How does Doc Frank ensure the quality and purity of the Sutherlandia frutescens used in his products, avoiding contaminants like heavy metals or pesticides?

Reputable brands like Doc Frank (through Integrow Health SA) are expected to adhere to Good Manufacturing Practices (GMP). This includes ethically sourcing the Sutherlandia (often from its native South Africa), verifying the botanical identity, and conducting rigorous third-party testing for purity, potency, and the absence of contaminants like heavy metals and pesticides.