What should I tell my care team before I take this medication?
They need to know if you have any of the following conditions:
-Kidney disease
-An unusual or allergic reaction to prazosin, other medications, foods, dyes, or preservatives
-Pregnant or trying to get pregnant
-Breast-feeding
What may interact with this medication?
This medication may interact with the following:
-Diuretics
-Medications for high blood pressure
-Sildenafil
-Tadalafil
-Vardenafil
This list may not describe all possible interactions. Give your health care provider a list of all the medicines, herbs, non-prescription drugs, or dietary supplements you use. Also tell them if you smoke, drink alcohol, or use illegal drugs. Some items may interact with your medicine.
What should I watch for while using this medication?
Visit your care team for regular checks on your progress. Check your blood pressure regularly. Ask your care team what your blood pressure should be and when you should contact them.
Drowsiness and dizziness are more likely to occur after the first dose, after an increase in dose, or during hot weather or exercise. These effects can decrease once your body adjusts to this medication. Do not drive, use machinery, or do anything that needs mental alertness until you know how this medication affects you. Do not stand or sit up quickly, especially if you are an older patient. This reduces the risk of dizzy or fainting spells. Alcohol can make you more drowsy and dizzy. Avoid alcoholic drinks.
Do not treat yourself for coughs, colds or allergies without asking your care team for advice. Some ingredients can increase your blood pressure.
Your mouth may get dry. Chewing sugarless gum or sucking hard candy, and drinking plenty of water may help. Contact your care team if the problem does not go away or is severe.
For males, contact your care team right away if you have an erection that lasts longer than 4 hours or if it becomes painful. This may be a sign of a serious problem and must be treated right away to prevent permanent damage.