House Bill No. 1933, also known as the "Maddix Bias Act," aims to regulate the sale and use of nitrous oxide in Oklahoma. The bill defines nitrous oxide and prohibits its sale to individuals under the age of twenty-one, requiring proof of legal age for purchases. It establishes penalties for violations, including misdemeanors punishable by up to ninety days of imprisonment or fines up to $5,000. Additionally, the bill outlines specific conditions under which the distribution and possession of nitrous oxide are considered unlawful, particularly when exceeding sixteen grams or when sold in conjunction with drug paraphernalia to minors.

The legislation includes several exceptions, allowing for the medical use of nitrous oxide by licensed practitioners, as well as its use in food products, automotive applications, and industrial purposes. It also stipulates that businesses violating the law may face suspension of their business licenses if they have prior convictions for similar offenses. The act is set to take effect on November 1, 2025.