The red pill is Ma Gu, and the appearance of Ma Gu is mostly round and flaky. Berberine tablets are about the size of ecstasy, and generally have rose, orange, apple green and other colors. The added pigments and spices have different colors and flavors, and are printed with marks such as "R", "WY", "66" and "888".

The main ingredient is ice, which is processed borneol and has a strong addiction. After taking it, it will make people's central nervous system and blood system extremely excited, and can make people's physical strength and immune function fail. Long-term use will lead to depression, fatigue, mental disorder, heart, kidney and liver damage, and even death in severe cases.