Sodium selenite
supplement · base score -1
What is it?
Sodium selenite is a supplement added for a specific benefit. Graded poor: cheap, vague or of questionable value, so it drags a product’s score down.
At a glance
- Category
- supplement
- Grade
- poor
- Base score
- -1 (from −1 to 1; higher is better)
- Found in
- 51 products
- Also listed as
- -
Common questions about sodium selenite
Is Sodium selenite good for dogs?
We grade it as a poor ingredient: typically cheap, vague or of questionable nutritional value, so it drags a product’s score down. One poor ingredient does not make a food bad on its own, but a recipe built from several usually scores low.
How many UK dog foods contain sodium selenite?
51 UK products list sodium selenite as an ingredient in our database. The full list is shown below, sorted by rating.
How does Open Dog Food grade sodium selenite?
We grade it poor, our lowest grade, used for cheap, vague or low-value ingredients. Every ingredient is converted to its dry-matter share and scored from our glossary before a recipe gets its 1-100 rating; the full method is on our methodology page.
What is sodium selenite in dog food?
Sodium selenite is an inorganic compound used to provide selenium, an essential trace mineral. It appears on pet food labels as a mineral supplement. Selenium is required in very small amounts to support normal bodily functions.
Is sodium selenite safe for dogs?
It is considered safe when included at regulated levels because selenium is toxic only at much higher amounts. Pet food manufacturers must follow maximum permitted levels in the UK and EU. Some owners prefer organic selenium forms, but sodium selenite remains a common mineral source.



