The main objective of this study was to determine the anthelmintic efficacy of powderized betel nut as a natural dewormer against roundworm eggs. In order to calculate the efficacy, it specifically aimed to identify the following parameters: pre-treatment frequency count of eggs; post-treatment frequency count of eggs; and average percent reduction of eggs. The study was conducted at Hacienda Gabon, Abucay, Bataan from June to July, which lasted for 46 days. A total of 80-undewormed Black Australorp chickens aging 4-months old naturally infested by roundworms (Ascardia galli) were used in a single-factor study which was arranged in a Completely Randomized Design (CRD). The treatments given were T1levamisole hydrochloride and albendazole, T21g powderized betel nut/kg BW of chicken, T32g powderized betel nut/kg BW of chicken, and T43g powderized betel nut/kg BW of chicken. Birds were randomly allocated to their corresponding pens, whereas each treatment was replicated four times. Fecal collection and examination were done in accordance with post-treatment days wherein the efficacy of dewormers was observed. Based upon the results of this study, it was found that in pre-treatment frequency egg count, chickens assigned to Treatment 1 had the highest egg count among all other treatments. However, in terms of post-treatment frequency egg count, all treatments showed fewer eggs during the 12% day, which resulted in being the most effective post-treatment day im expelling roundworm eggs. Statistical analysis revealed that the presence of roundworm eggs in pre-treatment and post-treatment was insignificant in terms of frequency of egg count and average percent reduction. The anthelmintic efficacy of levamisole hydrochlonde and albendazole was comparable to 1 g and 3 g of powderized betel nut. In addition, it could be an alternative dewormer in reducing roundworm eggs. It concluded and proved that powderized betel nut given in 3g/BW of chicken has the ability to reduce roundworm (Ascaridia galli) eggs in Black Australorp by having the most effective dose and comparable effects to levamisole hydrochloride and albendazole. In short, Processed ethnobotanicals were comparable to commercial anthelmintic.