CASRN: 46817-91-8
Drug Levels and Effects
Summary of Use during Lactation
The amounts of viloxazine and its active metabolite in milk appear to be low. If viloxazine is required by the mother of an older infant, it is not a reason to discontinue breastfeeding, but until more infant outcome data become available, an alternate drug may be preferred, especially while nursing a newborn or preterm infant.
Drug Levels
Maternal Levels. The manufacturer reports a study in 15 lactating women took viloxazine 600 mg daily for 3 days. The mean total amounts of viloxazine and its metabolite, 5-HVLX-gluc excreted in 24 hours at steady-state were 0.511 mg and 0.0357 mg, or 0.085 mg/kg and 0.00595 mg/kg, respectively in a 6 kg infant. These amounts were estimated to result in a relative infant dose of 1% and 0.07%, respectively.
Infant Levels. Relevant published information was not found as of the revision date.
Effects in Breastfed Infants
Relevant published information was not found as of the revision date.
Effects on Lactation and Breastmilk
Relevant published information was not found as of the revision date.
Alternate Drugs to Consider
(ADHD) Amphetamine, Dextroamphetamine, Lisdexamfetamine, Methylphenidate
Substance Identification
Substance Name
Viloxazine
CAS Registry Number
46817-91-8
Drug Class
Breast Feeding
Lactation
Milk, Human
Adrenergic Uptake Inhibitors
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Publication Details
Publication History
Last Revision: February 15, 2025.
Copyright
Attribution Statement: LactMed is a registered trademark of the U.S. Department of Health and Human Services.
Publisher
National Institute of Child Health and Human Development, Bethesda (MD)
NLM Citation
Drugs and Lactation Database (LactMed®) [Internet]. Bethesda (MD): National Institute of Child Health and Human Development; 2006-. Viloxazine. [Updated 2025 Feb 15].