I need a odorless tasteless quick acting laxative for my grandmother.?

If she won't take a stool softener, which is gentle, you probably don't want to give her a laxative, which may be harsh. Maybe you should get some fiber into her diet, such as kale, mustard, or turnip greens, salads, bran muffins, wassa crackers, or the best, beans or bean soup. But try not give her cheese, bread, peanut butter or anything that is constipating. There are some commercial additives you can put in her water or tea or other drinks that are fiber-filled and tasteless. They're gentle and won't cause cramping.

KSCN (potassium thiocyanate), CO (carbon monoxide), Anthrax, Ebola, Small Pox. The latter three indexed could surely be in powder kind, which can also be viewed as a substance.

I was here on Yahoo Answers for something or other, but this question was shown on the sidebar...

very interesting question