The Agriculture Department of Malaysia has prohibited the commercial farming of guarana due to potential harm to the country's rubber industry. The ban is enforced under the Quarantine Act 1976 and Plant Quarantine Regulation 1981, and is also in compliance with Brazilian law. The department has cautioned that unauthorized cultivation could lead to the introduction of new diseases and legal action from the Brazilian government. Additionally, the importation of plants from countries endemic to the South American Leaf Blight disease, which can harm rubber crops, is restricted except for research purposes.