Coca tea should be enjoyed in moderation, and the best time to do that is after a meal when it will also help your digestion. Drinking mate de coca on empty stomach is not wrong, however. For instance, you can drink coca tea or chew one or two teaspoons of leaves five minutes before a meal.
As you know, mate de coca helps reduce excessive appetite. This effect is typically felt within 30-60 minutes after intake, so there is no need to worry if you don’t feel it at once.
Consuming coca products before going to bed is not recommended because you are likely to experience difficulty falling asleep. It is best to stop taking the tea within 3-4 hours before sleep.