I am dropping off my prescription to get it filled .   You can come back in twenty minutes , and it will be ready .   If I couldn ’ t wait , could the prescription be mailed to me ?   Yes , you can have it delivered or filled at any location in our HMO .   When should I take this medication ?   You need to take it at bedtime .   Should I take this medicine on an empty stomach ?   Don ’ t mix alcohol with this medication , but you can take it with or without food .   What are the side effects of this medication ?   You might feel a little dizzy at first , but it should pass . 