aleve tablets are NSAIDs so, it wont be of much problem, nausea side effect has u have taken this soon after the prevalite powder but nothing to worry take rest for some time. hope you are taking the powder mixed with 30 mL to 180 mL of water or other fluids (milk, fruit juice). Other medications should be taken at least 1 hour before or 4 to 6 hours after cholestyramine resin (prevalite powder) Cholestyramine should never be taken in its dry form. The recommended adult dose of cholestyramine resin is 4 g (1 packet) 1 to 6 times daily depending on circumstances. The powder must be mixed with 2 to 6 ounces (30 mL to 180 mL) water or other fluids (milk, fruit juice, or other non-carbonated beverage). It may also be mixed with highly fluid soups or pulpy fruits with high moisture content such as applesauce or crushed pineapple. Other medications should be taken at least 1 hour before or 4 to 6 hours after cholestyramine resin. Cholestyramine should never be taken in its dry form.