Ingredient file // Other
Betaine Anhydrous
A methyl donor with unproven health extras
Betaine anhydrous is a purified compound made from sugar beet processing streams or by chemical synthesis. Dogs use it to move methyl groups through normal metabolism. Feeding studies show changes in blood markers, but stronger gut, immune and kidney claims remain unproven.
- What it is
- A dry, concentrated form of betaine that supplies methyl groups used in normal metabolism.
- Made from
- Sugar beet streams or chemical feedstocks
- Main job
- Supplies methyl groups
- Typical amount
- Commercial amount unpublished; dog trials fed 0.2 to 0.5%
- Watch for
- A separate betaine supplement added to food
- Not the same as
- Betaine hydrochloride
Our read // In our catalog
In 1 of every 79 foods we track
Share of foods that list it
1%
32 of the 2,533 foods with an ingredient list on file, from 3 brands. 30 dry dog food, 2 wet dog food.
Each square is 1% of the catalog
Where it sits on the label
Median position 38. In the top five of 0 foods, so it is usually a minor ingredient.
Above the salt
Usually listed after the salt, which caps it at roughly 1% of the recipe in 96% of foods.
Price per lb
Median of the cheapest bag price across 27 priced foods, 32% above the catalog. The price is the food's, not the ingredient's.
Who leans on it
47%
of the foods that list it are from Verus. 3 brands use it in total.
What it is
How it is made
Sugar refining leaves molasses containing betaine after much of the sugar is recovered. For beet-derived betaine, processors separate and crystallize that compound as an additive. Feed-grade betaine anhydrous can also be made by chemical synthesis.6,7,8
- 01 // Source Beet molasses Sugar refining leaves a syrup containing betaine alongside sugar and other dissolved compounds.
- 02 // Process Separate betaine Chromatography separates a betaine-rich stream while processors recover more sugar from the molasses.
- 03 // Process Crystallize The purified solution is crystallized under conditions that produce the anhydrous form.
- 04 // Output Dry betaine Concentrated crystals reach feed plants as an additive; some preparations also contain an anticaking agent.
What is in it
Composition, dry matter
99.2
% betaine
The lowest dry-matter purity measured in the refined anhydrous samples. This ingredient is chiefly one compound, though feed preparations can contain an anticaking agent.
Why it is in the bag
What the manufacturer gets
-
01
Supplies methyl groups
Dogs use betaine when converting homocysteine to methionine. Controlled feeding studies found higher blood levels of related metabolites after betaine was added.1,2
-
02
Supports specialty formulas
Its methyl-donor role and effects in cell experiments give formulators a reason to test it in gut and immune diets. Benefits in living dogs remain uncertain.2,4,5
-
03
Uses a refinery stream
Separating beet molasses yields betaine alongside more recoverable sugar. That gives sugar processors another product from an existing stream; chemical synthesis supplies an alternative.7,8
How much Dog trials added 0.2 to 0.5% betaine to food; a usual amount across commercial dog foods has not been published.1,2,3,4
Our read // The claims
What the evidence supports
Strong: controlled studies in dogs agree. Some: small or mixed dog data. Thin: mechanism or lab work only. None: nothing, or the evidence points the other way.
-
Brands say
Supplies methyl groups for normal metabolism
Evidence
- Strong
- Some
- Thin
- None
Controlled feeding studies lasting 60 and 90 days found higher circulating dimethylglycine and methionine after betaine was added. That supports its methyl-donor role, but a blood-marker change alone does not show better health.1,2
-
Brands say
Improves gut health and stool quality
Outruns the evidence
Evidence
- Strong
- Some
- Thin
- None
A 21-day trial in 20 Poodles found changes in fecal bacteria and inflammatory markers with added betaine, but no difference in stool score. Canine cell experiments suggest a barrier effect; better digestion in dogs remains unproven.4,5
-
Brands say
Improves omega-3 use in dogs
Outruns the evidence
Evidence
- Strong
- Some
- Thin
- None
A 60-day trial in 48 dogs found a higher change in circulating EPA relative to dietary intake with betaine. It did not directly measure EPA production or show a skin, joint or other health benefit.1
-
Brands say
Protects dogs' kidneys from disease
Outruns the evidence
Evidence
- Strong
- Some
- Thin
- None
In 28 dogs with early kidney disease, diets containing betaine and added soluble fibers lowered creatinine during 10-week feeding periods. Both ingredients changed together, so the study cannot assign the result to betaine or show slower disease progression.3
-
Brands say
Strengthens immune defenses
Outruns the evidence
Evidence
- Strong
- Some
- Thin
- None
A 90-day study in 32 dogs found an altered immune-cell response when betaine and carnitine were combined. Supplier-authored experiments also found effects in canine cells. Neither result shows that betaine alone prevents illness.2,5
Straight answers
What owners ask
-
Q01
Is it just filler?
NoIt has a defined metabolic job: supplying methyl groups. Dog studies measured the expected changes in blood metabolites. Those results support its use as an additive, though they do not justify choosing a food for broad health promises.1,2
-
Q02
Is it the same as beet pulp?
NoBeet pulp is a fibrous ingredient from sugar processing. Betaine anhydrous is a concentrated compound used for its metabolic role, and it can also be synthesized. The ingredient name alone does not reveal which production route was used.6,7
-
Q03
Will it treat kidney disease?
No proofThe kidney study tested betaine and soluble fibers together. Its lower creatinine readings do not show that betaine alone treats kidney disease, and the study did not demonstrate slower progression.3
Who uses it
Brands, best sellers and the company it keeps
Top brands, by foods that list it
Usually listed with, share of the foods that list it
- Chicken Fat 69%
- Brown Rice 63%
- Flaxseed 44%
- Chicken Meal 44%
- Dried Beet Pulp 41%
- Oat Groats 38%
- Natural Flavor 38%
- Menhaden Oil 34%
- Pearled Barley 31%
- Menhaden Fish Meal 28%
- Millet 28%
- Herring Meal 25%
Our read // On the bag
Read it as an additive, not a verdict
Betaine near the vitamin and mineral ingredients signals a small metabolic addition. Judge the food by its main protein and fat sources and whether it is formulated as a complete diet. Do not choose it for a kidney or immune promise based on betaine alone.
Sources
What we read
Checked September 1, 2026.
- 1 Dietary Betaine and Fatty Acids Change Circulating Single-Carbon Metabolites and Fatty Acids in the Dog
- 2 Betaine and L-Carnitine Synergistically Influence the Metabolome and Immune Response in Dogs
- 3 Effect of Added Dietary Betaine and Soluble Fiber on Metabolites and Fecal Microbiome in Dogs with Early Renal Disease
- 4 甜菜碱对宠物犬血液指标和粪便微生物的影响.
- 5 Plant-derived betaine enhances barrier integrity and immune responses in canine intestinal epithelial cells and macrophages under endotoxin challenge
- 6 Safety of betaine as a novel food pursuant to Regulation (EC) No 258/97
- 7 Assessment of the feed additives betaine anhydrous (3a920) and betaine hydrochloride (3a925) for all animal species for the renewal of their authorisations (Orffa Additives B.V.)
- 8 Chromatography