Thank you edzone9, nullzero, ASaffron, jegpg1, fruitlovers, cbss_daviefl, ScottR, marklee, CoPlantNut, kimi & jez251 for your kind words and help.
He's always been a healthy eater, almost too picky. Always with greens, veggies & fruits. Been juicing a lot lately as well. We'll read into all link suggestions. I will contact those who have leaves readily available.
Kimi - what's the difference between aloe Arborescens and aloe vera Barbadensis? Did your sister specifically use arborescens or just regular aloe vera?
Again, thank you very much to everyone that's offered help.