File:Guarana-energy-supplement.jpg

Title: (or description)
Guarana herbal supplement, often marketed for "energy", labelled on the back as contributing to "alertness" and "reduction of mental fatigue" - and containing additional caffeine.

Author: (or citation)
https://me-pedia.org

Source: (e.g. internet address)
https://me-pedia.org photo by user Notjusttired