You can take Pepto Bismol every 30 to 60 minutes as needed, but you should not take more than 8 doses in a 24-hour period. One dose is generally 30 ml of the liquid or 2 chewable tablets. You should not take Pepto Bismol for more than 2 days, and if symptoms persist or worsen after 2 days, consult your doctor. It's important to follow the dosage instructions on the package and avoid exceeding the recommended amount to reduce the risk of side effects. If you experience severe symptoms or take more than the recommended dose, seek medical advice promptly.