Remember that blood pressure medicine needs to be taken consistently. When the supply runs low, get a refill before it runs out. It is recommended to buy the medicine from the same pharmacy or clinic every time. This is so that the pharmacist or nurse is familiar with the kind of medicine you are taking. Once you complete a refill, put a mark on the calendar date for your next refill. When you have to take a trip, make sure you have enough medicine with you and keep it in your purse, not your suitcase, all the time.