> In future studies it has to be explored, for example, how loperamide can be transported into the brain and cross the blood-brain barrier. Nanoparticles might

> In future studies it has to be explored, for example, how loperamide can be transported into the brain and cross the blood-brain barrier. Nanoparticles might be a feasible option. Isn't the low-tech option simply to substitute loperamide for heroin, an opiate that's extremely effective at crossing the blood-brain barrier?