Cambodia’s Ministry of Health (MOH) has issued a notification reminding advertisers of health products and cosmetics in the country to obtain the required advertising approvals from the MOH. Issued on April 21, 2023, MOH Notification Letter No. 2198 on the Unauthorized Advertising of Modern Medicines, Traditional Medicines, Health Supplements, Medical Devices, and Health Supporting Products confirms that the MOH is aware of unauthorized advertising taking place in Cambodia, and signals its intention to increase enforcement efforts. It is therefore important for advertisers not yet in possession of the necessary approval to obtain the required advertising authorizations before marketing their health products in Cambodia. Advertising Framework for Health Products in Cambodia To legally advertise a health product in Cambodia, it must first be registered with the MOH (except for cosmetics, which only require notification). Only then can advertising approval be sought from the MOH, which will review the content of the proposed advertisement for compliance with Cambodian law. Approval is subject to a time limit, depending on the manner of advertising. All forms of advertising are covered under the MOH’s purview, including online, offline, business-to-consumer (B2C), business-to-business (B2B), promotion to healthcare professionals, and any other form of advertising. Key regulations prescribing general advertising rules are the Law on Consumer Protection, the Law on E-commerce, and the Sub-Decree on the Management of Commercial Advertising of Products and Services. However, product-specific regulations may also apply, depending on the type of product. For example, certain products may be subject to the regulation that sets rules for trading cosmetics in Cambodia, the (amended) Law on the Management of Pharmaceuticals, or others. Usually, product-specific regulations apply first, with the general product advertising rules being applied in addition wherever they do not conflict with the product-specific regulations. A key issue found among both general and product-specific