SN instructed patient / caregiver to help with hypotension to drinking plenty of fluids, such as water or sports drinks that contain nutrients like sodium and potassium. Drinking little or no alcohol. Standing up slowly. Not crossing your legs while sitting. Slowly increasing the amount of time you sit up if you've been immobile for a long time because of a medical condition. The term "immobile" refers to not being able to move around very much. Eating small, low - carbohydrate meals if you have postprandial hypotension a form of orthostatic hypotension.