Bioavailability of cobalt and anthelmintic effects of albendazole fortified with cobalt (Vermitan super) in sheep: In: The Proceedings of the 7th Biennial Scientific Conference, held at the Department of Public Health, Pharmacology and Toxicology Auditorium, Upper Kabete Campus.

Development of ethnomedicines for management of malaria in Msambweni district, Kenya: In: The Proceedings of a Workshop on Regional Networks in Africa, at the Kopanong Hotel and Conference Centre in Benoni, South Africa, near Johannesburg.

Biological screening of Kenyan antimalarial plant extracts in brine shrimp bioassay. In: The first international congress on Human-Animal Interface (ICOPHAI): Impact, Limitations and Needs in Developing Countries in the United Nations Conference Centre, Addis Ababa, Ethiopia, sponsored by USDA/APHIS in collaboration with Ohio State University.

Plants as source of drugs: Ethnopharmacology, Pharmacology and Toxicology of selected antimalarial herbal plants from Msambweni district, South coast Kenya. In: The Proceedings of a RISE AFNNET workshop-University of Nairobi Node in Chak Guest House, Nairobi

13TH International Symposium on Natural Product Chemistry and Related Biological Sciences, International Centre for Chemical and Biological Sciences (ICCBS), University of Karachi, Pakistan