Plant materials and preparation of herb extracts The herbs used were: Allium
sativum L. (garlic), A. paniculata (Burm. f.) Wall. ex Nees (Acanthaceae) (The
Creat), Cassia alata L. (Leguminosae) (candlebrush), Garcinia mangostana (Linn.)
(mangosteen), P. guajava L. (Myrtaceae) (guava), and Streblus asper Lour. (Moraceae)
(tooth brush tree)