Articles recognized in official pharmacopeias and formularies, including official homeopathic pharmacopeias, or any documentary supplement to any of them, which are recognized and adopted by the FDA;

Articles intended for use in the diagnosis, cure, migration, treatment, or prevention of disease in man or other animals;

 articles (other than food) intended to affect the structure of any function of the body of humans or animals

articles intended for use as a component of any articles specified in clauses (1), (2), or (3) but do not include devices or their components, parts or accessories.