Guayusa tea is not a derivative of marijuana and consuming it should not cause you to test positive for cannabis on a drug test. While guayusa shares some aromatic properties that may remind you of marijuana, it is not chemically related to cannabis. Guayusa is a plant native to the Amazon Rainforest, known for its stimulant properties due to caffeine content, but it does not contain THC or other cannabinoids found in marijuana that are typically screened for in drug tests.
Therefore, you can continue to enjoy guayusa tea without concern regarding drug testing. If you have ongoing concerns, consulting with medical professionals or your employer's HR department regarding permissible substances might provide additional reassurance.