Associate Professor Treasure McGuire is a clinical pharmacist, educator, and researcher. She holds two senior appointments in her hospital role (as Assistant Director of Pharmacy, Practice and Development, Mater Health Brisbane) with 1) Bond University Medical School (as Associate Professor of Pharmacology and 2) The University of Queensland School of Pharmacy (as Associate Professor, Clinical). She is passionate about improving the consumer voice and health outcomes for mothers and babies through the development and access to more effective and safer approaches towards medicines use.
Treasure’s research is translational and evidence-based, focusing on patient centred-care and quality use of medicines in women’s and newborn health, medicines information, medication safety and complementary medicines. She has published widely and authored the chapter on Safe use of drugs while breastfeeding In Brodribb W, ed. Breastfeeding management in Australia, 5th ed, Melbourne: Australian Breastfeeding Association, 2019. She is a regular invited speaker at national and international conferences, with over 60 keynote addresses. In recognition of her services to medicines information, she received the Lilly International Fellowship in Hospital Pharmacy. In 2015, she was the recipient of the Sr Eileen Pollard Medal (Mater Research-UQ) for excellence in incorporating research into clinical care provision.
Cannabis is the most consumed psychoactive drug, with global estimated use approaching 200,000 million people. Legalization in different countries, together with apparent safety perception, has led to increased cannabis use by up to 5% of pregnant and breastfeeding women. This presents significant challenges for health professionals who promote breastfeeding. As central nervous system drugs need to be sufficiently lipophilic to pass the blood brain barrier, there will be extensive cannabis passage into lipophilic breast milk. Pre- and post-natal exposure is likely to impact not only on the mother but may also induce neurobiological alterations in the infant that persist beyond the first 1000 days of life. This presentation will take an evidence-based approach to outline the pharmacology, potential benefits, and risks of the main cannabinoids (THC and CBD) used in their various dose forms (ingested oils, topical gels or inhalation of buds by pipe or vaporizer). It will focus on the available evidence, potential consequences, and considerations when cannabis is used in lactation. Regardless of personal opinion, it is imperative that women feel comfortable to ask questions of their primary health care professionals about cannabis use or misuse while breastfeeding, to promote harm minimization.
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