Is mate a drug?
The caffeine in yerba mate is a stimulant drug. Ephedrine is also a stimulant drug. Taking caffeine with ephedrine might cause too much stimulation and sometimes serious side effects and heart problems.
What is mate used for?
Mate is a plant. The leaves are used to make medicine. Mate is used as a stimulant to relieve mental and physical tiredness (fatigue), as well as chronic fatigue syndrome (CFS). It is also used for heart-related complaints including heart failure, irregular heartbeat, and low blood pressure.