Doxazosin

ADULTS

Your doctor will adjust the dosage to fit your needs. 

The usual starting dose is 1 milligram taken once a day. To minimize the potential for dizziness or fainting associated with
Doxazosin, which may occur between 2 and 6 hours after a dose, your doctor may monitor your blood pressure during this period and afterwards. The first dose is sometimes taken at bedtime to minimize this effect. However, be especially careful if you need to get up during the night. These effects may also occur with any doses you take after the first dose. Getting up slowly may help lessen this problem. If you feel dizzy, lie down so that you do not faint. Then sit for a few moments before standing to prevent the dizziness from returning.

After the effects of the starting dose are measured, your doctor may increase the daily dose to 2 milligrams and then, if necessary, to 4 milligrams, 8 milligrams, or, in people with high blood pressure only, up to 16 milligrams. As the dose increases, the potential for side effects such as dizziness, vertigo, light-headedness, and fainting also increases.

If you miss a dose of this medicine, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not double doses. 

If you miss several doses, call your doctor to see at what dose you should start again.

CHILDREN

The safety and effectiveness of this drug in children have not been established.

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