The Compendium of Caraka 1.27.91

1.27.91

grāhi śastaṃ viśeṣeṇa grahaṇyarśovikāriṇām/
kālaśākaṃ tu kaṭukaṃ dīpanaṃ garaśophajit//

astringent, and praised especially for those afflicted with chronic bowel disorders and hemorrhoids. / Kālaśāka is pungent, digestive-stimulant, and overcomes slow poisons and swelling;