Vistra Gotu Kola Extract plus Zinc (30 Tablets) + Vistra Zinc 15mg (45 Tablets) Set (2 Bottles) VISTRA Gotu Kola Extract plus Zinc (30 Tablets) Directions for Use: Take 1-2 capsules per day after meals. FDA Reg. No.: 13-1-00449-1-0147 VISTRA Zinc 15mg (45 Tablets) Directions for Use: Take 1 tablet, 1-2 times a day after meals (morning/evening). FDA Reg. No.: 13-1-00449-1-0142