Microzide should not be used with Cisapride or Dofetilide, because very serious interactions may occur. A doctor should be made aware of any and all drugs the patient is taking, but especially of Cholestyramine, Colestipol, Corticosteroids, Diazoxide, Digoxin, Lithium, and common nonsteroidal anti-inflammatory drugs such as Ibuprofen. One should check the labels of all medicines to see if they contain ingredients that may raise blood pressure. This product may also affect the results of some lab tests. Microzide should be taken by mouth with or without food, and it is best to take this medication early in the day in order to prevent frequently night trips to the bathroom. This medication should not be stopped or started without a local doctor's consent. If an overdose is suspected, a poison control center should be contacted immediately. Signs of overdose include severe and lasting weakness, fainting, decrease in amount of urine being produced, and slow breathing, or shallow breathing. These are all factors that must be considered, before a patient attempts to buy Microzide online.