Case in point:
Ingredients in Advil (leading ibuprofen in America): Each brown, sugar-coated tablet/caplet contains ibuprofen 200 mg. Nonmedicinal ingredients: acetylated monoglyceride, beeswax, carnauba wax, corn starch, croscarmellose sodium, ethoxyethanol, iron oxides, lecithin, microcrystalline cellulose, parabens, pharmaceutical glaze, pharmaceutical shellac, povidone, pregelatinized starch, silicon dioxide, simethicone, sodium benzoate, sodium lauryl sulfate, stearic acid, sucrose and titanium dioxide.
Ingredients in my store brand Ibuprofen with the same 200mg of ibuprofren:
Ingredients: Active Ingredient (in each Brown Tablet): Ibuprofen USP (200 mg). Inactive Ingredients: Carnauba Wax, Cellulose, Corn Starch, Fumed Silica Gel, Hypromellose, Lactose, Magnesium Stearate, Polydextrose, Polyethylene Glycol, Red Iron Oxide, Sodium Starch Glycolate, Stearic Acid, Titanium Dioxide.