There is no definitive answer to this question, as the effects of juniper on humans have not been extensively studied. However, some experts believe that juniper may indeed have hallucinogenic properties, due to its high concentrations of thujone. Thujone is a chemical compound found in several plants, including wormwood and sagebrush, that has been shown to produce psychoactive effects in animals. Therefore, it is possible that consuming large amounts of juniper could lead to hallucinations in humans as well. However, more research is needed to confirm this theory.