ABSTRACT
Medicinal plants have been used in traditional medicine for several thousand years all over the world. In this sense, information from Brazilian ethnic groups on folk medicine have contributed to the discovery of pharmacological activities from various plant-derived agents potentially leading to the innovative drugs. The Caatinga (semi-arid) vegetation is a highly threatened biome, covering a vast area in northeastern Brazil and has suffered from strong human influence for many decades. Many plants species found in the Caatinga have been widely used in folk medicine and for commercial manufacturing of phytotherapeutic products. Thus, the present review aims to disseminate to the scientific community some known species of medicinal plants found in the Caatinga that have been studied and analyzed in pharmacological scientific assays. Among the species that stood out for their local importance and multiplicity of uses were: Amburana cearensis (umburana-de-cheiro), Anadenanthera colubrina (Vell.) Brenan (angico-branco), Anacardium occidentalis L. (cajueiro), Bauhinia forficata Link (mororó), Cissus sicyoides L. (insulina-vegetal), Myracrodruon urundeuva Allemão (aroeira-do-sertão) and Zingiber officinalis L. (gengibre). The present study shows that several herbal constituents from Caatinga plants, whose pharmacological actions have been well characterized, may be relevant candidates for future and innovative therapeutic development.
ABSTRACT
BACKGROUND: The public health system in Brazil is insufficient to provide basic pharmaceutical and medical care to the population. Currently, some herbal therapy programs are being developed in primary healthcare services to supply the communities lacking basic medicines. OBJECTIVE: To investigate the use of herbal medicines in primary health care in Maracanaú, a northeast Brazilian city. METHODS: A descriptive cross-sectional study was conducted in family health care units in Maracanaú during August and September of 2002. Two hundred twenty-six patients were interviewed via structured questionnaire. Descriptive statistical analysis was accomplished using sample size and proportions. Chi2 and Student's t-tests were used to compare percentages and means, respectively. RESULTS: Among the 226 patients interviewed, 144 (63.7%) reported previous use of herbal medicines. Among those, 131 (90.9%) observed therapeutic benefits from herbal medicines. We identified 10 types of herbal medicines in the prescriptions, including syrups, dyes, capsules, and ointments, for the treatment of respiratory problems (63.8%), skin conditions (15.3%), diabetes mellitus (11.4%), and other illnesses. Further, we observed that some herbal medicines were not being produced during the study period and that several patients were not aware of the fact that they were receiving herbal medicine. CONCLUSIONS: Data support the use of herbal therapy in primary health care in Maracanaú. However, there is a need to conduct further study on the efficacy and safety of these herbal medicines, as well as on their quality control.
