Leonurus sibiricus is also known as Siberian motherwort and little marijuana. This bush, reaching 1-2 meters has been used in Asia for many centuries for its relaxing and soothing effects.
In South America and Mexico the herb was nicknamed "marihuanilla" (little marijuana). Mixed in a blend of herbs or used on itself, it's said to be a mild intoxicant.
Marihuanilla is mostly used for its relaxing effects and its pleasant, mild taste. Although it's said to be a mild intoxicant and it has been confirmed that the plant contains alkaloids such as leonurine, it is not exactly known what causes this intoxication.
Traditional Asian use involves soaking 1-3 teaspoons of the herb in hot water for 15 minutes.