A valuable negative result: an antioxidant rationale did not become a demonstrated feline survival benefit in this trial.
The atlas separates a biological hypothesis, a canine or feline measurement, a controlled clinical result and a commercial longevity claim. They are not interchangeable.
What was actually measured?
Survival Time, Clinical-Sign Severity And Oxidative-Stress Measures
double-blind placebo-controlled studyCats with CKD were randomized to vitamin E or placebo in addition to standard therapy.
34 cats with CKD; healthy cats were also included for biomarker comparison · vitamin E did not prolong survival and did not reduce clinical-sign severity
LimitationSmall CKD cohort, 24-week supplementation phase and condition-specific context.
No human-to-pet conversion.
No dose is provided. The study does not justify starting, stopping or changing supplements without the treating veterinarian.
“Pet supplement” is not a universal legal category.
FDA does not recognise a separate dietary-supplement category for animal products; depending on intended use, products are regulated as animal food or animal drugs. Disease-treatment or prevention claims can indicate new-animal-drug intent.
Open FDA source →Trace every material statement.
Page data version: 2026-08-18. Medical review is not claimed without a named sign-off.