1640s (pharmaceutic in the same sense is from 1540s), from Late Latin pharmaceuticus of drugs, from Greek pharmakeutikos, from pharmakeus preparer of drugs, poisoner (see pharmacy). Related: Pharmaceuticals; pharmaceutically.
White Tongue: A white coating on your tongue could mean that you are dehydrated. It can also be caused by smoking or drinking alcohol. A white coating can also be a sign of thrush, which is an infection of the mouth with the yeast Candida albicans.
Your tongue is the only part of your body that is gives a direct connection to your stomach. The same applies to your colon, but it sure is not something easy to examine. Your tongue can show you what happens inside your body, before you notice any deficiencies and imbalances, and even before the real problem shows up. Take a mirror and look at your tongue. Notice any changes, color, surface, coatings, size, and pretty much everything that could be considered as a sign.