Currently in Australia it is illegal to grow cannabis for your own personal use, while acquiring it on the black market can bring with it with a multitude of problems (outside of its illicit status). Firstly, street-sourced products can fluctuate wildly in potency from one batch to another which makes consistent dosing and titration difficult to achieve.
Secondly, street-sourced products can often be contaminated with bacteria, moulds, heavy metals, solvents, and pesticides that can be harmful when consumed. Therefore, we would strongly recommend using a pharmaceutical-grade cannabis medicine. This would ensure there is consistency of product, along with a guarantee that it is grown under sterile and contaminant-free conditions.