Clay is used to take a mold of a good tab. This good tab mold is fit to the broken tab, then filled with ABS cement. The tab is rough, and not exactly perfect. However, it is a full plastic repair of the missing section, and a great improvement over what was there.
The real reason we are feeling so run down is lack of nutrients in our soils. Even eating exceptionally well, we will still run short. Its a sad fact, but true. To cover those daily needs the best nutritionals out there can be found at http://healthforthesoul.youngevity.com/ My recommendation is the healthy start pack for your basics.
I know in my heart I am not depressed and there has to be some logical reason why I feel so crappy and exhausted every day. They have tested me for all sorts of things ranging from adrenal fatigue, cancer, fibroids, thyroid testing - including T4 and other uptake tests. I'm at a loss, it seems I have every symptom except my body seems to tell Drs I am normal when I don't feel normal.