Green Xanax Bars are green rectangular-shaped pre-scored pills containing alprazolam in the strength of 2mg. It comes in the size of 15.00mm, having the imprint "S 90 3" on the scored side. Inactive ingredients of green Xanax bars include corn starch, lactose, crospovidone, microcrystalline cellulose, silicon dioxide, magnesium stearate, sodium benzoate, docusate sodium, and color additives FD & C Blue No. 2 and D & C Yellow No. 10.