Home > Manufacturers > Optimum_Nutrition > Stevia Powder 250g, 250 grams Stevia Powder 250g, 250 grams Stevia Powder 250g, 250 grams OP-237 Your Price: $5.16 Regular: $9.39 You Save: $4.23 Quantity: Description: Optimum Nutrition Stevia Powder 250g, 250 grams Optimum Nutrition's Stevia Powder is made with pure White Stevia Extract that has been standardized to 90% Steviosides. Steviosides are generally considered to be the active compounds in Stevia leaves.