Chaparral is one of the best herbal antibiotics, being useful against bacteria, viruses and parasites, both internally and externally. It may be taken internally for colds, flus, inflammation of the respiratory and intestinal tracts, diarrhea and urinary tract infections. It can be taken internally either as a tincture, powder or tea. Its antibiotic, alterative properties are heightened when combined with other alterative herbs such as echinacea, goldenseal, garlic or usnea. The Way of Herbs by Michael Tierra C.A.,N.D. Pg.139