What the evidence says. Graded moderate: it is a licensed ulcer drug in Japan/Korea with consistent RCTs and meta-analyses for ulcer healing, H. pylori eradication and oral mucositis, but most trials are small, short and run in East-Asian populations, and several use it only as an add-on rather than a stand-alone therapy. (Moderate evidence: Several controlled trials; effects real but modest or context-dependent.)
What is Zinc Carnosine?
Zinc Carnosine (Polaprezinc) is a gut and immune supplement used for heal gastric ulcers. NutriDex grades the human evidence as Moderate.Zinccarnosine (polaprezinc) is a chelate of zinc and L-carnosine that adheres to damaged mucosa, where it acts as an antioxidant and stimulates repair. It is an approved gastric-ulcer drug in Japan and South Korea. In a multicentre RCT, 8 weeks of 150 mg/day matched rebamipide for ulcer healing (~81% effective). A meta-analysis of RCTs found adding it to standard triple therapy roughly doubled H. pylori eradication odds (OR ~2.0 intention-to-treat) without extra side effects. Randomised trials in cancer patients show it markedly cuts severe oral mucositis from radio/chemotherapy, and a small crossover study found it blunted NSAID-induced rises in gut permeability. A pooled analysis also confirms it raises serum zinc and corrects deficiency. Limits: most trials are small, short, single-region, and often test it as an add-on, so the size of any stand-alone benefit for general 'gut health' is uncertain.
Purported Benefits
✓Heal gastric ulcers
✓Protect the gut lining
✓Boost H. pylori eradication
✓Ease oral mucositis
✓Correct zinc deficiency
Evidence by outcome
The same supplement can be well-proven for one use and unproven for another — here is the human evidence graded outcome by outcome.
Outcome
Evidence
Effect
Studies
Gastric ulcer healingOne multicentre double-blind RCT (n=224) showed ~81% healing, non-inferior to rebamipide; single trial, 8 weeks only.
Oral mucositis from radio/chemotherapySingle RCT in HSCT patients cut grade greater-or-equal 2 mucositis to 20% vs 82%; striking but small, single-study.
75 mg twice daily (150 mg/day, the licensed dose in Japan/Korea); gut-health supplements typically use 37.5 mg twice daily.
Active Compounds
Zinc (≈23%)L-carnosine (≈77%)
Safety & Cautions
⚠
Generally well tolerated; the most common effects are mild GI upset (nausea, constipation), and dysgeusia or copper depletion can occur with prolonged high-dose zinc, so courses beyond a few weeks should be monitored. Like other zinc products it can reduce absorption of certain antibiotics (tetracyclines, fluoroquinolones), penicillamine and thyroid (levothyroxine) medication — separate doses by 2–4 hours. Rare hepatic and, in case reports, copper-deficiency anaemia/neuropathy have been described; avoid in Wilson's disease and use cautiously in pregnancy given limited data. Educational only — always check with your doctor or pharmacist before combining Zinc Carnosine with any medicine.
Zinc Carnosine is most often taken for Heal gastric ulcers, Protect the gut lining, Boost H. pylori eradication, Ease oral mucositis. Mucosa-protecting zinc complex for ulcers and gut-lining repair.
Does Zinc Carnosine work — what does the evidence say?
Moderate evidence. Several controlled trials; effects real but modest or context-dependent. Zinc carnosine (polaprezinc) is a chelate of zinc and L-carnosine that adheres to damaged mucosa, where it acts as an antioxidant and stimulates repair. It is an approved gastric-ulcer drug in Japan and South Korea. In a multicentre RCT, 8 weeks of 150 mg/day matched rebamipide for ulcer healing (~81% effective). A meta-analysis of RCTs found adding it to standard triple therapy roughly doubled H. pylori eradication odds (OR ~2.0 intention-to-treat) without extra side effects. Randomised trials in cancer patients show it markedly cuts severe oral mucositis from radio/chemotherapy, and a small crossover study found it blunted NSAID-induced rises in gut permeability. A pooled analysis also confirms it raises serum zinc and corrects deficiency. Limits: most trials are small, short, single-region, and often test it as an add-on, so the size of any stand-alone benefit for general 'gut health' is uncertain.
What is the typical dose of Zinc Carnosine?
75 mg twice daily (150 mg/day, the licensed dose in Japan/Korea); gut-health supplements typically use 37.5 mg twice daily.
Is Zinc Carnosine safe? Any cautions or side effects?
Generally well tolerated; the most common effects are mild GI upset (nausea, constipation), and dysgeusia or copper depletion can occur with prolonged high-dose zinc, so courses beyond a few weeks should be monitored. Like other zinc products it can reduce absorption of certain antibiotics (tetracyclines, fluoroquinolones), penicillamine and thyroid (levothyroxine) medication — separate doses by 2–4 hours. Rare hepatic and, in case reports, copper-deficiency anaemia/neuropathy have been described; avoid in Wilson's disease and use cautiously in pregnancy given limited data.
How many studies support Zinc Carnosine?
NutriDex cites 8 sources for Zinc Carnosine, graded "Moderate".
Cite this page
APA
Peh, D. (2026). Zinc Carnosine (Polaprezinc): Benefits, Dosage, Side Effects & Evidence. NutriDex — The Supplement Research Compendium. Retrieved 16 Sept 2026, from https://nutridex.info/s/zinc-carnosine
BibTeX
@misc{nutridex_zinc_carnosine,
author = {Peh, Daryl},
title = {Zinc Carnosine (Polaprezinc): Benefits, Dosage, Side Effects \& Evidence},
year = {2026},
howpublished = {NutriDex --- The Supplement Research Compendium},
url = {https://nutridex.info/s/zinc-carnosine},
note = {Reviewed by Dr Daryl Peh, MBBS Singapore, MMed FM. Accessed 2026-09-16}
}
For medical claims, citing the underlying primary studies linked above is preferred. NutriDex is an educational reference, not medical advice.