How is Posology relevant to Rongoa Maori?

Posology, which concerns itself with the dosage of medicines, would certainly be relevant to Maori Rongoa when making up herbal concoctions, and when dispensing them to patients. It is highly important, when dealing with substances that might be toxic in the wrong amounts, to develop a table of the proper amounts and strengths of your medicaments in order to avoid causing harm to your patients.