C01BB: Antiarrhythmics, class Ib

C01BB Antiarrhythmics, class Ib is part of the WHO ATC classification system and belongs to C Cardiovascular system > C01 Cardiac Therapy > C01B Antiarrhythmics, Class I and Iii. This chemical subgroup page helps users identify more specific classifications and related active ingredients associated with this ATC code. It also includes 4 related active ingredients, supporting deeper navigation across ingredient-level pages. Use this page to explore the ATC hierarchy, review connected groups, and find relevant ingredient pages within Pharmassive.