ABCB1 and Alzheimer disease: Furthermore, its unique physicochemical, pharmacokinetic, and biological qualities make sulforaphane an effective AD treatment, including efficient gastrointestinal absorption, drug-like properties, absence of CYP450 enzyme inhibition, not being a substrate for P-glycoprotein, ability to cross the blood–brain barrier, glutathione S-transferase substrate, immunostimulant effects, and antagonistic neurotransmitter effects.