Because no information is available on the use of loxapine during breastfeeding, an alternate drug may be preferred, especially while nursing a newborn or preterm infant.
Drug Levels
Maternal Levels. Relevant published information was not found as of the revision date.
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
Loxapine can elevate serum prolactin.[1] The hyperprolactinemia is caused by the drug's dopamine-blocking action in the tuberoinfundibular pathway.[2]
The prolactin level in a mother with established lactation may not affect her ability to breastfeed.
Meltzer HY, Fang VS, Goode DJ. Prolactin and neuroleptics: Clinical implications for efficacy and toxicity. The effect of neuroleptics and alpha-methyl-para-tyrosine on serum prolactin levels in laboratory animals and man. Psychopharmacol Bull. 1978;14:5–7. [PubMed: 625539]
2.
Maguire GA. Prolactin elevation with antipsychotic medications: Mechanisms of action and clinical consequences. J Clin Psychiatry. 2002;63 Suppl 4:56–62. [PubMed: 11913677]
Substance Identification
Substance Name
Loxapine
CAS Registry Number
1977-10-2
Drug Class
Breast Feeding
Lactation
Antipsychotic Agents
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