Caffeine patch

A caffeine patch is a type of a transdermal patch designed to deliver caffeine to the body through the skin. The concept is similar to that of a nicotine patch.

Caffeine is a stimulant of the methylxanthine class. It is mainly used recreationally to increase alertness in beverage form. Caffeine's structure is similar to that of adenosine, a naturally occurring molecule that has many physiologic effects on the body. Due to caffeine's popularity as the world's most consumed drug, it has been altered to several forms for use such as beverages, pills, and patches.