Librería Samer Atenea
Librería Aciertas (Toledo)
Kálamo Books
Librería Perelló (Valencia)
Librería Elías (Asturias)
Donde los libros
Librería Kolima (Madrid)
Librería Proteo (Málaga)
Describes the effects of vitamins as nutraceuticals in chronic diseases, such as in treating cancer through antitumor and antioxidant activity, for improving the immunity of patients with HIV and AIDS, for the treatment of tuberculosis, for peptic ulcers, for infectious diseases (including COVID-19), etc.