Illustration of caffeine molecules in a blood vessel. Caffeine is a stimulant drug found in the seeds and leaves of certain plants where it acts as a pesticide. It is found in tea, coffee and chocolate and is the world's most widely consumed psychoactive drug. | |
Lizenzart: | Lizenzfrei |
Credit: | Science Photo Library / NEMES LASZLO |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |