Glutamine
Last updated: February 11, 2026
Table of Contents
Quick Summary
Glutamine Amino acid that serves as fuel for intestinal cells and immune system, supporting gut health and recovery from stress or illness.
What It Is
Amino acid that serves as fuel for intestinal cells and immune system, supporting gut health and recovery from stress or illness.
Compare to Similar Ingredients
- vs. glutathione: Both support cellular health. Glutamine is an amino acid that supports gut health and immune function, while glutathione is an antioxidant tripeptide made from glutamine, cysteine, and glycine.
- vs. l carnitine: Both are amino acid derivatives. Glutamine supports gut lining and immune function, while L-carnitine transports fatty acids for energy production and supports heart and muscle function.
Why It's Used in Dog Products
Manufacturers include glutamine in dog food, treats, and supplements for several reasons:
- Supports intestinal health and gut barrier function
- Fuels rapidly dividing cells (gut lining, immune cells)
- Aids recovery from stress, illness, or intense exercise
- May reduce intestinal inflammation and leaky gut
- Supports immune system function
Nutritional Profile
Quality Considerations
When evaluating glutamine in dog products, it's important to understand clinical evidence, appropriate dosing, and targeted health benefits. This ingredient's quality and appropriateness can vary significantly based on sourcing, processing, and the specific formula it's used in.
Conditionally essential amino acid—dogs produce it but may need supplementation during stress, illness, or GI issues. Particularly valuable for dogs with inflammatory bowel disease, food sensitivities, or recovering from illness. Quality L-glutamine is well-absorbed.
Potential Concerns
While glutamine can be appropriate in dog nutrition, pet owners should be aware of efficacy, quality of source material, and potential interactions with medications. Individual dogs may respond differently to the same ingredient based on their health status, age, and sensitivities.
Highly beneficial for gut health and recovery support. Especially valuable for dogs with digestive issues, food sensitivities, or during recovery from illness or surgery. One of the best-researched gut health supplements.
Frequently Asked Questions
Is glutamine safe for dogs?
Yes, glutamine is safe for dogs when used appropriately in properly formulated dog food. Generally recognized as safe when used appropriately As with any ingredient, individual dogs may have sensitivities, so monitor for any adverse reactions when first introducing products containing this ingredient.
What does glutamine do in dog products?
Glutamine in dog food. Dog food manufacturers include this ingredient to support intestinal health and gut barrier function and provide fuels rapidly dividing cells (gut lining, immune cells).
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