in patients with binge eating disorder and bulimia nervosa receiving antidepressants.
- [5]Drug repositioning of polaprezinc for bone fracture healing
→ Polaprezinc accelerated bone fracture healing in mouse models by enhancing osteogenesis and osteoclast differentiation, suggesting potential as a supplement for skeletal tissue engineering and recovery.
- [6]Zinc, Carnosine, and Neurodegenerative Diseases
→ Review discusses how zinc-carnosine complex shows protective effects against neurodegenerative diseases including Alzheimer's and vascular dementia through antioxidant, metal chelating, and anti-glycation mechanisms.
- [7]The role of Zinc L-Carnosine in the prevention and treatment of gastrointestinal mucosal disease in humans: a review
→ Comprehensive review indicates zinc L-carnosine is effective for treating gastric ulcers, NSAID-induced damage, and maintaining gastrointestinal mucosal integrity through multiple protective mechanisms.