The US Food and Drug Administration has issued a warning to consumers that ingesting pure powdered caffeine sold in bulk online is not a great idea. The product can be up to 100% caffeine, and a single teaspoon of the stuff is like drinking 25 cups of coffee all at once. FDA blames the death of at least one teen on the use of this product.
Pure caffeine is a powerful stimulant and very small amounts may cause accidental overdose. Parents should be aware that these products may be attractive to young people.