The use of medicinal plants in traditional medicine is a common practice in developing countries. However, this unregulated or irrational use may pose a risk of toxicity to humans in the short and/or long term. Recent studies reported interesting ethnopharmacological, antioxidant, and phytochemical data on some medicinal plants used in the traditional treatment of male infertility in Benin. Unfortunately, very little data exist on the long-repeated dose toxicity of these medicinal plants. This study was aimed at evaluating the larval cytotoxicity and subacute toxicity of the hydroethanolic extract of Cassytha filiformis whole plant, Gardenia ternifolia roots, and Rourea coccinea leaves. The subacute toxicity of these plants was evaluated in male Wistar albino rats at three different doses (200, 400, and 800 mg/kg) according to the OECD 407 guidelines. Hematological and biochemical examinations and the histological study of the liver and kidneys were carried out. Larval cytotoxicity was assessed by the sensitivity of Artemia salina larvae to different concentrations of the studied plants extracts. The mean lethal concentration (LC50) was determined by the probit method. Subacute toxicity data indicated that there was no mortality or structural alterations of the liver and kidneys in the lot of treated animals. However, significant alterations in certain hematological and biochemical parameters (hematocrit, ASAT, and uremia) were noted. These abnormalities were observed in the lot of rats treated with Rourea coccinea and Cassytha filiformis extracts. Larval cytotoxicity data indicate that the studied plants extracts are not cytotoxic (LC50 > 0.1 mg/mL). These data suggest that the use in traditional medicine of studied plants at high doses and repeated over a long period of time requires special attention.

Benin has attractive ethnobotanical potential with a vast diversity of medicinal plants widely used to treat human diseases. Urinary tract infections are among the diseases traditionally treated by medicinal plants. Mangifera indica, Bridelia ferruginea, Alstonia boonei, Morodora myristica, Xylopia aethiopica and Zanthoxylum zantoxyloides are six plants used in the traditional treatment of urinary infections in Benin. The general objective of this study was to identify the ethnopharmacological uses of these six plants used in traditional medicine in South Benin. To this end, an ethnopharmacological survey was conducted using the semi-structured interview method among herbalists in the markets of South Benin. The ethnobotanical data collected were analyzed using the use-value, the informant consensus factor and the medicinal plant fidelity index. A total of 98 herbalists participated in this study. The six plants studied were involved in 15 different diseases divided into seven disease categories. The most mentioned disease categories are infectious diseases, blood and digestive diseases. Malaria, ulcers, anemia and urinary tract infections are the pathologies most commonly treated by these plants. Informants agreed on the use of these plants in these disease categories. Bark, leafy stems and roots are the parts of the plants most used to treat diseases. Decoction and maceration are the two main methods of preparation, and the oral and cutaneous routes are the main routes of administration. These data constitute ethnopharmacological documentation that can be used for further pharmacological and toxicological studies.

Ethnobotanical relevance: Many plants are widely used in traditional medicine across Africa. In Benin, practitioners of Beninese traditional medicine make use of diverse medicinal plants in the traditional management of various diseases including diarrhoea. Aim of the study: This study aimed at highlighting the ethnomedicinal uses of 17 plants in the traditional treatment of diarrhoea and other diseases in southern Benin. Methods: An ethnomedicinal survey was carried out using the semi-structured interview method among practitioners of traditional medicine in Benin. This allowed for the identification of the traditional uses of these plants. The ethnobotanical data collected was analyzed using indices such as Use Value, Informant Consensus Factor and Fidelity Index of medicinal plants. A total of 72 informants participated in this study, including 52 market herbalists and 20 traditional healers. Results: The cited plants were involved in the treatment of 39 diseases and symptoms of diseases which have been divided into 15 categories. The most frequently mentioned disease categories were infectious-, blood and digestive diseases,offering treatement for malaria, diarrhoea and fever, amongst others. These plants have maximum potential for the treatment of infectious diseases, as well as metabolic, respiratory, skin, blood, digestive and circulatory diseases. Conclusion: This study revealed that interviewed informants (market herbalists and traditional healers) had good knowledge of the treatment of several diseases using the 17 plants . . It confirmed that the 17 selected plants are used in the traditional treatment of diarrhoea as well as other diseases. This study provided a database for Future pharmacological investigations on the basis of this ethnobotanical documentation.