enIn vitro-antimicrobial effects of ethanolic extracts of Solanum xanthocarpum against some urinary and gastrointestinal tract infection causing Gram negative bacteriaResearch ArticleThe ethanolic extracts of the whole sherb of Solanum xanthocarpum (Solanaceae) Schard & Wendl. against five Gram negative pathogenic bacterial species viz Proteus mirabilis, Pseudomonas auregenosa, Shigella sonnei, Shigella boydii, and Salmonella typhimurium were used. Plant extracts of S. xanthocarpum were prepared in 95% ethanol. The susceptibility of the microorganisms to the extracts of this plant at different doses (25, 50 and 100 mg/ml) was compared with selected antibiotics (100μg/ml) ofAntimicrobial; Gram negative, Solanum xanthocarpum, ethanolic extract, bactericidal, zone of inhibition.2433 Asifaasif321@gmail.comPhdDepartment of Pharmacy, GRD (P.G)IM T, Rajpur, Dehradun 248009 (U.K). IndianoAmarjeet.Kaurabc@gmail.comPhdDepartment of Pharmacy, GRD (P.G)IM T, Rajpur, Dehradun 248009 (U.K). Indiano