Canna~Fangled Abstracts Commercial herbal medicines used as African traditional medicines: Ngoma Herbal Tonic Immune Booster interferes with a rapid urine drug screening test. S Afr Med J. 2017 Aug 25;107(9):734-737. doi: 10.7196/SAMJ.2017.v107i9.12197. Mothibe ME1, Osuch E, Kahler-Venter CP.…Freedom WaresAugust 25, 2017