This document discusses different policy instruments used for public health regulation, including taxation and regulation. It covers topics like neo-liberalism, market failures, and different policy tools governments can use like economic incentives, information provision, and direct regulation. Taxation is discussed as a policy tool for health promotion by discouraging unhealthy products and redistributing wealth to improve health equity. The document suggests taxation can achieve representation, revenue generation, redistribution, re-pricing of goods, and regulation to support public health goals.