Cardura

Generic name: Doxazosin mesylate

What is Cardura?

Cardura is used to treat the symptoms associated with an enlarged prostate gland (benign prostatic hypertrophy). Cardura is also used to treat high blood pressure.

What is the most important information I should know about Cardura?

If you have high blood pressure, you must take Cardura regularly for it to be effective. Since blood pressure declines gradually, it may be several weeks before you get the full benefit of Cardura. You must continue taking Cardura even if you are feeling well. Cardura does not cure blood pressure; it only keeps it under control.

Cardura can cause a sudden drop in blood pressure after the very first dose. You may feel dizzy, faint, or lightheaded, especially after you stand up from a lying or sitting position. This is more likely to occur after you've taken the first few doses or if you increase your dose, but can occur at any time while you are taking the drug. It can also occur if you stop taking the drug and then restart treatment. If you feel very dizzy, faint, or lightheaded, you should contact your doctor.

Who should not take Cardura?

Do not use Cardura if you are sensitive to or have ever had an allergic reaction to it or to drugs such as prazosin or terazosin.

What should I tell my doctor before I take the first dose of Cardura?

Tell your doctor about all prescription, over-the-counter, and herbal medications you are taking before beginning treatment with Cardura. Also, talk to your doctor about your complete medical history, especially if you have liver disease or are taking drugs that affect liver function. Prostate cancer may cause the same symptoms as an enlarged prostate gland. Prostate cancer should be ruled out before you start taking this medication.

What is the usual dosage?

The information below is based on the dosage guidelines your doctor uses. Depending on your condition and medical history, your doctor may prescribe a different regimen. Do not change the dosage or stop taking your medication without your doctor's approval.

Your Cardura dosage must be individualized.

Enlarged Prostate Gland

Adults: The starting dose of Cardura is 1 milligram (mg) daily. Depending on your response, dosage may be increased to 2 mg and then, if needed, to 4 mg or 8 mg. The maximum recommended dose is 8 mg daily.

High Blood Pressure

Adults: The initial dose is 1 mg daily. Depending on your response, dosage may be increased to 2 mg and then, if needed, to 4 mg, 8 mg, and 16 mg daily.

How should I take Cardura?

This medication can be taken with or without food. Cardura should be taken exactly as prescribed, even if you have no symptoms. Take this medication regularly otherwise your condition may worsen.

What should I avoid while taking Cardura?

Cardura can cause low blood pressure. You should avoid driving or any hazardous tasks for 24 hours after taking the first dose, after your dose has been increased, or if you stopped taking Cardura and then restarted the medication.

Cardura can cause drowsiness. Avoid participating in any activity that requires full mental alertness.

What are possible food and drug interactions associated with Cardura?

If Cardura is taken with certain other drugs, the effects of either could be increased, decreased, or altered. Always check with your doctor before combining Cardura with any other drugs, herbs, or supplements.

What are the possible side effects of Cardura?

Side effects cannot be anticipated. If any develop or change in intensity, tell your doctor as soon as possible. Only your doctor can determine if it is safe for you to continue taking this drug.

Side effects may include: dizziness, drowsiness, fatigue, headache

Side effects may increase as the dose increases.

Rarely, Cardura can cause a painful, long-lasting erection that lasts for hours. This condition can lead to impotence. Contact your doctor right away if you experience this.

Can I receive Cardura if I am pregnant or breastfeeding?

The effects of Cardura during pregnancy and breastfeeding are unknown. Talk with your doctor before taking this drug if you are pregnant or plan to become pregnant. Avoid breastfeeding if you are taking Cardura.

What should I do if I miss a dose of Cardura?

Take it as soon as you remember. If it is almost time for your next dose, skip the dose you missed and go back to your regular schedule. Never take 2 doses at the same time.

How should I store Cardura?

Store Cardura at room temperature.