Caffeine anhydrous is basically the powdered form of caffeine, and is commonly used as an additive to nutritional supplements and weight loss pills. In most cases it comes from the same places as ordinary caffeine does; coffee beans, tea leaves, and guarana berries, to name a few. The word “anhydrous” is a chemical term meaning “without water,” and caffeine that is prepared this way is usually dehydrated in a lab and broken down to its base crystals. It is usually a white crystalline powder that dissolves well in water and can be mixed in with many other ingredients relatively easily, and it doesn’t have a defined taste or smell. Energy pills, nutritional supplements, and weight loss drinks and capsules often use this powder in varying degrees in order to improve outcomes and deliver quick boosts of caffeine to users. In small doses the extract is usually considered safe, but people often experience problems when they take too much, the same as they would were they to drink too much coffee or tea. Extreme caffeine consumption can lead to heart problems, headaches, and gastrointestinal distress, among other things