Each "Betac" 20 mg tablet contains 20 mg betaxolol as betaxolol hydrochloride.
Excipients/Inactive Ingredients: "Betac" 20 mg tablets also contain: lactose, microcrystalline cellulose, sodium starch glycolate, colloidal anhydrous silica, magnesium stearate, polyvinyl alcohol, titanium oxide (E 171), talc, lecithin and xanthan gum.