D airy farmers introduce highly productive animals (exotic breeds), but the environmental condition of the area (Pakistan) cannot allow them to attain their peak production that limit the farmers dream on their feasibility report (Rashid et al., 2018). Intestinal parasites are the major constraints for economic losses in productive animals at dairy farms. They cause anorexia, anemia, retarded growth, weight loss, delayed sexual maturity, low productivity (milk and meat) and increased susceptibility of animals to other infections (Yadav et al., 2004). Gastrointestinal parasitic problem is the worldwide (Regassa et al., 2006). Ruminants gastrointestinal nematodes of cattle includes, Trichuris, Haemonchus, Oesophagostomum, Bunostomum, Ostertagia, Trichostrongylus, Cooperia, Capillaria (Hosking et al., 2008). The reported prevalence of helminths in Pakistan ranges from 33.68-51% (Khan et al., 2010). The use of broad spectrum anthelmintic of benzimidazole (albendazole) group was evaluated its effect on milk production, body condition score and eggs per gram (EPG). Reported albendazole efficacy against Ostertagiaostertagi, adult, DL4 and EL4 is 99.00, 95.50 and 84.90%, respectively. The current study was performed on a Holstein Friesian cattle with the history of decrease production, diarrhea and weight loss with anorexia. The studied animal was purchased from local market. Fecal samples from normal and infected animals were taken for the diagnosis of anthelmintic, its efficacy and effect on milk production and body condition score for a period of one month. The normal animal was dewormed with albendazole one month