கருந்துளசி Botanical name: Ocimum Tenuiflorum Common name – Purple stalked basil Tamil name – KARUNTULASI (கருந்துளசி) ’black tulsi’ Nativity – India Increases longevity ;Promotes flow of mother's milk ;Known for antibacterial, antidepressant , Antioxidant and antiviral activities; Promotes blood circulation ; Lowers blood sugar level; Prevents gastric ulcers. S.Soundarapandian (int:Talkpagelinktext) 15:48, 7 February 2015 (UTC)PD-self