Abstract
Aim: To study the phytochemical, proximate, antimicrobial and anti-malarial activities of leaf extracts of Justicia carnea
 Methods: The leaf sample of Justicia carnea which has been used in Nigeria folklore in treating malaria, cancer and many other diseases was extracted with methanol, ethyl acetate and n-hexane. The extracts were subjected to qualitative and quantitative phytochemical screening, proximate, anti-malarial and antimicrobial screening.
 Results: The results showed that alkaloids, flavonoids, glycosides, phenolic compounds were present. Ethy acetate extract also exhibited the highest suppression against malaria parasite in-vitro, more than chloroquine. This inhibition and high abundance of alkaloids and glycosides gave credence to the therapeutic use of the plant as anti-malaria drug. The three extracts showed a concentration-dependent inhibition against S. aureus, Aspergillus spp and Bacillus spp. S. typhi, K. pneumonia, P. aerogenosa and C. albicans were resistant in all concentrations of the extracts.
 Conclusion: The therapeutic use of the leaves of J. carnea in treatment of malaria was validated. Its antimicrobial activity was also affirmed in some of the tested organisms.
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