Generic Name: Prazosin

  • What is Minipress?

    Minipress is used to treat high blood pressure. Minipress can be taken alone or along with other blood pressure-lowering medications.

  • What is the most important information I should know about Minipress?

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

    Minipress may cause fainting and/or rapid heart rate with a sudden loss of consciousness. This risk increases if you are also taking other medications for high blood pressure. Commonly, dizziness, drowsiness, or fainting can occur after taking the first dose, especially when rising from a lying or sitting position. Try not to drive or perform potentially hazardous activities for the first 24 hours after taking Minipress.

  • Who should not take Minipress?

    You should not take Minipress if you are allergic or sensitive to it or any of its ingredients. You should also not take Minipress if you are allergic to a type of medication known as a quinazoline.

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

    Tell your doctor about all prescription, over-the-counter, and herbal medications you are taking before beginning treatment with Minipress. Also, talk to your doctor about your complete medical history, especially if you are taking other medications used to treat high blood pressure, or if you are planning to undergo cataract surgery.

  • 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.

    Adults: The usual starting dose is 1 milligram (mg) taken two or three times daily. Your doctor may slowly increase your individual dose up to 20 mg, taken in divided doses, based on your condition.

  • How should I take Minipress?

    Take Minipress exactly as directed by your doctor.

  • What should I avoid while taking Minipress?

    Avoid excessive exposure to hot environments, standing for prolonged periods of time, becoming dehydrated, and drinking alcohol to prevent your blood pressure from dropping too much. Also, avoid getting up too fast from a sitting or lying position.

    Avoid driving or performing hazardous tasks for 24 hours after taking your first dose of Minipress, or if there was a recent increase in your dose.

  • What are possible food and drug interactions associated with Minipress?

    If Minipress is taken with certain other drugs, the effects of either could be increased, decreased, or altered. It is especially important to check with your doctor before combining Minipress with the following: diuretics ("water pills"), other medications used to treat high blood pressure, or erectile dysfunction drugs known as phosphodiesterase-5 (PDE-5) inhibitors.

  • What are the possible side effects of Minipress?

    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, headache, irregular heartbeat, lack of energy, nausea, vomiting, weakness

  • Can I receive Minipress if I am pregnant or breastfeeding?

    The effects of Minipress during pregnancy are unknown. Tell your doctor immediately if you are pregnant, plan to become pregnant, or are breastfeeding. Minipress is excreted in breast milk, so you should talk to your doctor about taking this medication if you are breastfeeding.

  • What should I do if I miss a dose of Minipress?

    If you miss a dose of Minipress, take the missed dose as soon as you remember it. However, if it is almost time for your next dose, skip the one you missed and return to your regular dosing schedule. Do not take two doses at once. If you are unsure, ask your doctor or pharmacist for advice.

  • How should I store Minipress?

    Store at room temperature away from light.

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