In deciding to use a medicine, the risks of taking the medicine must be weighed against the good it will do. This is a decision you and your doctor will make. For this medicine, the following should be considered:
Tell your doctor if you have ever had any unusual or allergic reaction to this medicine or any other medicines. Also tell your health care professional if you have any other types of allergies, such as to foods, dyes, preservatives, or animals. For non-prescription products, read the label or package ingredients carefully.
Although there is no specific information about the use of this medicine in children, it is not expected to cause different side effects or problems in children than it does in adults. However, extra caution may be necessary in infants with jaundice, because these medicines can make the condition worse.
Dizziness, lightheadedness, or fainting or symptoms of too much potassium loss may be more likely to occur in the elderly, who are more sensitive to the effects of prazosin and polythiazide. In addition, this medicine may reduce tolerance to cold temperatures in elderly patients.
|All Trimesters||C||Animal studies have shown an adverse effect and there are no adequate studies in pregnant women OR no animal studies have been conducted and there are no adequate studies in pregnant women.|
There are no adequate studies in women for determining infant risk when using this medication during breastfeeding. Weigh the potential benefits against the potential risks before taking this medication while breastfeeding.
Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. When you are taking this medicine, it is especially important that your healthcare professional know if you are taking any of the medicines listed below. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive.
Using this medicine with any of the following medicines is usually not recommended, but may be required in some cases. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.
- Arsenic Trioxide
Using this medicine with any of the following medicines may cause an increased risk of certain side effects, but using both drugs may be the best treatment for you. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.
- Enalapril Maleate
- Ibuprofen Lysine
- Magnesium Salicylate
- Mefenamic Acid
- Salicylic Acid
Certain medicines should not be used at or around the time of eating food or eating certain types of food since interactions may occur. Using alcohol or tobacco with certain medicines may also cause interactions to occur. Discuss with your healthcare professional the use of your medicine with food, alcohol, or tobacco.
Other Medical Problems
The presence of other medical problems may affect the use of this medicine. Make sure you tell your doctor if you have any other medical problems, especially:
- Angina (chest pain) or
- Heart disease (severe)—Prazosin may make these conditions worse
- Type 2 diabetes mellitus—Polythiazide may increase the amount of sugar in the blood
- Gout (history of) or
- Lupus erythematosus (history of) or
- Pancreatitis (inflammation of the pancreas)—Thiazide diuretics may make these conditions worse
- Kidney disease—Effects of this combination medicine may be increased because of increased sensitivity to the effects of prazosin and slower removal of polythiazide from the body. If kidney disease is severe, polythiazide may not work
- Liver disease—If polythiazide causes loss of too much water from the body, liver disease can become much worse