Zinc Carnosine
Zinc carnosine is a specific compound that repairs and protects your gut lining. It's not the same as regular zinc — it's designed to stay in your stomach longer.
Zinc carnosine (ZnC) is a chelated compound of zinc and L-carnosine that adheres to damaged areas in the gut lining and promotes healing. It's widely used in Japan as a prescription treatment for gastric ulcers and has strong evidence for protecting the gut from NSAID damage.
Good for you if: You take NSAIDs regularly, have gastritis or acid reflux, suspect leaky gut, or want to repair your gut lining after antibiotics or illness.
Dive deeper into the researchCommon side effects
- Mild nausea if taken on an empty stomach
- Metallic taste (rare)
- Can reduce copper absorption long-term at high zinc doses
What does zinc carnosine do?
Your stomach lining takes a beating — from spicy food, NSAIDs (like ibuprofen), stress, and bacteria like H. pylori. Zinc carnosine sticks to damaged areas of the gut lining and promotes healing from the inside. Unlike regular zinc supplements, this compound is designed to slowly dissolve in the stomach, staying in contact with damaged tissue longer.
In Japan, it's been a prescription medication (brand name Polaprezinc) for stomach ulcers since 1994 — with decades of clinical use behind it.
What can you expect?
- Faster gut healing — repairs damaged mucosa and strengthens tight junctions
- Less acid reflux — helps restore the stomach's protective mucus layer
- NSAID protection — prevents the gut damage caused by regular painkiller use
- H. pylori support — enhances antibiotic effectiveness when used together
- Reduced intestinal permeability — helps seal a leaky gut
How to take it
75 mg twice daily — once in the morning and once before bed, both on an empty stomach or 30 minutes before meals. Take for 8–12 weeks for gut repair.
If you're taking it to protect against NSAIDs, take it at the same time as the NSAID.
Important: Zinc carnosine provides about 16 mg of elemental zinc per 75 mg dose. If you're also taking a separate zinc supplement, factor this in to avoid exceeding 40 mg/day of total zinc long-term.
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Get early accessFrequently Asked Questions
Is zinc carnosine the same as regular zinc?
No. Zinc carnosine is a specific chelated compound where zinc is bonded to L-carnosine. This changes how it behaves in your stomach — it dissolves slowly and adheres to damaged tissue, giving it a targeted healing effect that regular zinc supplements don't have. Regular zinc (like zinc bisglycinate) is absorbed systemically; zinc carnosine works locally in the gut.
Can I take zinc carnosine with PPIs?
Yes. Zinc carnosine works through a completely different mechanism than proton pump inhibitors. Studies have actually shown that combining them provides better ulcer healing than either alone. However, check with your doctor before combining supplements with prescription medications.
How long should I take it?
For gut repair, most studies use 8–12 week courses. For NSAID protection, take it as long as you're using NSAIDs regularly. It's safe for long-term use at standard doses, though you should monitor copper levels if taking high zinc doses for more than 3 months.
Does it help with H. pylori?
Zinc carnosine doesn't kill H. pylori directly, but it significantly enhances antibiotic eradication therapy. Studies show that adding zinc carnosine to standard triple therapy improves eradication rates. It also helps heal the gastric damage H. pylori causes.
How zinc carnosine works
Zinc carnosine has a unique polymeric structure that makes it insoluble at neutral pH but slowly soluble in acidic conditions — exactly the environment in a damaged stomach. It adheres preferentially to ulcerated or inflamed mucosa. Once there, it stabilises cell membranes, stimulates growth factors (EGF, IGF-1), increases mucin secretion, and has direct antioxidant activity. The zinc component supports wound healing while carnosine provides anti-inflammatory and antioxidant effects.
What the studies show
- NSAID damage: A double-blind human trial showed zinc carnosine reduced NSAID-induced small intestinal injury by 75% (measured by lactulose/rhamnose permeability test)
- Ulcer healing: In Japanese clinical trials, zinc carnosine healed gastric ulcers at rates comparable to standard anti-ulcer drugs
- Gut permeability: 37 mg twice daily reduced intestinal permeability by 3-fold in a controlled human volunteer study
- H. pylori: Addition to triple therapy improved eradication rates from 77% to 94% in one controlled trial
Side effects & safety
Zinc carnosine is very well tolerated with minimal side effects:
- Nausea — Uncommon. Take with a small amount of food if it occurs.
- Metallic taste — Rare. Usually resolves within a few days.
- Copper depletion — High-dose zinc (above 40 mg/day) over many months can lower copper. Monitor if using long-term.
Who should avoid: People with copper deficiency or Wilson's disease should consult their doctor. Otherwise, zinc carnosine has an excellent safety profile with decades of clinical use in Japan.
Which labs to check
- Zinc (serum or RBC) — make sure you're not overshooting with total zinc intake
- Copper & ceruloplasmin — check if taking zinc long-term (3+ months)
- hsCRP — general inflammation marker that may improve with gut healing
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