There is a case study that mentions haloperidol in the most recent Breastfeeding Medicine Journal. But, I don't have access to see full text. Maybe it will help you.
Case Report
Adverse Events in a Breastfed Infant Exposed to Risperidone and Haloperidol
Faruk Uguz
Breastfeeding Medicine, Vol. 14, No. 9, November 2019: 683-684.
https://www.liebertpub.com/toc/bfm/14/9#utm_source=ETOC&utm_medium=email&utm_campaign=bfm
----------------------------------------------------------------------
Date: Sun, 10 Nov 2019 17:34:49 +0000
From: "Duret, Anne" <[log in to unmask]>
Subject: Haloperidol
We have a patient who gets a Haldol injection once a month, 75mg IM. Hale rates this med as an L3 - probably compatible but the doses in his cited studies are smaller than one our patient gets. Anyone know if there is any reason to caution her about breastfeeding with this dose? Frank Nice?
Thanks
Anne Duret RNC, IBCLC
Sacred Heart Medical Center
Springfield, OR
***********************************************
Archives: http://community.lsoft.com/archives/LACTNET.html
To reach list owners: [log in to unmask]
Mail all list management commands to: [log in to unmask]
COMMANDS:
1. To temporarily stop your subscription write in the body of an email: set lactnet nomail
2. To start it again: set lactnet mail
3. To unsubscribe: unsubscribe lactnet
4. To get a comprehensive list of rules and directions: get lactnet welcome