Standardization of Andrographis paniculata, Mitracarpus scaber and Nauclea latifolia Herbal Preparations as per European and Nigerian Drug Regulations Journal title: European Journal of Medicinal Plants Authors: Sunday J. Ameh, Nneka Ibekwe, Aminu Ambi, Obiageri Obodozie, Mujtaba Abubakar, Magaji Garba, Herbert... Subject(s):