1) Vinson, Kharrat and Andreoli. Effect of Aloe vera preparations on the human bioavailability of vitamins C and E. Research sponsored by the International Aloe Science Council (IASC) and first reported at the 2003 IASC annual conference.
The relative areas were as follows: vitamin C alone 100%, AVG 304 % and AVL 80 %. Thus vitamin C was 3 times more bioavailable when taken with AVG (aloe vera gel) but was 20% / less bioavailable with AVL (aloe vera liquid)
The relative areas were as follows: vitamin E alone using only the above baseline data 100%, AVL 198% and AVG 369%. Thus vitamin E was 2 times more bioavailable with AVL and over 3 times more with AVG. The E absorption was slowed with the Aloe liquids.