Decreased thymus weight, considered secondary to stress and poor condition; reversible
“thymus with correlative decreased thymus weight in both sexes and arterial inflammation or degeneration in males. These findings were most likely secondary to the stress and poor condition of the animals, rather than a direct drug effect, and were reversible after recovery.”
No skin accumulation; reversible melanin binding in the uveal tract with rapid elimination
“These data suggest that viloxazine or its metabolites do not preferentially distribute to or accumulate in the skin; viloxazine and its metabolites reversibly bind to melanin in the uveal tract but are rapidly dissociated or eliminated.”
Seizures/convulsions in multiple species at therapeutically relevant doses
“Viloxazine caused seizures/convulsions in multiple animal species (rat, dog, and mouse) at therapeutically relevant doses, suggesting a potential risk for seizures with chronic use of viloxazine.”