How ml should an adult weighting 250 lb take of guaiatussin ac syrup?

For adults, the typical dosage of guaifenesin (often found in products like Guaitussin) is usually 200 to 400 mg every 4 to 6 hours as needed, but it’s important to refer to the specific product's label for dosing instructions. Generally, the liquid form is dosed in milliliters (ml), so ensure to measure based on the concentration of the syrup. For someone weighing 250 lb, the standard dosage would still apply, unless directed otherwise by a healthcare provider. Always consult a doctor or pharmacist if unsure about dosage.