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newest 2023spec sheet11 rows
Zinc L-carnosine, also known by the generic name polaprezinc, is a chelate compound in which a zinc ion is bound to the dipeptide L-carnosine. Developed in Japan, it is used there and in some other countries as a prescription medicine for gastric ulcers and gastritis, and it is sold elsewhere as a dietary supplement for gut and mucosal health. It is valued as a mucosa-protective agent rather than an acid-suppressing drug.
- Repairs stomach lining
- Protects against NSAID irritation
- Supports gut barrier
- Anti-inflammatory at the mucosa
- Antioxidant action
- As a zinc-containing product, prolonged high intake could contribute to copper deficiency
- People with existing copper deficiency should use it under medical supervision
- Sold as a prescription drug in some countries and only as a supplement in others
- Not a substitute for standard ulcer or H. pylori treatment when that is indicated
Overview
Zinc L-carnosine is a chelated compound, marketed under the generic name polaprezinc, formed by joining a zinc ion to L-carnosine, a naturally occurring dipeptide of the amino acids beta-alanine and L-histidine [1][2]. Rather than a simple blend of the two ingredients, it is a defined 1:1 complex with a polymeric structure, and by mass it is roughly one-quarter zinc and three-quarters carnosine [1][2]. The compound was invented by the Japanese firm Hamari Chemicals and was first approved as a pharmaceutical in Japan, where it has long been prescribed for peptic ulcer disease [1][2].
Its principal recognized use is the treatment of gastric ulcers and gastritis; it is classed as a mucosal-protective, or cytoprotective, anti-ulcer agent, meaning it defends and repairs the stomach lining rather than lowering stomach acid [1][2]. It has also shown inhibitory activity against Helicobacter pylori, the bacterium linked to many ulcers, and has been studied as an adjunct in H. pylori eradication [1][2]. Beyond the stomach, reviews describe supportive evidence in oral mucositis, esophagitis, and proctitis arising during cancer radiotherapy, in taste disturbances, and in other gastrointestinal complaints [3].
Regulatory treatment varies by country. In Japan and South Korea it is a prescription drug (sold under names such as Promac), whereas in the United States it is handled as a dietary ingredient, in Australia as a complementary medicine, and in Canada as a natural health product [1]. It is generally well tolerated, and clinical use at customary doses has not been linked to serious side effects, although very high or prolonged intake of any zinc-containing product carries a risk of copper depletion [1][3].
Mechanism
Zinc L-carnosine acts locally at damaged mucosal surfaces rather than through systemic drug action. Because the chelate resists rapid dissociation in gastric acid, it can persist in the stomach and adhere selectively to ulcerated or inflamed tissue, where it slowly releases its zinc and L-carnosine components at the site of injury [1][2]. This targeted delivery is central to its role as a membrane-protective anti-ulcer agent [2].
Once localized, the compound is thought to promote healing through several complementary actions. It scavenges reactive oxygen species and provides antioxidant protection, stabilizes cell membranes, stimulates mucus secretion, and supports the integrity of the mucosal barrier; it has also been reported to dampen pro-inflammatory cytokines and to accelerate the migration and repair of epithelial cells, all without suppressing gastric acid secretion [1][3]. Both constituents contribute: zinc is a cofactor essential to tissue repair and antioxidant defenses, while carnosine has its own antioxidant and anti-inflammatory properties [2][3].
The combination also shows direct activity against Helicobacter pylori, which may aid ulcer healing and reduce recurrence when the compound is used alongside standard eradication therapy [1][2]. Because the effect is largely topical and repair-oriented, zinc L-carnosine is generally grouped with mucosal cytoprotective agents rather than with acid-blocking drugs such as proton pump inhibitors [2][3].
receptor fingerprint
Gastric mucosaprotects and repairs
Intestinal barrierstabilizes
Local inflammationreduces
reduces
Dosingtypical ranges, not medical advice
interested in protocols and clinical dosages? make an account to see them! ^_^
Safetyrisks and cautions, not medical advice
Well tolerated, with the usual mild zinc side effects like occasional nausea. As with any zinc, chronic high intake risks copper deficiency, so long-term high doses should include copper or oversight. It supports but does not replace medical treatment of serious gastric disease.
Subjective profileweighing the evidence above
Same gut-focused zinc as zinc carnosine, just spelled out more precisely. Great for mucosal repair, well tolerated, and worth it if the gut is your target.
Resources
This entry is here for reference.
Research
- 2000first citedApplicability of zinc complex of L-carnosine for medical use
- 2023most recentCarnosine and Beta-Alanine Supplementation in Human Medicine: Narrative Review and Critical Ass…
- 1.Carnosine and Beta-Alanine Supplementation in Human Medicine: Narrative Review and Critical Assessment.
- 2.Applicability of zinc complex of L-carnosine for medical use
- 3.A Review of Zinc-L-Carnosine and Its Positive Effects on Oral Mucositis, Taste Disorders, and Gastrointestinal Disorders
3 listed here; entry last updated August 2026
Reviews
My notesprivate to this device
FAQ
Is this different from zinc carnosine?
No, it is the same complex; L just specifies the natural form of carnosine.
Why does it help the gut specifically?
The chelate sticks to damaged mucosa and supports repair right where it is needed.
Can I take it with acid reducers?
Generally yes, and it is sometimes combined for stomach protection, but check with a doctor.
How long should I use it?
Courses of a few weeks are common; longer high-dose use needs copper balance.
Adverse effects
- As a zinc-containing product, prolonged high intake could contribute to copper deficiency
- People with existing copper deficiency should use it under medical supervision
- Sold as a prescription drug in some countries and only as a supplement in others
- Not a substitute for standard ulcer or H. pylori treatment when that is indicated
Notes and cautions
- Generally well tolerated; the most common complaints are mild stomach upset or constipation